-
B0400FDREV DI/A Series
FOUNDATION fieldbus H1 CommunicationInterface Modules
(FBM220/FBM221)
Users Guide
October 5, 2004
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Invensys, Foxboro, FoxCAE, FoxDraw, FoxView, and I/A Series are
trademarks of Invensys plc, its subsidiaries, and
affiliates.FOUNDATION is a trademark of The Fieldbus
Foundation.NI-FBUS is a registered trademark of National
Instruments Corporation.Relcom is a trademark of Relcom
Technologies Limited.Windows NT is a registered trademark of
Microsoft Corporation.UNIX is a trademark of the X-Open
Company.Solaris is a trademark of Sun Microsystems, Inc.All other
brand names may be trademarks of their respective owners.
Copyright 2001-2004 Invensys Systems, Inc.All rights
reserved
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Contents
Figures...................................................................................................................................
vii
Tables.....................................................................................................................................
ix
Preface....................................................................................................................................
xi
Who This Book Is For
.............................................................................................................
xi
What You Should Know
..........................................................................................................
xi
Revision Information
...............................................................................................................
xi
Reference Documents
..............................................................................................................
xiI/A Series Documents
..........................................................................................................
xi FOUNDATION Fieldbus Documents
.............................................................................
xii
1. Introduction
......................................................................................................................
1
Glossary of Terms
.....................................................................................................................
2
2. Quick-Start Example
.........................................................................................................
5
3. Product Application
........................................................................................................
13
Functional and Environmental Constraints
.............................................................................
13
Field Device Configuration Requirements
..............................................................................
13
Topologies
..............................................................................................................................
14Bus Length Calculations
.....................................................................................................
14Bus Power Supply
..............................................................................................................
15Bus Power Calculations
......................................................................................................
15Intrinsic Safety Considerations
...........................................................................................
15
Control Loop Execution Time
................................................................................................
16
4. Installation
......................................................................................................................
17
FOUNDATION Fieldbus Cable Connections
.......................................................................
18
Power Connections
.................................................................................................................
20
5. Configuration
Information..............................................................................................
23
H1 Field Device Parameters
....................................................................................................
23H1 Transmitter LAS/LM Disabling Procedure
...................................................................
27
Block Interconnections
...........................................................................................................
28
Configuration Procedures
.......................................................................................................
31
Block Processing
.....................................................................................................................
32iii
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B0400FD Rev D Contents DCI Block Functions
..............................................................................................................
33Periodic/Change-Driven Execution
....................................................................................
33Auto/Manual Mode Operation
..........................................................................................
33Simulation Mode
...............................................................................................................
33Time Stamping
..................................................................................................................
33Signal Conditioning and Linear Scaling
.............................................................................
33Input Limiting
...................................................................................................................
33Confirmed Outputs
............................................................................................................
34Output Clamping
..............................................................................................................
34Output Initialization
..........................................................................................................
34Cascade Initialization
.........................................................................................................
34Fail-Safe Actions
.................................................................................................................
35Heartbeat Message Handling
..............................................................................................
36
Control Schemes Using DCI Blocks
.......................................................................................
37
DCI Block Parameter Mapping
..............................................................................................
40
Function Block Parameter Status Mapping
.............................................................................
40DCI Block Status (BLKSTA)
.............................................................................................
40DCI Parameter Status
........................................................................................................
41
6. Process Operator Displays
...............................................................................................
43
Block Detail Displays
..............................................................................................................
43ECB200 Block Detail Display
............................................................................................
44
ECB200 Faceplate
.........................................................................................................
45ECB200 Primary Data
..................................................................................................
45
ECB201 Block Detail Display
.................................................................................................
46ECB201 Faceplate
.........................................................................................................
47ECB201 Primary Data
..................................................................................................
47
7.
Maintenance....................................................................................................................
49
System Management Displays
.................................................................................................
49FBM220/221 Equipment Information Display
..................................................................
49FBM220/221 Equipment Change Display
.........................................................................
49H1 Field Device Equipment Information Display
.............................................................. 49H1
Field Device Equipment Change Display
.....................................................................
51
LED Indicators
.......................................................................................................................
51
Appendix A. Control Loop Performance
.............................................................................
55
Macrocycle Architecture
..........................................................................................................
55
Macrocycle Schedule Algorithm
..............................................................................................
57
BPC/Macrocycle Phasing
........................................................................................................
57
Typical Control Loop Timing
.................................................................................................
58
Maximum Performance Control Loops
...................................................................................
59
Macrocycle Period
...................................................................................................................
59iv
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Contents B0400FD Rev D Index
....................................................................................................................................
61v
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B0400FD Rev D Contents vi
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Figures
1-1. FBM220/221 and Associated Foundation Fieldbus Elements
........................................ 12-1. Typical Fieldbus
H1/Foxboro I/A Series Integration Process
......................................... 52-2. Typical Overview
ICC Display for a Control Processor 60
........................................... 82-3. Typical ECB200
(Parent) Editing Display
....................................................................
92-4. Typical ECB201 (Child) Editing Display
...................................................................
102-5. Typical DCI Block Editing Display
............................................................................
114-1. FBM220/221 and Termination Assembly Installation
................................................ 174-2. TA
Foundation Fieldbus Cable Connections
..............................................................
194-3. TA Component Locations (Covers Removed)
.............................................................
204-4. TA Foundation Fieldbus Power Connections
..............................................................
214-5. Installation of Ferrite Cores in Power Cables
...............................................................
225-1. ECB Hierarchy
...........................................................................................................
285-2. Block/DCI Block Functional Relationships
.................................................................
295-3. Typical User-Configured Block Interconnections
........................................................ 305-4.
Simple Cascade Configuration
....................................................................................
375-5. Supervisory Control Configuration
.............................................................................
385-6. Embedded MVC Control Configuration
....................................................................
396-1. ECB200 Block Detail Display
.....................................................................................
446-2. ECB201 Block Detail Display
.....................................................................................
467-1. Typical H1 Field Device Equipment Information Display (1 of
2) ............................. 507-2. Typical H1 Field Device
Equipment Information Display (2 of 2)
............................. 507-3. Typical H1 Field Device
Equipment Change Display
................................................. 517-4. FBM221 LED
Status Indicators
..................................................................................
53A-1. Link Timing Diagram
.................................................................................................
55A-2. BPC/Macrocycle Phasing
............................................................................................
57vii
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B0400FD Rev D Figures viii
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Tables
5-1. FBM220/221 Maximum Configuration Specifications
............................................... 235-2. Transducer
Block Parameters
......................................................................................
245-3. Resource Block Parameters
..........................................................................................
245-4. Analog Input (AI) Block Parameters
............................................................................
255-5. Analog Output (AO) Block Parameters
.......................................................................
255-6. Discrete Input (DI) Block Parameters
.........................................................................
265-7. Discrete Output (DO) Block Parameters
....................................................................
265-8. Key Parameters
............................................................................................................
315-9. DCI Block Parameter Mapping
..................................................................................
405-10. DCI Parameter Status Mapping
..................................................................................
405-11. DCI Parameter Status Mapping
..................................................................................
417-1. LED Status for FBM Operating Modes
......................................................................
527-2. LED Status for FBM Hardware Diagnostics Failure
.................................................... 52ix
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B0400FD Rev D Tables x
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Preface
This document describes the FOUNDATION fieldbus H1 Communication
Interface Module (FBM220 or FBM221). For detailed device
configuration information refer to FoxCAE V5.0 Supplement for
FOUNDATION fieldbus H1 Support (B0400DE).
Who This Book Is ForThis book is intended for the use of process
control engineers and operators, instrument and maintenance
engineers, and other qualified and authorized personnel involved in
setting up and configuring, and maintaining I/A Series equipment to
provide a FOUNDATION fieldbus H1 interface.
What You Should KnowPrior to using this book, you should be
generally familiar with the I/A Series system and with DIN Rail
Mounted FBM Subsystem Users Guide (B0400FA). Detailed information
for the various I/A Series software and hardware elements is found
in the reference documents listed below.
Revision InformationFor this release of the document the
following changes have been made:
Chapter 4 Installation
Revised Figure 4-1, Figure 4-4, and Figure 4-5 to reflect
correct ferrite core installa-tion. Also updated supporting text
for these figures.
Updated the part number for clamp-on ferrite cores from BF162YH
to BF162YG.
Appendix A Control Loop Performance
Section rewritten.
Reference DocumentsThe following documents provide additional
and related information.
I/A Series Documents FOUNDATION fieldbus H1 Communication
Interface Module (FBM220/221)
(PSS 21H-2Z20 B4)
FBM220/221 Termination Assembly FOUNDATION fieldbus
Communication(PSS 21H-2W5 B4)
DIN Rail Mounted FBM Subsystem Users Guide (B0400FA)
Control Processor 60 and Control Processor 60S Installation and
Maintenance (B0400FB)xi
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B0400FD Rev D Preface Control Processor 60 (CP60) Sizing
Guidelines and Spreadsheet (B0400BK)
Integrated Control Block Descriptions (B0193AX)
Integrated Control Software Concepts (B0193AW)
Integrated Control Configurator (B0193AV)
System Definition: A Step-by Step-Procedure (B0193WQ and
associated on-line Help)
Process Operations and Displays (B0193MM)
System Management Displays (B0193JC and associated on-line
Help)
System Equipment Installation (B0193AC)
Software Installation (Solaris Platform) (B0193JG)
Computer Aided Engineering for I/A Series Control Station
Databases, FoxCAE Version 4.0 (B0193MR)
FoxDraw (B0193WG)
FoxView (B0193WH)
Grouped Object Editor for Displays (B0193DV)
FoxCAE V5.0 Supplement for FOUNDATION fieldbus H1 Support
(B0400DE).
FOUNDATION Fieldbus Documents
NOTEThe two NI-FBUS documents listed below NI-FBUS Configurator
User Manual (Part No. 321423-01), and Getting Started with Your
AT-FBUS and NI-FBUS Software for Windows NT (Part No. 321014C-01)
are included with the NI-FBUS software package. Most of the other
FOUNDATION fieldbus documents listed can be obtained by contacting
the Fieldbus FOUNDATION organization at www.fieldbus.org.
FD-043, Technical Overview, FOUNDATION fieldbus
AG-140, Wiring and Installation, 31.25 kbits/s Voltage Mode Wire
Medium, Application Guide
321423B-01, NI-FBUS Configurator User Manual
321014C-01, Getting Started with Your AT-FBUS and NI-FBUS
Software for Windows NT
AG-163, 31.25 kbits/s Intrinsically Safe Systems, Application
Guide
FF-890, Function Block Application Process Part 1
FF-891, Function Block Application Process Part 2
IEC 1158-2: 1993, Fieldbus Standard for Use in Industrial
Control Systems Part 2: Physical Layer Specification and Service
Definition
ISA-S50.02-1992, Fieldbus Standard for Use in Industrial Control
Systems Part 2: Physical Layer Specification and Service
Definitionxii
-
Preface B0400FD Rev D dS50.02, Part 2 [Draft Standard] 1995,
Fieldbus Standard for Use in Industrial Control Systems Part 2:
Physical Layer Specification and Service Definition, Amendment to
Clause 22 (Formerly Clause 11 and Clause 24)
ISA-RP12.6, Wiring Practices for Hazardous (Classified)
Locations Instrumentation Part I: Intrinsic Safety, Recommended
Practice
FF-816, Fieldbus FOUNDATION Physical Layer Profile
Specification.xiii
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B0400FD Rev D Preface xiv
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1. Introduction
This chapter provides an overview of the FBM220 and FBM221, and
the network configuration in which they used.
The FOUNDATION fieldbus H1 Communication Interface Modules
(FBM220/FBM221) pro-vide channel isolated digital communications
to/from FOUNDATION fieldbus field devices over twisted-pair wires
at 31.25 Kbps. FBM220 supports one H1 communication segment
(channel) and FBM221 supports four.
The FOUNDATION fieldbus is an all digital, serial, two-way
communication system which inter-connects field devices, such as
transmitters and actuators, with host controllers. FBM220/221,
together with a Fieldbus Communications Module (FCM), provides a
communication interface between the I/A Series control station
(typically, a Control Processor 60) and the field devices in the
FOUNDATION fieldbus topology. Figure 1-1 shows the relationship
between the various equipment elements.
Figure 1-1. FBM220/221 and Associated FOUNDATION Fieldbus
Elements
The FBM220/221 mounts on a baseplate along with other DIN rail
mounted FBMs, and con-nects to its associated termination assembly
(TA) by means of a cable. As illustrated in Figure 1-1, FBM220/221
receives and processes signals to/from the FOUNDATION fieldbus via
the TA, and communicates with the I/A Series CP60 via the
FCM(s).
FBM220/221
2 Mbps Module Fieldbus
TerminationAssembly
Field Devices
TA
Terminator* Terminator
To Additional, Similar Equipment Groupings(if applicable)
FCM
FCM
10Base2 (10 Mbps)Ethernet Trunk Fieldbus(redundant)
I/A SeriesControl Station(Fault-Tolerant)
FOUNDATION Fieldbus(Typical Topology)
To Additional FBMs(if applicable)
(See Note)
NOTE: The Termination Assembly contains a dc-to-dcconverter and
a bus terminator. The bus terminator isused to terminate the
FOUNDATION fieldbus when theFBM220/221 is located at the end of the
bus segment.*A separate bus terminator (shown in dashed lines) is
used when the FBM220/221 is locatedmid point on the bus
segment.
From optionallyredundant dc
power sources
Up to 120 FBMs perI/A Series Control Station1
-
B0400FD Rev D 1. Introduction In addition to FOUNDATION fieldbus
wire connection points, the TA contains a dc-to-dc converter, and a
bus terminator for each channel (one for each H1 bus segment). The
dc-to-dc converter converts 24 V dc power from an external source
(a user-supplied power supply, or one of the existing rack-mounted
DIN rail subsystem power supplies) to isolated 30 V dc power
required by the FOUNDATION fieldbus field devices.
The bus terminator in the TA is used when the FBM220/221 is
located at the end point on the FOUNDATION fieldbus segment.
Switches located on the TA provide for terminator selection (in or
out) and local powering of the bus (on/off ) on a per channel (per
bus segment) basis.
FBM220/221 allows for the use of multi-vendor H1 (FOUNDATION
fieldbus certified) devices. Together with other elements of the
I/A Series system, FBM220/221 provides proven I/A Series control,
alarming, trending, and display capabilities.
Glossary of TermsThe following terminology relates directly to
the FBM220/221 and its associated equipment. For a glossary of
terms relating to FOUNDATION fieldbus installation, refer to
FOUNDATION fieldbus document AG-140, Wiring and Installation, 31.25
kbits/s Voltage Mode Wire Medium, Application Guide.
Baseplate The baseplate provides mounting for DIN rail mounted
FBMs and FCMs (see Figure 4-1 on page 17). Its eight mounting
positions can accommo-date up to eight FBMs, or a combination of
FBMs and FCMs. The base-plate also provides the necessary
connectors for dc power, the I/A Series Module Fieldbus, and
termination cables.
Control Station This is any I/A Series module that effects
process control via the I/A Series Ethernet trunk Fieldbus. An
example is the Control Processor 60 (CP60). The control station
controls process variables using algorithms contained in functional
control blocks configured by on-site process engineers to implement
the desired control strategies.
DCI Distributed Control Interface (DCI) control blocks BIN
(Binary Input), BOUT (Binary Output), RIN (Real Input), and ROUT
(Real Output) are I/A Series control blocks used to interface with
H1 FOUNDATION fieldbus field devices using digital
communications.
DIN Rail Mounted FBM Subsystem
The DIN rail mounted FBM subsystem provides a high-speed
communi-cation interface between the host control processor (for
example an I/A Series control station) and field I/O sensors and
actuators. DIN rail mounted devices, which include FBMs, FCMs and
supporting cables and connectors, mount on a baseplate which, in
turn, mounts on a DIN rail. The DIN rail mounted FBM subsystem is
described in detail in the DIN Rail Mounted FBM Subsystem Users
Guide (B0400FA).
ECB An Equipment Control Block, created for each FBM and
external field device, provides a holding place for the software
data associated with that FBM or external field device.2
-
1. Introduction B0400FD Rev D FBM Fieldbus Modules provide the
interface between process sensors/actuators and the Fieldbus in a
standard I/A Series system. FBM220/221 is one of many types of FBMs
offered as part of the I/A Series system.
FCM The Fieldbus Communications Module is an interface which
allows the FBM220/221 (and other I/A Series DIN rail mounted FBMs)
to commu-nicate with the control station via the I/A Series 10 Mbps
Ethernet trunk Fieldbus. It converts the 10 Mbps Ethernet signals
used by the control sta-tion to 2 Mbps signals used by the
FBM220/221, and vice versa.
Fieldbus With regard to the I/A Series system, this term applies
in general to two specific buses: the I/A Series 10 Mbps Ethernet
trunk Fieldbus and the I/A Series 2 Mbps Module Fieldbus. (Figure
1-1 shows how these buses are used in the I/A Series communication
network.) With regard to the FOUNDATION fieldbus, the term fieldbus
applies to the H1 FOUNDATION fieldbus used in conjunction with the
FBM220/221.
FoxCAE Computer-Aided Engineering software, part of the Foxboro
I/A Series sys-tem, is used to configure control strategies.
H1 This is a 31.25 Kbps wire media (Heap 1) as defined by Part 2
of IEC 61158 and ISA SP50.
LAS The Link Active Scheduler is a software functional unit
controlling com-munications in the Data Link Layer of the
FOUNDATION fieldbus imple-mentation of IEC 61158 and ISA SP50.
Letterbug This is an identifier for I/A Series control devices,
particularly for Fieldbus Modules (FBMs).
Macrocycle This is the repeating cycle of periodic and aperiodic
communications in the Data Link Layer of the FOUNDATION fieldbus
implementation of IEC 61158 and ISA SP50.
Parameter This is a named element in the data structure of a
function block, ECB, or I/A Series control block.
TA The Termination Assembly provides a means of attaching the
FBM220/221 to the H1 FOUNDATION fieldbus. As described previously,
the TA also provides the necessary power conversion for powering H1
field devices on the FOUNDATION fieldbus.3
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B0400FD Rev D 1. Introduction 4
-
2. Quick-Start Example
This chapter provides an example configuration, which provides
most of the information you need to get your I/A Series system and
FOUNDATION fieldbus subsystem up and running in the shortest
possible time.
Figure 2-1 outlines a typical integration sequence for
configuring combined I/A Series and FOUNDATION fieldbus equipment.
Following this figure is the procedure, whose steps are keyed to
the figure.
Figure 2-1. Typical Fieldbus H1/Foxboro I/A Series Integration
Process
NOTE1. This procedure assumes that you are familiar with I/A
Series system concepts, FOUNDATION fieldbus concepts.2. For more
comprehensive information on installing and configuring the
FBM220/221 and its associated FOUNDATION fieldbus equipment, refer
to the sub-sequent chapters of this document.
Start
Configure H1DevicesOff-line
1
InstallI/A Series
System andH1 Bus
2
4Create
and EditFBM220/221
ECB
Createand Edit
H1 DeviceECBs
6
EnableH1 Device
Communication
7
CreateDCI Blocks
for AllDevice Points
8
Attach H1Devices
to H1 Bus
3Verify H1
Device Dataon the Block
Detail Displays
9
End
5Place
FBM220/221On-Line5
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B0400FD Rev D 2. Quick-Start Example 1. Configure the H1 field
devices. Device configuration can be achieved in a number of
different ways. It is advised that devices be configured prior to
installation in the field to insure proper operation of the device.
Device database information may be stored within Foxboro FoxCAE
software to insure proper synchronization with the control
database. Online configuration via FoxCAE - I/A - FBM220/221 is
detailed in Fox-CAE V5.0 Supplement for FOUNDATION fieldbus H1
Support (B0400DE).
a. If using a personal computer interface, install the device
configurator interface card and associated software in the Windows
NT based personal computer per instructions provided with the
configurator. [NI-FBUS documents include NI-FBUS Configurator User
Manual (Part No. 321423-01), and Getting Started with Your AT-FBUS
and NI-FBUS Software for Windows NT (Part No. 321014C-01)].
b. Connect the FOUNDATION fieldbus network (H1 field devices) to
the personal computer containing the device configurator (refer to
the H1 device users manual for connection instructions). The
connections are typically made using a Relcom type termination
block.
c. At the Windows NT-based personal computer, and in accordance
with instruc-tions in the associated device configurator user
documents, perform the following operations:
Configure the device configurator. For the interface port
settings, change the listed parameters, if required. Default
parameters for the NI-FBUS configura-tor and FBM220/221 interface
are:
Configure the device configurator network communication
parameters by entering the following parameters:
Parameter NI-FBUS FBM220/221
T1 0x40000 0x75300
T2 0x40000 0x2BF200
T3 0x30000 0x15F900
SLOT_TIME 8
PER_DLPDUPHL_OVERHEAD 6
MAX_RESPONSE_DELAY 10
FIRST_UNPOLLED_NODE_ID 37
THIS_LINK 0
MIN_INTER_PSU_DELAY 16
NUM_CONSEC_UNPOLLED_NOD 186
PREAMBLE_EXTENSION 2
POST_TRANS_GAP_EXTENSION 1
MAX_INTER_CHAN_SIGNAL_SKE 0
TIME_SYNC_CLASS1
1. The FBM220/221 uses a TIME_SYNC_CLASS value of 5.
46
-
2. Quick-Start Example B0400FD Rev D Download the device
descriptor files (for example *.ffo and *.sym) for each device into
the device configurator. Place them in the appropriate
manufac-turers subdirectory in the personal computer.
Start the device configurator.
d. Referring to the device parameter configuration tables
presented under H1 Field Device Parameters on page 23, use the
device configurator to set the device block parameters, taking note
of the following:
Before setting the device block parameters, select a unique tag
(label)1 and device address for the device. The device address must
be higher (in order) than the FBM device address, and must be in
the range of 17 to 36 (decimal) (11 to 24 hexadecimal). Enter the
tag and address using the device configurator.
In addition to the settings listed under H1 Field Device
Parameters on page 23, for each block (resource, transducer, or
function block) enter a unique tag (using the device configurator)
to define the block.
The transducer block parameters are, for the most part, not
writable. How-ever, they must agree with the ranges selected for
the function blocks. If they are not in agreement, the values can
be modified by making changes in the function blocks.
For each transmitter in the H1 FOUNDATION Fieldbus subsystem,
you must ensure that the backup Link Active Scheduler (LAS) and
Link Master (LM) capabilities (if present) are disabled. For
specific instructions, refer to H1 Transmitter LAS/LM Disabling
Procedure on page 27.
e. When H1 field device configuration is complete, disconnect
the personal com-puter from the devices.
2. Install the I/A Series system and FOUNDATION fieldbus H1
bus.
a. Install the major elements of the I/A Series system equipment
as described in System Equipment Installation (B0193AC).
b. Install the FBM220/221, and its associated baseplate, FCM(s),
and TA as described in the DIN Rail Mounted FBM Subsystem Users
Guide (B0400FA), and under Installation on page 17 of this user
guide.
c. Perform the system definition by referring to the
Configuration Information section of DIN Rail Mounted FBM Subsystem
Users Guide (B0400FA).
d. Install the I/A Series software by referring to Software
Installation (B0193JG) or Software Installation (Windows NT)
(B0400JG).
e. Make the H1 bus connections to the TA as described under
FOUNDATION Fieldbus Cable Connections on page 18 of this document.
Also, make the power connections to the TA as described under Power
Connections on page 20.
3. Attach the H1 field devices to the H1 bus.
Refer to the user guides for the devices in question and make
the H1 bus connections to the field devices that were configured
off-line in Step 1.
1. For clarity, it is recommended that the device tag be the
same as the NAME parameter of the associ-ated ECB201.7
-
B0400FD Rev D 2. Quick-Start Example NOTEIt may be desirable at
this point to attach the NI-FBUS monitor to the H1 bus for
troubleshooting or monitoring functions.
4. Create and edit the FBM220/221 ECB (ECB200).
NOTEIn this procedure, I/A Series Integrated Control
Configurator (ICC) is used for con-trol configuration. As an
alternative, FoxCAE 4.0 can be used for this operation [refer to
Computer Aided Engineering for I/A Series Control Station
Databases, FoxCAE Version 4.0 (B0193MR)].
Access the ICC and proceed as follows. [Refer to Integrated
Control Configurator (B0193AV) for detailed instructions.]
a. On the ICC overview display for the CP60 in question (see
Figure 2-2), select the compound for the CP60, and then select View
Blocks/ECBs in this Compound.
Figure 2-2. Typical Overview ICC Display for a Control Processor
60
b. On the display that appears in response to Step a, select
Insert New Block/ECB. An ECB build display appears, which allows
you to build the ECB200 by enter-ing (and editing) the required
parameters. [Refer to Integrated Control Block Descriptions
(B0193AX) for the parameter definitions.] Figure 2-3 shows a
com-pleted ECB200 build (editing) display.
c. Select Done at the bottom of the display when all required
parameters are set.8
-
2. Quick-Start Example B0400FD Rev D Figure 2-3. Typical ECB200
(Parent) Editing Display
5. Place the FBM220/221 on-line.
At the I/A Series system:
a. Access the I/A Series System Management displays. [For
detailed information, refer to System Management Displays (B0193JC)
and/or the associated System Management on-line Help].
b. Select the FBM220/221 ECB on the System Management displays,
and click on the Equipment Change button.
c. On the Equipment Change window for the FBM220/221, select GO
ON-LINE.
6. Create and edit H1 device ECBs.
Create and edit the H1 device ECBs (ECB201s) in a manner similar
to that for the ECB200 (in Step 4). Refer to Integrated Control
Block Descriptions (B0193AX) for the parameter definitions. Refer
to the completed ECB201 editing display shown in Figure 2-4, and
the following NOTE.
NOTEIn the example shown in Figure 2-4, the PARENT parameter is
entered as a full path name: CP6SG5_ECB:SLOT06. As an alternative,
an abbreviated form can be used. For example, in this editing
display:
SLOT06 can be used, provided that the parent ECB (the ECB200)
resides in the PRIMARY_ECB compound (CP6SG5_ECB), or:SLOT06 can be
used if the child ECB is to reside in the current compound (the
same compound as the parent ECB).
Key parameter:Contains the nameused by the controlstation to
accessthis ECB.
Key parameter:Contains the letterbug ofthe associated FBM.9
-
B0400FD Rev D 2. Quick-Start Example Figure 2-4. Typical ECB201
(Child) Editing Display
7. Enable H1 device communication.
Enable communication between the FBM220/221 and the H1 device by
accessing the I/A Series System Management displays and proceeding
as follows:
a. Select the FBM220/221 module on the System Management
displays.
b. Select an H1 field device associated with the FBM220/221, and
click on the Equipment Change button.
c. On the Equipment Change window for the H1 field device,
select ENABLE COMMUNICATIONS.
d. Repeat for each additional H1 field device.
NOTEThroughout this text, the term DCI control blocks
(Distributed Control Interface blocks) refers to a specific set of
I/A Series control blocks used to interface the I/A Series system
with FOUNDATION fieldbus H1 field devices using digital
com-munications. The DCI control blocks include the following: -
BIN (Binary Input) - BOUT (Binary Output) - RIN (Real Input) - ROUT
(Real Output). Additional information is provided in Chapter 5
Configuration Information.
name of FBM220 (parent) ECB.Key parameter: Configured with
Contains the PD tag-Key parameter:
name of the field deviceassociated with this ECB.
(See note in text.)10
-
2. Quick-Start Example B0400FD Rev D 8. Create DCI blocks for
all device points.
The DCI blocks are created in the same general manner as the
ECBs (see Steps 5 and 6). For detailed instructions, refer to
Integrated Control Configurator (B0193AV). For parameter
definitions, refer to Integrated Control Block Descriptions
(B0193AX). A completed DCI block editing display is shown in Figure
2-5.
Figure 2-5. Typical DCI Block Editing Display
9. Verify H1 device data on the block detail displays.
To do this, access the I/A Series FoxSelect compound/block
overview utility. [Refer to Process Operations and Displays
(B0193MM) for details.] Access the block detail dis-play for each
DCI block created, and confirm its data.
You are now ready to configure the necessary compounds and
blocks for the desired control scheme. Refer to the following
documents to perform these operations:
DIN Rail Mounted FBM Subsystem Users Guide (B0400FA)
Integrated Control Software Concepts (B0193AW)
Integrated Control Block Descriptions (B0193AX).
Key parameter:Indicates process
Contains the pathname of the
variable connectedto this block.
Key parameter:
ECB201 associated with the field parameter to be accessed*.
*Once configured, the IOM_ID parameter cannot be readily
changed. To changethe IOM_ID parameter, you must delete the block
and re-enter it into the database. (A Delete/Undelete operation
will not perform this function.)11
-
B0400FD Rev D 2. Quick-Start Example 12
-
3. Product Application
This chapter addresses various requirements and constraints
relating to the connection of the FBM220/221 to the FOUNDATION
Fieldbus, and its operation in conjunction with the CP60 and the H1
field devices.
When planning for installation and operation of the FBM220/221
and the associated FOUNDATION fieldbus network, the following
factors must be considered:
FBM220/221 functional and environmental constraints
Field device configuration requirements
Topologies which FOUNDATION fieldbus H1 topologies can be used,
their charac-teristics, and how they are powered.
Control loop execution time.
Functional and Environmental Constraints
NOTEThe FBM220/221 serves as the Link Active Scheduler for the
H1 bus and does not support the simultaneous presence of any device
which also attempts to act as the LAS. Communication errors may
result if another LAS is added to the bus. Exam-ples would include
both the National Instruments NI-FBUS Dialog System and Fieldbus
Configuration System.
FBM220/221 is designed for use with the Control Processor 60
(CP60) I/A Series control station and I/A Series Fieldbus
Communication Modules (FCMs). It connects to the FCM(s) via a 2
Mbps Module Fieldbus, and coexists on this fieldbus with other
Fieldbus Modules (FBMs).
Version 6.3 (or higher) I/A Series software is required for
FBM220/221 operation.
Refer to the following documents for functional and
environmental specifications relating to the FBM220/221 modules and
the associated TAs:
FOUNDATION fieldbus H1 Communication Interface Module
(FBM220/221) (PSS 21H-2Z20 B4)
FBM220/221 TA FOUNDATION fieldbus Communication (PSS 21H-2W5
B4).
Field Device Configuration RequirementsAs used with the
FBM220/221 in various FOUNDATION fieldbus topologies, block support
in the H1 field devices is limited to the AI, AO, DI, and DO
function blocks. Also, in these FBM220/221 based topologies,
individual H1 devices cannot be configured to exchange data among
their AI, AO, DI, and DO function blocks. (Thus, closed-loop
peer-to-peer control at the H1 device level is not
supported.)13
-
B0400FD Rev D 3. Product Application Prior to configuring ECBs
and control blocks at the CP60 level, the H1 field device function
blocks must be configured in accordance with instructions contained
in their respective device user manuals. However, when configuring
the function blocks in these devices, there are several constraints
which must be observed. Refer to H1 Field Device Parameters on page
23 for spe-cific information.
TopologiesThe FBM220/221 supports all of the various FOUNDATION
fieldbus topologies. These topolo-gies can be physically wired with
the FBM220/221 placed at any location on the fieldbus.
A FOUNDATION fieldbus system is made up of one or more segments.
Each segment typically contains several active field devices, with
terminators located at the ends of the segment. Power for the
bus-powered devices is optionally derived from an I/A Series
equipment power supply located in the enclosure that houses the
FBM220 or FBM221 (see Chapter 4). With this powering
con-figuration, dc-to-dc power conversion is performed at the TA(s)
(see Figure 1-1). The user must supply the power wiring to the
TA.
Specific information on the various types of topologies and
their implementation are beyond the scope of this document.
However, there are specific factors to be considered regarding the
use of FBM220/221 in conjunction with the FOUNDATION fieldbus:
Allowable bus length
Bus power supply requirements
Bus power calculations
Intrinsic safety.
These factors are addressed in the following subsections of this
chapter.
For specific information on equipment (cabling, and so forth)
used in the FOUNDATION fieldbus topologies, refer to FOUNDATION
fieldbus document AG-140, Wiring and Installation, 31.25 kbits/s
Voltage Mode Wire Medium, Application Guide. For additional
information on field-bus implementation, refer to the listing of
FOUNDATION fieldbus documents in the Preface (page xii).
Bus Length CalculationsFor a given FOUNDATION fieldbus topology,
the bus length calculation is based on the following:
Length of the trunk
Number of spurs
Lengths of the spurs
Type(s) of cable used
The possible use of repeaters.
For detailed information, refer to FOUNDATION fieldbus document
AG-140, Wiring and Installa-tion, 31.25 kbits/s Voltage Mode Wire
Medium, Application Guide.14
-
3. Product Application B0400FD Rev D NOTEAs indicated in the IEC
fieldbus standard, there are many rules regarding cable lengths,
cable types, terminators, and so on. However, only a few rules are
absolute (and those rules are identified in the FOUNDATION fieldbus
document AG-140). FOUNDATION fieldbus, like most digital
communication schemes, is subject to per-formance variations based
on a large number of factors. Not all of these factors are likely
to be worst case simultaneously.
Bus Power SupplyAs indicated in Figure 1-1 (on page 1), power is
supplied to the FOUNDATION fieldbus (and all of its field devices)
by a FOUNDATION fieldbus power converter built into the TA. The
output voltage of this power supply (to the FOUNDATION fieldbus) is
30 V dc ( 6%) @ 300 mA. The power input source to the FOUNDATION
fieldbus power supply (input to the TA) is user-selected, and must
be 24 V dc and have an output wattage capable of supplying all
field devices on the bus (see Bus Power Calculations below). An
available source optionally used for this purpose is the 24 V dc
power used to supply the baseplates in the DIN rail module
subsystem rack (wiring to TA supplied by user).
Bus Power CalculationsThe FOUNDATION fieldbus power calculations
are made based on the following factors:
Power supply voltage (as described above, this is 30 V dc at the
output of the TA)
The resistance of each cable section
The location of the power supply (TA) on the network
The power consumption of each device (considering worst-case
inrush current and lift-off voltage), and its location on the
network.
For detailed information, refer to FOUNDATION fieldbus document
AG-140, Wiring and Installa-tion, 31.25 kbits/s Voltage Mode Wire
Medium, Application Guide.
Intrinsic Safety ConsiderationsThe current FBM220/221 product,
of itself, does not offer intrinsically safe operation. However,
intrinsic safety can be achieved through the use of barriers (such
as those manufactured by the Peperrel & Fuchs company)
strategically designed into the FOUNDATION fieldbus network. For
additional information on designing an intrinsically safe network,
refer to the FOUNDATION fieldbus document AG-163, Application Guide
for Intrinsic Safety.
NOTEField wiring from the TA to the H1 device(s) is not Class 1,
Division 2 certified.15
-
B0400FD Rev D 3. Product Application Control Loop Execution
TimeControl loop execution time calculations are used by process
engineers for loop timing purposes. Control loop execution time is
a function of the FBMs H1 macrocycle and the control processors
basic processing cycle (BPC). (The H1 Macrocycle and BPC operate
asychronously.) Appendix A Control Loop Performance describes how
the H1 macrocycle is established by the FBM220/221, and how loop
execution time is derived using the H1 macrocycle calculation (and
BPC) figures.16
-
4. Installation
This chapter provides installation information for the
FBM220/221 and its associated termination assembly (TA)
A typical FBM220/221 installation is shown in Figure 4-1.
Figure 4-1. FBM220/221 and Termination Assembly Installation
As shown in Figure 4-1, FBM220 or FBM221 mounts on the
baseplate, and the termination assembly (TA) connects to the
baseplate by means of a Type 1 termination cable.
The part numbers of the FBM220 and FBM221 and the associated TAs
are as follows:
FBM FBM P/N TA P/N
FBM220 P0917HA P0917RF
FBM221 P0917HB P0917RG
L+
L+
L+
L+
N-
N-
N-
N-
B01B02B03B04B05B06B07B08
A01A02A03A04A05A06A07A08
C01C02C03C04C05C06C07C08iPi+i-
i+i-i+i-i+i-i+i-i+i-i+i-
i+i-iPi
PiPiPi
PiP
iP
IN P U T
8
FBM201
, 0-2
0mA
0102
0304 0
5 0607 0
8
TerminationAssembly
TerminationCable
Fieldbus CommunicationsModules (2)Baseplate
Clamp-On Ferrite Core
ModuleFieldbus
FieldbusModule(FBM220/221) Clamp-On
Ferrite Cores
1ONOFFONOFF
2ONONOFFOFF
No.0123
Baseplate I. D.
Operational Status
FBM220Channel Isolated1 Communication, H1Fieldbus
FoundationP0917HA
Operational Status
FBM220Channel Isolated1 Communication, H1Fieldbus
FoundationP0917HA
Link ActiveLink Active
Operational Status
FBM220Channel Isolated1 Communication, H1Fieldbus
FoundationP0917HA
Operational Status
FCM10ECommunication10 Mbps Coaxial Ethernet to2 Mbps
FieldbusP0914YM
Tx
Tx
Rx
Rx
Fieldbus
Ethernet
Operational Status
FCM10ECommunication10 Mbps Coaxial Ethernet to2 Mbps
FieldbusP0914YM
Tx
Tx
Rx
Rx
Fieldbus
Ethernet
FCM Identification
P0914ZM
Left Module
User Defined
Right Module
Operational Status
Link Active
FBM220Channel I
solated
1 Communication, H
1
Fieldbus Foundatio
n
P0917HA
Link Active17
-
B0400FD Rev D 4. Installation The termination cable (connecting
between the TA and the baseplate) is available in the following
lengths:
0.5 m P0916DA1.0 m P0916DB3.0 m P0916DC5.0 m P0916DD10.0 m
P0916DE15.0 m P0916DF20.0 m P0916DG25.0 m P0916DH30.0 m P0916DJ
For FBM and TA installation instructions, refer to DIN Rail
Mounted FBM Subsystem Users Guide (B0400FA). In addition, for this
product offering (FBM220/221), clamp-on ferrite cores (EMI filters,
Foxboro P/N BF162YG, supplied with the Termination Assembly) must
be used as follows:
A single ferrite core for each baseplate must be installed on
the Module Fieldbus cable (Figure 4-1 on page 17). Install the
ferrite core (packaged with the FBM220/221) on the Module Fieldbus
cable in close proximity to the baseplate cable connector (on the
baseplate containing the FBM220/221), as shown in Figure 4-1.
Two ferrite cores must be installed on the termination cable.
Install the two ferrite cores (packaged with the FBM220/221) in
close proximity to the termination cable connector on the
baseplate, as shown in Figure 4-1.
Two ferrite cores must be installed on each pair of power input
wires connecting to the TA. Refer to Power Connections on page 20
for details.
Ensure that the cable clamp is fully closed. The metal cores
must be in direct contact on each side of the ferrite and with each
other to work correctly.
FOUNDATION Fieldbus Cable Connections
NOTEFor general information on FOUNDATION fieldbus cabling and
topologies, refer to FOUNDATION fieldbus document AG-140, Wiring
and Installation, 31.25 kbits/s Volt-age Mode Wire Medium,
Application Guide.
Make the FOUNDATION fieldbus cable connections in accordance
with the labels provided on the TA (see Figure 4-2). As indicated
on the labels for the two types of TAs, FBM220 has one
com-munication channel, and FBM221 has four.
Note that, for each channel, dual connection terminals are
provided for each cable connection (that is, two 0+ points, two 0-
points, and two sh points). This allows the FBM220/221 to be
located mid-bus, which requires two cable connections at each point
for signal feed-through.18
-
4. Installation B0400FD Rev D The FOUNDATION fieldbus cabling
must be configured such that one of the signal wires has a positive
(+) voltage and the other a negative (-). Cables available from
FOUNDATION fieldbus cable manufacturers use the following color
code:
+ = Orange
- = Blue
Cabling from other manufactures (with different color coding)
may be used, provided the polarity of the two signal wires is kept
consistent throughout the cable network.
Figure 4-2. TA FOUNDATION Fieldbus Cable Connections
In addition to the cable connections, switches are provided (see
Figure 4-3) to allow you to select bus termination (in or out) and
local powering of the bus (on/off ). The switches are provided in
pairs, one pair for each channel. To access the switches, remove
the component box covers by squeezing the sides of the cover just
below the cutout, and lifting it from the TA.
For each pair of switches, the left switch controls powering of
the bus from the TA (isolated 30 V dc power on/off ), and the right
switch controls bus termination selection (terminating resistor
in/out). To switch the local power (from the TA) on, depress the
upper part of the left switch. To use the terminating resistor
built into the TA, depress the upper part of the right switch.
NOTE:FBM221 TA (shown)has four channels;FBM220 TA has
onechannel.
SignalConnectionPoints:
C = o+B = o-A = Shield
C
A
B
COMMUNICATION
FBM221, Foundation Fieldbus04030201
o+o+o+o+o-o-o-o-shshshsh
C
A
B
COMMUNICATION
FBM221, Foundation Fieldbus04030201
o+o+o+o+o-o-o-o-shshshsh
Label
To H1Field
Devices
To H1FieldDevices
To H1Field
Devices
End-Bus Connection Mid-Bus Connection19
-
B0400FD Rev D 4. Installation Figure 4-3. TA Component Locations
(Covers Removed)
Power ConnectionsMake the power connections in accordance with
the labels provided on the TA (see Figure 4-4). Provision is made
for connecting redundant 24 V power sources, marked Primary and
Secondary on the label. (Redundancy control is provided internal to
the TA, by diode ORing of the two 24 V inputs.) Extra 24 V + and -
connection terminals are provided to allow for the possibility of
daisy-chaining of power connections, or for the possibility of
using additional power supplies for load sharing.
NOTE1. If you choose to use a power converter other than that
contained in the TA, it is not necessary to supply power to the
TA.2. The dc-to-dc converters in the TAs support short circuit
protection.
FBM IDENTIFICATION
CABLE TYPE 1 PRI SEC
OFF
1 2
C
B
A -24 V
+
Channel 1 switch pair:1 - Power converter powering of fieldbus
segment (on/off)*2 - Terminating resistor (in/out)*
Channel 2, 3, and 4 switch pairs (on FBM221 TA,P0917RG) operate
in a similar fashion.
FBM220 TA (P0917RF) or FBM221 TA (P0917RG), covers removed.*
Press upper part of Switch 1 to enable power converter (on).
** Alternately, power to the H1 segment can be supplied other
than via the TA.Press upper part of Switch 2 to use terminating
resistor.
dc to dcPower Converter(1 of 4)
Connections forIncoming SourcePower**
TerminationCable
Connector
FieldbusConnections20
-
4. Installation B0400FD Rev D Install the clamp-on ferrite cores
(Foxboro P/N BF162YG, packaged with the termination assem-bly) on
the power wires (see Figure 4-4 and Figure 4-5).
The power connections to the TA can originate from any 24 V dc
source. Depending on specific system requirements, the 24 V power
supplies in the DIN rail FBM subsystem enclosures (those used to
power the baseplates) may be used, or additional power supplies can
be attached the DIN rail holding the TAs.
For information regarding on/off selection of the isolated power
to the bus (using the TA switches) refer to FOUNDATION Fieldbus
Cable Connections on page 18. For information on power supply
loading, refer to Bus Power Calculations on page 15.
Figure 4-4. TA FOUNDATION Fieldbus Power Connections
+
24 V-
SecondaryPrimary24 Vdc24 VdcRETURNRETURN
1 2
OFF
1 - Power Supply2 - Terminating Resistor
FBM220 - 2 SwitchesFBM221 - 8 Switches
WARNINGFor installation details seedocument B0400FD
From 24 V Secondary PowerSupply (if Required by Application)
2 Clamp-On Ferrite Cores(BF162 YG)*
2 Clamp-On Ferrite Cores(BF162 YG)*
* See next figure forinstallation instructions.
LabeledCover
From 24 V Primary Power Supply21
-
B0400FD Rev D 4. Installation
Figure 4-5. Installation of Ferrite Cores in Power Cables
2 Clamp-On Ferrite Cores(EMI Filter) BF162YHNylon Cable Tie(User
Supplied)*
* The use of nylon cable ties (positioned as shown)
isrecommended to keep the ferrite cores in place on the cable.
Nylon Cable Tie(User Supplied)*
To 24 VPower SupplyTo TA
Install in close proximity[approx. 50 mm (2 in)] toconnectors on
TA22
-
5. Configuration Information
This chapter provides information necessary for configuring the
FBM220/221 and its associated H1 device function blocks and DCI
control blocks. This information is intended for use with the
Quick-Start Example presented in Chapter 2.
With regard to the FBM220/221 and its associated equipment,
configuration involves configur-ing the H1 device function blocks,
the associated DCI control blocks, and the ECBs representing the
FBM220/221 and H1 field devices. This chapter contains listings of
the required parameter settings for the H1 field devices, and
related configuration information. For procedural informa-tion,
refer to Chapter 2 Quick-Start Example; for information on setting
the ECB and DCI block parameters, refer to Integrated Control Block
Descriptions (B0193AX).
Table 5-1 shows the maximum number of H1 devices/point connects
allowed per FBM220/221.
H1 Field Device ParametersThe H1 field device function blocks
are configured off-line. (Neither the I/A Series control sta-tion
nor the FBM220/221 is involved in this process.) Table 5-2 through
Table 5-7 list typical parameters and required parameter settings
for configuring the H1 device blocks. (This informa-tion is
referenced in the Quick-Start example in Chapter 2.) For additional
information, refer to the user manuals for the devices, and the
following FOUNDATION fieldbus documents:
FF-890-1.3 Function Block Application Process Part 1
FF-891-1.4 Function Block Application Process Part 2.
NOTE1. Before setting the device block parameters, a unique tag
(label) and address must be entered for the device. Refer to the
procedure on page 7 for additional information.2. The terminology
used in the following tables reflects that used in document
FF-891-1.4 Function Block Application Process Part 2. The
terminology used in con-junction with your device configurator may
differ.
Table 5-1. FBM220/221 Maximum Configuration Specifications
FBMType
Maximum Numberof H1 Devices Allowed
Maximum Number ofPoint Connects Allowed
FBM220 16 24*
FBM221 32 (8 per port) 64 total per FBM (16 per port)**Note:
Each analog or discrete output requires two point connects, one for
the output and one for the readback.23
-
B0400FD Rev D 5. Configuration Information Table 5-2. Transducer
Block Parameters
Parameters*Required Settings(for I/A Series Operation) Notes
MODE_BLK PERMITTED TARGET NORMAL
(See Notes column.)AutoAuto
For PERMITTED mode, ensure thatOOS, MAN, and AUTO are
selectablefrom the list of possible values.
TARGET_ERROR** DESCRIPTION Blank Blank means No Error
condition.BLOCK_ERROR 0X0000 No Error condition.*The parameters
listed are example parameters, which generally apply to pressure
transmitters. See NOTE on p. 23 regarding the terminology
used.**The TARGET_ERROR parameter applies only to Foxboro pressure
transmitters.
Table 5-3. Resource Block Parameters
Parameters*Required Settings(for I/A Series Operation) Notes
MODE_BLK PERMITTED MODE TARGET MODE
Auto, Out-of-ServiceAuto
RequiredRequired
FEATURE_SEL Octet Text Strings
Reports Option
Fault State
Write Lock
Direct Write to Output Hdwr.
ASCII
Not supported; do not use
Partially supported (see Notes col-umn)
Not supported; do not use
Not supported; do not use
ISO 646/2375 compliant
Disables Alert Reports.
Supports Fail-safe detection at the device level upon loss of
communica-tion between the field device and FBM220/221. Fail-safe
logic using the SET_FSTATE/ CLR_FSTATE param-eters is not
supported.
Disables Write Lock
GRANT_DENY Not supported; do not useSHED_RCAS Not supported; do
not useSHED_ROUT Not supported; do not use*The parameters listed
are example parameters, which are generally applicable to most H1
devices. See NOTE on page 23 regarding the terminology used.24
-
5. Configuration Information B0400FD Rev D Table 5-4. Analog
Input (AI) Block Parameters
Parameters*Required Settings(for I/A Series Operation) Notes
MODE_BLK PERMITTED TARGET
Auto, Out-of- ServiceAuto
RequiredRequired
SIMULATE Not supported; do not use Use SIMOPT in CP60 RIN
block.OUT_SCALE EU@100%
EU@0%
Same value as the HSCI1 in CP60 RIN block (not enforced by
I/A).Same value as the LSCI1 in CP60 RIN block (not enforced by
I/A).
GRANT_DENY Not supported; do not useIO_OPTS Bit 10: Low cutoff
Yes/No User option; no constraint.STATUS_OPTS Bit 3: Propagate Fail
Forward Bit 6: Uncertain if Limited Bit 7: Bad if Limited
YesYes/NoYes/No
Option required.User option; no constraint.User option; no
constraint.
*The parameters listed are example parameters, which are
generally applicable to most H1 devices. See NOTE on page 23
regarding the terminology used.
Note: Bit 0 is the least significant, low-order bit.
Table 5-5. Analog Output (AO) Block Parameters
Parameters*Required Settings(for I/A Series Operation) Notes
MODE_BLK PERMITTED TARGET
Cascade, Auto, Out-of-ServiceCascade, Auto
Required for normal operation.Required for normal operation.
SIMULATE Not supported; do not use Use the SIMOPT in CP60 ROUT
block.
PV_SCALE EU@100%
EU@0%
Same value as the HSCO1 in CP60ROUT block (not enforced by
I/A)Same value as the LSCO1 in CP60 ROUT block (not enforced by
I/A)
GRANT_DENY Not supported; do not useIO_OPTS** Bit 1: SP-PV Track
in Manual Bit 3: SP-PV Track in LO Bit 4: SP Track retained target
Bit 5: Increase to Close
Bit 6: FS to Value Bit 7: Use FS value on Restart Bit 8: Target
to Man if FS Asserted Bit 9: Use PV for BKCAL_OUT
Not supported; do not use YesNot supported; do not use Not
supported; do not use
Yes/NoYes/NoNot supported; do not use Yes/No
Option required.
Use the REVOPT in CP ROUT block.No constraint; see note below.No
constraint; see note below.
If this option is used, the OUTOPT option in the CP60 ROUT block
must also be set (not enforced by I/A).25
-
B0400FD Rev D 5. Configuration Information STATUS_OPTS Bit 4:
Propagate Fail Backward Yes Option required.SP_RATE_DN 0 Value of 0
is required.SP_RATE_UP 0 Value of 0 is required.SP_HI_LIM Same
value as the HSCO1 in CP60
ROUT block (not enforced by I/A)Use CLPOPT with HOLIM in CP ROUT
block.
SP_LO_LIM Same value as the LSCO1 in CP60 ROUT block (not
enforced by I/A)
Use CLPOPT with LOLIM in CP ROUT block.
SHED_OPT Set to 1 (normal shed, normal return) Option
required.FSTATE_TIME No constraints See Note below.*The parameters
listed are example parameters, which are generally applicable to
most H1 devices. See NOTE on page 23 regarding the terminology
used.
Notes:1. Bit 0 is the least significant, low-order bit.2. The
Fault State action (IO_OPTs Bit 6) requires the FSTATE_TIME
parameter to be configured in the AO function block. FSTATE_TIME is
not settable by FBM220/221. In addition, the Fault State option in
the FEATURES_SELparameter must be configured in the Resource
block.
Table 5-6. Discrete Input (DI) Block Parameters
Parameters*Required Settings(for I/A Series Operation) Notes
MODE_BLK PERMITTED TARGET
Auto, Out-of-ServiceAuto
Required.Required.
SIMULATE_D Not supported; do not use. Use the SIMOPT in CP60 BIN
block.GRANT_DENY Not supported; do not use.IO_OPTS Bit 0: Invert
Yes/No User option; no constraint.STATUS_OPTS Bit 3: Propagate
Fault Forward Yes Option required.*The parameters listed are
example parameters, which are generally applicable to most H1
devices.
See NOTE on page 23 regarding the terminology used.Note: Bit 0
is the least significant, low-order bit.
Table 5-7. Discrete Output (DO) Block Parameters
Parameters*Required Settings(for I/A Series Operation) Notes
MODE_BLK PERMITTED TARGET
Cascade, Auto, Out-of-ServiceCascade, Auto
Required for normal operation.Required for normal operation.
SIMULATE_D Not supported; do not use Use SIMOPT in CP60 BOUT
block.
GRANT_DENY Not supported; do not use
Table 5-5. Analog Output (AO) Block Parameters (Continued)
Parameters*Required Settings(for I/A Series Operation)
Notes26
-
5. Configuration Information B0400FD Rev D H1 Transmitter LAS/LM
Disabling Procedure
NOTEThis procedure is referenced as part of the Quick-Start
Example in Chapter 2. (See the last bulleted item on page 7.)
For proper operation of any transmitter in the H1 FOUNDATION
Fieldbus subsystem, it is necessary to disable the backup Link
Active Scheduler (LAS) and Link Master (LM) capabilities in each
transmitter. This must be done to prevent a transmitter from
replacing the FBM220/221 as Link Active Scheduler and/or Link
Master on the Foundation Fieldbus network should the FBM220/221
become disabled (or be physically removed). This procedure only
applies to trans-mitters that have backup LAS or LM capability, and
in which this capability is enabled. Also, the procedure assumes
that the NI-FBUS (National Instruments-Fieldbus) Configurator is
being used to configure the transmitter. (For other H1 device
configurators, refer to the associated user guide.)
First, determine whether or not the LAS or LM feature is, in
fact, enabled for the subject transmitter: In the NI-FBUS
Configurator Project Window observe the icons representing the
transmitters. If an icon has the letters LM (in red) appearing
immediately above it, the LAS or LM capability is enabled. If LM
does not appear above the icon, these capabilities are either
disabled or not present in the transmitter.
To disable the LAS or LM capability in a transmitter, proceed as
follows:
1. In the NI-FBUS Configurator application Project Window
screen, with the transmit-ter icon and associated blocks displayed,
right-click on the blank space within the window and select
Advanced View. The display for the transmitter under configura-tion
now shows an FB branch and an MIB (Management Information Base)
branch, each labeled with blue lettering.
IO_OPTS Bit 0: Invert Bit 1: SP-PV Track in Manual Bit 3: SP-PV
Track in LO Bit 4: SP Track retained target Bit 6: FS to Value Bit
7: Use FS value on Restart Bit 8: Target to Man if FS Asserted Bit
9: Use PV for BKCAL_OUT
Yes/NoNot supported; do not useYesNot supported; do not
useYes/NoYes/NoNot supported; do not useNot supported; do not
use
User option; no constraint
Option required.
No constraint; see note below. No constraint; see note
below.
STATUS_OPTS Bit 4: Propagate Fault Backward Yes Option
required.SHED_OPT Set to1 (normal shed, normal return) Option
required.FSTATE_TIME No constraints See note below.*The parameters
listed are example parameters, which are generally applicable to
most H1 devices. See NOTE on page 23 regarding the terminology
used.
Notes: 1. Bit 0 is the least significant, low-order bit.2. The
Fault State action (IO_OPTs Bit 6) requires the FSTATE_TIME
parameter to be configured in the DO function block. FSTATE_TIME is
not settable by FBM220/221. In addition, the Fault State option in
the FEATURES_SELparameter must be configured in the Resource
block.
Table 5-7. Discrete Output (DO) Block Parameters (Continued)
Parameters*Required Settings(for I/A Series Operation)
Notes27
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B0400FD Rev D 5. Configuration Information 2. Expand the MIB
branch by clicking on the + box associated with it.
3. Scroll down to the Boot_Operat_Functional_Class parameter,
which is second from the bottom in the list.
4. Double-click on the Boot_Operat_Functional_Class parameter,
opening the MIB win-dow with the Boot_Operat_Functional_Class
parameter selected. (Note: If this trans-mitter does not have
backup LAS or LM capability enabled, this parameter will not appear
in the window. In this case, disregard this LAS/LM disabling
procedure and continue with configuration of the remaining
transmitters.)
5. Change the Boot_Operat_Functional_Class parameter value from
2 to 1 and click on Write Changes. LAS/LM capability is now
disabled.
6. Close the MIB window by clicking on the x box in the
upper-right corner. Right-click on a blank space in the Project
Window, and click on Advanced View to uncheck this view. The
original tree should now be displayed (the same as when the
transmitter was first displayed on the Project Window). Note,
however, that LM still appears over the transmitter icon.
7. Disconnect power from the transmitter and reconnect it. When
the transmitter icon now appears, the LM no longer exists (for this
transmitter) indicating that the capabil-ity has been disabled.
Block InterconnectionsIn order for process control operations to
be performed, equipment control blocks (ECBs), DCI control blocks,
and other I/A Series control blocks (for control scheme
implementation) must be created and configured by you. Figure 5-1
shows the required ECBs and illustrates the par-ent/child
relationship that exists between the H1 device ECBs (ECB201s) and
the FBM220/221 ECB (ECB200).
Figure 5-1. ECB Hierarchy
As indicated in Figure 5-1, an ECB200 must be configured for the
FBM220/221, and for each H1 field device associated with the
FBM220/221, a child ECB201 must be configured and con-nected to the
(parent) ECB200. Each parent ECB200 can support any number of child
ECB201
Control Station
(FCM)ECB110
(FBM220/221)ECB200
(H1 Device)ECB201
(H1 Device)ECB201
I/A Series28
-
5. Configuration Information B0400FD Rev D blocks, subject only
to the availability of I/A Series control station memory. The
ECB200 and ECB201 parameters are defined in Integrated Control
Block Descriptions (B0193AX).
Figure 5-2 shows the general flow of data between the field
device function blocks and the DCI blocks, and illustrates the
one-to-one functional relationship that exists between these two
block types.
Figure 5-2. Block/DCI Block Functional Relationships
Figure 5-3 shows the user-configured connections between the
various blocks in a typical control system. In this figure, two AI
function blocks in the same H1 field device are accessed by
corre-sponding RIN DCI blocks. Configuration for other types of
function blocks (AO, DI, and DO) and corresponding DCI blocks
(ROUT, BIN, and BOUT) is similar (similar interconnections between
blocks).
.OUTAI
RIN
To/from otherblocks (PIDA,control scheme
.CAS_INAO
.OUT_DDI
DO
(See Note)Function Blocks, I/A Series Control Software
ROUT
BIN
BOUT
etc.) in the
.CAS_IN_D
DCI BlocksInside Field Devices
.BKCAL_OUT_D
.BKCAL_OUT FBM220/221(InterfaceControl)Signal
NOTE:A field device may contain multiple function blocks, which
can be accessed via multipleassociated DCI control blocks.29
-
B0400FD Rev D 5. Configuration Information Figure 5-3. Typical
User-Configured Block Interconnections
The DCI blocks provide device resident parameter access for the
I/A Series control station. As indicated in Figure 5-2, for each
AI, AO, DI, or DO device function block that is to be interfaced to
the I/A Series system, a DCI block must be configured and connected
to the appropriate ECB201 block. The RIN and BIN blocks connect to
the primary output parameters of AI and DI function blocks
(respectively) in the H1 field devices. Likewise, the ROUT and BOUT
blocks connect to the primary input parameters of AO and DO
function blocks (respectively) in the H1 field devices.
NOTEConnection of duplicate RIN blocks to the same device AI
block is not supported.
Parameter access between the FBM220/221 and the H1 devices is
accomplished by the FBM220/221 through the H1 publish/subscribe
data transfer mechanism, which is described in Appendix A Control
Loop Performance.
Table 5-8 lists key parameters, which specify the linkages
between blocks/ECBs or contain the required transferable
values.
ECB201
Name PT_100Parent :SLOT03Dev_ID PT_100DevAddr Not UsedDev Name
PT_100 RIN #1
Name PT_100IOMID CP6SG5_ECB:PT_100PNT_No PT_100A1
RIN #2
Name TT_100IOMID CP6SG5_ECB:PT_100PNT_No TT_100A1
ECB200
Name SLOT03Dev_ID SLOT03Portex 0= port 1
AI Block #1
H1 Device
PD_Tag*Function Block Tag*
AI Block #2
PD_Tag*Function Block Tag*
* Syntax must conform to that used in the Foxboro ICC or
FoxCAEconfigurator, regarding upper/lower case, character string
length, etc.30
-
5. Configuration Information B0400FD Rev D Configuration
ProceduresProcedures for configuring the subsystem ECBs and control
blocks are covered in Steps 4 through 9 of the Quick Start Example
in Chapter 2. These steps involve creating and editing the required
ECBs, creating DCI blocks for all device points, and creating the
necessary control blocks (PID, and so forth) for closed-loop
control. The ECB200 and ECB201 parameters and parameters for all
control blocks (including DCI blocks) are defined in Integrated
Control Block Descriptions (B0193AX).
Table 5-8. Key Parameters
Block/ECB Parameter Usage Typical SyntaxAI, AO, DI, and DO
function blocks
OUT, OUT_D Contain values (analog, digital) to be accessed from
the external device.
N/A
CAS_IN, CAS_IN_D
Contain values (analog, digital) trans-ferred to the field
device.
N/A
AO and DO function blocks
BKCAL_OUT, BKCAL_OUT_D
Provide read-back values (analog, digital) and associated
status; used for output confirmation purposes.
N/A
ECB201 PARENT Contains the user-configured path-name of the
ECB200 (FBM220/221) hosting this field device.
:SLOT03(See Note below)
DVNAME Contains the user-configured PD tag-name of the field
device associated with this ECB201. Used by the FBM220/221 to
validate the identity of the field device when the device
connection is made. NOTE: Lower-case letters and special characters
not allowed for this parameter.
PT_100
ECB200 NAME A user-configured name used by the control station
to access this ECB.
SLOT03
DEV_ID User-configured letterbug of the FBM. It is copied into
the DEV_ID parame-ter of each DCI I/O block connected to this
ECB200.
SLOT03(See Note below)
BIN, BOUT, RIN, ROUT
IOMID Contains the user-configured path-name of the ECB201
(device ECB) associated with the field parameter to be accessed by
this block.
CP6SG5_ECB:PT_100
PNT_NO Contains the Function Block Tag in the external device
with which the DCI block input/output is to be associ-ated.
PT_100AI
BOUT, ROUT INI_PT A configurable string that specifies the point
address of an optional Bool-ean input connection in the BOUT or
ROUT block. If INI_PT is used, the block output tracks the readback
value when the input Boolean value is set.
.OUT_D
NOTE: The first four characters of the FBM letterbug (SLOT) are
created per user preference; the last two (05) reflect the physical
position of the FBM (and its associated baseplate). Refer to DIN
Rail Mounted FBM Subsystem Users Guide (B0400FA) for additional
information.31
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B0400FD Rev D 5. Configuration Information Block ProcessingThe
following is an overview of block processing (and data read/write)
operations.
NOTEScheduling of block processing depends on the period/phase
of the ECB or control block. For proper operation, you must
synchronize the associated ECB and control block processing, if
required, by configuring these parameters appropriately.
Processing of the ECBs and control blocks is performed in three
general phases.
1. ECBs scheduled to be processed are executed to read fresh
inputs:
When a parent or child ECB is processed, its DCI linked list is
examined. For each DCI block ready to be run in that BPC, its DCI
connection requests are added to a read list for that ECB.
When the read list is complete, a Read_Data message is sent to
the FBM220/221 to retrieve the current data contained in the DCI
connection records in the FBM. (If necessary, multiple messages are
used to retrieve all data required by the DCI blocks for that BPC).
All read list data is moved into the DCI connection records in the
DCI blocks as it is retrieved.
2. Control blocks scheduled to be processed are executed.
When all ECBs have been processed, the control blocks are
processed. When the DCI blocks are processed, all DCI connection
data is processed. During this processing, the DCI blocks set write
request flags in the DCI connection records for any outputs that
need to be written to the field devices.
3. ECBs scheduled to be processed, and containing fresh outputs
to be written, are exe-cuted.
When all control blocks have been processed, the ECBs are
processed once again to drive the field outputs that have been
changed in that BPC, in the control output blocks. When a DCI
parent or child ECB is processed, its linked list is examined once
again. For each DCI connection record with a pending write request
flag, a write list is generated.
When the write list is complete, a Write_Data message is sent to
the FBM220/221 to write the current output data contained in the
DCI connection records in the control station. (If necessary,
multiple messages are used to write all data requested by the DCI
blocks for that BPC).32
-
5. Configuration Information B0400FD Rev D DCI Block
FunctionsSome key DCI block functions that can be selected by
parameter settings are described in the fol-lowing paragraphs. (For
more specific information on these functions, refer to the RIN,
ROUT, BIN and BOUT DCI block descriptions in Integrated Control
Block Descriptions (B0193AX).
Periodic/Change-Driven ExecutionAll DCI blocks are executed
periodically according to their PERIOD/PHASE parameter
configu-ration. The ROUT and BOUT blocks normally set write
requests to the FBM only when the out-put value changes. If the
secondary loop timer (SECTIM) is configured nonzero, write requests
are also set if the timer expires between output changes.
Auto/Manual Mode OperationAll DCI blocks support the auto/manual
mode of operation. This allows the operator to manually substitute
the inputs in the BIN and RIN blocks, and to manually drive the
BOUT and ROUT outputs.
Simulation ModeThe simulation mode is supported in all DCI
blocks. When the SIMOPT parameter is set, the DCI connections are
not used. In the BIN and RIN blocks, the input is provided by a
separate, configurable input parameter. In the BOUT and ROUT
blocks, confirmation of the output value change is simulated
automatically.
Time StampingAll DCI block field input and field output value
parameters are time stamped. A separate time stamp parameter,
TSTAMP, is provided in each DCI block for this purpose. The
timestamp is provided by the FBM220/221 for input parameters and by
the I/A Series control station for out-put parameters. It is
updated when the input value is changed in the FBM220/221, and when
the output value is changed in the I/A Series control station.
When simulation mode is used, all time stamps are provided by
the control station.
Signal Conditioning and Linear ScalingSignal conditioning and
linear scaling of analog inputs/outputs can be configured in the
RIN and ROUT blocks. The SCI and SCO parameters can be used to
specify any of the standard signal conditioning algorithms
supported by the I/A Series control station, except thermocouple
and RTD conversions. For a description of the SCI conditioning
algorithms, refer to the appendix associated with the RIN block [in
Integrated Control Block Descriptions (B0193AX)]. For a description
of the SCO conditioning algorithms, refer to the ROUT block [also
in Integrated Control Block Descriptions (B0193AX)].
Input LimitingThe input values of the RIN block are constrained
by the engineering range (HSCI1/LSCI1) con-figured in the block. If
the input value is out-of-range, it is clamped to the high/low
range value, and the corresponding LHI/LLO status bit is set in the
value record.33
-
B0400FD Rev D 5. Configuration Information Confirmed OutputsThe
outputs of the BOUT and ROUT blocks are confirmed by a readback of
the actual function block value. When an output is changed by I/A
Series in either of these blocks, it is stored in a request
location that is part of the output value record in the block. [In
I/A Series terminology, this type of output is referred to as a
Shadow output and is reflected in the Shadow status bit (Bit 12) in
the value record.] The actual output value of the DCI block is not
updated until con-firmation of the requested change at the field
device is received.
The request value is written to the FBM220/221, which publishes
this value as the CAS_IN (or CAS_IN_D) input to the field device
during the next H1 function block macrocycle. When the AO (or DO)
function block runs, it uses the published value and stores it into
its BKCAL_OUT (or BKCAL_OUT_D) output parameter. This value is then
published back to the FBM220/221 by the field device. The
FBM220/221 then updates the readback value in the DCI output
con-nection record with this value.
On the next BOUT (or ROUT) block cycle, the block output value
is updated in the I/A Series control station with the readback
value from the FBM220/221, thus completing confirmation of the
change.
Output ClampingThe output value of the ROUT block is constrained
by the limit values (HOLIM/LOLIM) con-figured in the block. The
limit values are constrained by the engineering range (HSCO1/LSCO1)
configured in the block. If the output value exceeds its limiting
constraints, it is clamped to the high/low value, and the
corresponding LHI/ LLO status bit is set in the value record.
Output InitializationThe output value of a BOUT or ROUT block
initializes to the readback value in each of the fol-lowing
cases:
When the compound containing the block is turned on
When the block is installed and runs its first cycle
When control station/FBM communication recovers from a failure
condition
When the Initialization Input (INI_PT), if used, is set
When the DCI connection record indicates an Initialization
Request (IR), Local Override (LO), Not Invited (NI), or Open Loop
(LHI and LLO) condition in the AO (or DO) function block in the
field device.
The readback value contains the most recent value of the
BKCAL_OUT (or BKCAL_OUT_D) parameter in the AO (or DO) function
block.
Cascade InitializationUpstream logic in a cascade is initialized
by a BOUT or ROUT block in each of the following cases:
When the DCI block initializes
When the DCI block mode changes from Manual to Auto mode
When the DCI connection record indicates an Initialization
Request (IR) from the AO (or DO) function block in the field
device34
-
5. Configuration Information B0400FD Rev D When control
station/FBM communication recovers from a failure condition
When the readback value transitions from Bad and/or
Out-of-Service status to Good status
When the Initialization Input (INI_PT), if used, is cleared.
Fail-Safe ActionsFail-safe actions are performed in accordance
with specific parameters set in ECB200, and in the ROUT and BOUT
DCI blocks. In ECB200, the following parameters control fail-safe
actions:
FSENAB Fail-Safe Enable, when true, activates the FSDLAY timer
to detect a com-munication failure from the control station, and
start fail-safe action in the FBM. The FSENAB setting is downloaded
to the FBM220/221 when the FBM220/221 is rebooted. It is used by
the FBM220/221 to enable/disable the logic to assert fail-safe
action when a loss of control station communication is detected, or
when a control station fail-safe request is received.
FSDLAY Fail-Safe Delay is a communications fail timer. When
enabled by FSENAB, it specifies the length of time (in units of
0.01 seconds) that the FBM can be without communication from the
control station before taking fail-safe action. If the Fail-Safe On
Commfail bit is set in the FSOPTN parameter of the output control
block (ROUT or BOUT), the FBM sets the Initialize Fail-safe bit in
the status of the OUT parameter of the associated AO function
block. When this value is next received by the connected device,
the device asserts fail-safe and drives its output to the fail-safe
value.
For example, the default value of 1000 in FSDLAY causes the FBM
to wait 10 sec-onds between read/write messages before going to the
Fail-safe state (provided FSENAB is configured true).
In the ROUT and BOUT DCI blocks, the following parameters
control fail-safe actions:
FSOPTN Fail-safe Option is a configurable option that specifies
the fail-safe condi-tions and action to be taken in the FBM for an
output point in a ROUT block:
Assert fail-safe if input/measurement error.
Set/clear fail-safe when SETFS input is set/cleared.
Assert fail-safe if control station-to-FBM communication failure
was detected by the FBM.
Combinations of these conditions for fail-safe can be
specified.
SETFS Set Fail-safe Request is a settable Boolean parameter that
requests fail-safe action to be set/reset by the FBM and/or field
device for the specific output value of the ROUT/BOUT block.
FSOUT Fail-safe Real Output (ROUT block only) specifies the real
fail-safe value that is to be used by the external device when any
condition specified in FSOPTN exists.
FSCOUT Fail-safe Boolean Output (BOUT block only) specifies the
binary fail-safe value that is to be used by the external device
when any condition specified in FSOPTN exists.35
-
B0400FD Rev D 5. Configuration Information The fail-safe options
configured in the DCI output blocks are downloaded into the
FBM220/221 when the DCI output connection is established. If any of
the FSOPTN fail-safe options are set, the FBM220/221 writes the
fail-safe value to the AO (or DO) function block in the field
device.
Fail-safe action can be triggered automatically for each output
when loss of control station com-munication is detected by the
FBM220/221. If FSENAB is set, and if the Assert fail-safe if
control station to FBM communication failure option in FSOPTN is
set, the FBM220/221 initializes a fail-safe timer for that
connection to the Fail-Safe Delay (FSDLAY) value downloaded from
the control station when the FBM220/221 is rebooted. The fail-safe
timer counts down between receipt of Read_Data and Write_Data
messages. When either message is received for an output connection,
its fail-safe timer is reset to the FSDLAY value. If the fail-safe
timer expires, FBM220/221 sets the Initialize Fault State (IFS)
status bit of the OUT (or OUT_D) parameter in its AO (or DO)
function block connected to the CAS_IN (or CAS_IN_D) parameter of
the AO (or DO) function block in the field device. When the
FBM220/221 next publishes this out-put value to the field device,
the field device asserts fail-safe by driving the AO (or DO) output
to the fail-safe value specified by FSOUT/FSCOUT in the function
block.
Fail-safe action can also be triggered by either of two events
in a BOUT or ROUT block: when the fail-safe request parameter
(SETFS) is toggled or, if the error option (EROPT) is configured,
when the status of the primary input in the block goes bad (or
becomes good). When either event occurs, a Write_Data message is
sent to the FBM220/221, with the Fail-safe Request bit set (or
cleared) cleared in the message. If FSENAB is set, and if the
Set/clear fail-safe when SETFS input is set/cleared option in
FSOPTN is set, the FBM220/221 sets the Initialize Fault State (IFS)
status bit of the OUT parameter in its AO function block connected
to the CAS_IN (or CAS_IN_D) parameter of the AO (or DO) function
block in the field device. When FBM220/221 next publishes this
output value to the field device, the field device asserts
fail-safe by driving the AO (or DO) output to the fail-safe value
specified by FSOUT/FSCOUT in the function block.
When communication with the I/A Series control station is
restored, the fail-safe timers are auto-matically reset to full
value by the first Read Data (or Write Data) message to each
connection. If the fail-safe had been previously asserted by a
request from the control station, and the fail-safe condition still
exists in the control station, the Write Data message causes the
IFS status bit to remain set in the function block. Otherwise, the
Write Data message causes the IFS status bit to be cleared.
Heartbeat Message HandlingThe CP60 sends a heartbeat message to
the FBM220/221 every basic processing cycle (BPC) con-figured in
the I/A Series control station. This message provides the mechanism
to support the fol-lowing functions:
Synchronization of the FBM220/221 time and date with the I/A
Series system time and date
Time stamping of H1 device function block data.
The existing heartbeat message contains the latest I/A Series
system date and time, maintained by the I/A Series control station.
The format of this field is a single, 6-byte integer containing the
rel-ative time since Jan.1, 1970 (the so-called UNIX time base) in
10 millisecond increments. This time is updated in the control
station periodically by the I/A Series system timekeeper.36
-
5. Configuration Information B0400FD Rev D The FBM220/221
converts this field into an appropriate date and time required by
the field devices. The FBM220/221 then uses this time to reset the
time base used to provide the millisec-onds-since-midnight time
stamp of data received from the H1 field devices.
Control Schemes Using DCI B