SGW1-IA3-MMP – Modbus Multiplexer ExemysThe SGW1-IA3-MMP is a Modbus communications multiplexer / converter over serial ports. It allows you to connect Modbus RTU / ASCII masters

SGW1-IA3-MMP – Modbus Multiplexer Exemys

www.exemys.com SGW1-IA3-MMP User’s Manual Rev. 1 1



Exemys products are constantly evolving to meet the needs of our customers. For this reason, the specifications and capabilities are subject to change without notice. Find updates at www.exemys.com Copyright © Exemys, 2007. All rights reserved.



Page Index

1111 IntroductionIntroductionIntroductionIntroduction ________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 4444

1.11.11.11.1 User’s Manual PurposeUser’s Manual PurposeUser’s Manual PurposeUser’s Manual Purpose ________________________________________________________________________________________________________________________________________________________________________________________________ 4444

1.21.21.21.2 Product OverviewProduct OverviewProduct OverviewProduct Overview ________________________________________________________________________________________________________________________________________________________________________________________________________________ 4444

1.31.31.31.3 Ordering CodesOrdering CodesOrdering CodesOrdering Codes ____________________________________________________________________________________________________________________________________________________________________________________________________________________ 5555

1.41.41.41.4 Technical SpecificationsTechnical SpecificationsTechnical SpecificationsTechnical Specifications ____________________________________________________________________________________________________________________________________________________________________________________________ 5555

2222 InstallationInstallationInstallationInstallation ________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 6666

2.12.12.12.1 PowerPowerPowerPower ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 6666

2.22.22.22.2 ConnectionsConnectionsConnectionsConnections ________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 6666

2.32.32.32.3 LED indicatorsLED indicatorsLED indicatorsLED indicators ________________________________________________________________________________________________________________________________________________________________________________________________________________________ 7777

3333 ConfigurationConfigurationConfigurationConfiguration ________________________________________________________________________________________________________________________________________________________________________________________________________________________ 8888

3.13.13.13.1 Master / Slave configuration parametersMaster / Slave configuration parametersMaster / Slave configuration parametersMaster / Slave configuration parameters ____________________________________________________________________________________________________________________________________________ 9999

3.23.23.23.2 Serial Port ConfigurationSerial Port ConfigurationSerial Port ConfigurationSerial Port Configuration ____________________________________________________________________________________________________________________________________________________________________________________ 10101010

3.33.33.33.3 RTS Control ConfigurationRTS Control ConfigurationRTS Control ConfigurationRTS Control Configuration ________________________________________________________________________________________________________________________________________________________________________________ 11111111

3.43.43.43.4 Slave ranges, ConfigurationSlave ranges, ConfigurationSlave ranges, ConfigurationSlave ranges, Configuration ____________________________________________________________________________________________________________________________________________________________________________ 11111111

3.53.53.53.5 Other configuration settings.Other configuration settings.Other configuration settings.Other configuration settings. ________________________________________________________________________________________________________________________________________________________________________ 14141414

4444 TTTTypical Usage Modesypical Usage Modesypical Usage Modesypical Usage Modes ________________________________________________________________________________________________________________________________________________________________________________________________ 15151515

4.14.14.14.1 Multiplexer ModeMultiplexer ModeMultiplexer ModeMultiplexer Mode ________________________________________________________________________________________________________________________________________________________________________________________________________ 15151515

4.24.24.24.2 DeDeDeDe----Multiplexer ModeMultiplexer ModeMultiplexer ModeMultiplexer Mode ________________________________________________________________________________________________________________________________________________________________________________________________ 16161616

4.34.34.34.3 Converter ModeConverter ModeConverter ModeConverter Mode ________________________________________________________________________________________________________________________________________________________________________________________________________________ 17171717

4.44.44.44.4 Interchange memory ModeInterchange memory ModeInterchange memory ModeInterchange memory Mode ________________________________________________________________________________________________________________________________________________________________________________ 17171717

5555 MonitoringMonitoringMonitoringMonitoring ____________________________________________________________________________________________________________________________________________________________________________________________________________________________ 18181818

A. FIRMWARE UPGRADEA. FIRMWARE UPGRADEA. FIRMWARE UPGRADEA. FIRMWARE UPGRADE 19191919

B. FACTORY SETTINGSB. FACTORY SETTINGSB. FACTORY SETTINGSB. FACTORY SETTINGS 22222222

C. DIN RAIL MOUNTC. DIN RAIL MOUNTC. DIN RAIL MOUNTC. DIN RAIL MOUNT 23232323



1 Introduction

1.1 User’s Manual Purpose

The purpose of this manual is to provide the instructions for installing and operating the SGW1-IA3-MMP quickly and simply. The manual begins with a general description of the product, following the instructions for the correct installation of the hardware. The configuration and operation of the device is detailed later.

Acronym Description PC Personal Computer

USB Universal Serial Bus LED Led Indicator GND Ground (Reference)

1.2 Product Overview

The SGW1-IA3-MMP is a Modbus communications multiplexer / converter over serial ports. It allows you to connect Modbus RTU / ASCII masters to Modbus RTU / ASCII slaves. Each of the serial devices can operate with Baud Rate, Data Bits, Parity, Bits Stop and different Modbus protocol type (RTU or ASCII). The SGW1-IA3-MMP orders the interrogations coming from the different masters assigning a priority according to the order of arrival of the different masters, and then sends them to the slaves.

As an additional function, the device allows the exchange of information between Modbus masters through the 1000-byte exchange memory that can be read and written by any of the connected masters.



1.3 Ordering Codes

Part Number Description

SGW1-4B04B04B04B0-00000000-IA3-MMP 4 RS-232 / RS-485 ports

SGW1-13B013B013B013B0-00000000-IA3-MMP-CFCFCFCF 1 RS232with flow control + 3 RS-232 / RS-485 ports

1.4 Technical Specifications

CommunicationCommunicationCommunicationCommunication ProtocolProtocolProtocolProtocol Modbus RTU, Modbus ASCII.

Communication PortsCommunication PortsCommunication PortsCommunication Ports 4 RS232/RS485 + 1 USB type B.

ConfiguraConfiguraConfiguraConfigurationtiontiontion Serial USB console.

FirmwaFirmwaFirmwaFirmware upgradere upgradere upgradere upgrade Via serial RS232 console

LED’sLED’sLED’sLED’s IndicaIndicaIndicaIndicatorstorstorstors Power, Modbus data

DimensionsDimensionsDimensionsDimensions 100 mm x 22,5 mm x 112 mm (Height x Width x Length).

PowerPowerPowerPower

10 a 30 [Vdc]. 12 Vdc – 70 [mA] 24 Vdc – 40 [mA].

TemperaturTemperaturTemperaturTemperatureseseses

Operation: -15 to 65 ºC. Storage: -40 to 75 ºC.

WarrantyWarrantyWarrantyWarranty

1 year Technical support included.



2 Installation

2.1 Power

The SGW1-IA3-MMP accepts a power supply in the range of +10 to 30 Vdc and must connect the positive of the power supply to terminal No. 17 and the negative of the power supply to terminal No. 18, as shown in the following figure:

2.2 Connections

SGW1-4B04B04B04B0----00000000-IA3-MMP SGW1-13B013B013B013B0----00000000-IA3-MMP-CFCFCFCF

RS232 ports are DTE type. That is, it is transmitted through the TX terminal and is received by the RX terminal. If you want to connect another DTE device you must cross the terminals Tx and Rx.



2.3 LED indicators

The SGW1-IA3-MMP has five indicator LEDs. One of them indicates that the device is energized (Power). While the other four are each linked to their serial port and shows the state of communications.



3333 Configuration The SGW1-IA3-MMP provides a command console for configuration via USB port. To access it, the SGW1-IA3-MMP must be connected to a USB port on a PC and it must have the Exemys terminal program called Exemys Console. The driver for the USB can be downloaded from here: http://www.exemys.com/rmsrmdriver The terminal program can be downloaded from here: http://www.exemys.com/console Once the driver and the terminal type program have been installed, the terminal must be run, connect the SGW1-IA3-MMP to a USB port on the PC and go to the Connection -> USB menu, a window will open with the description of all the Exemys products with USB found. Select with double click the product to be configured and pressing ENTER will show a ">" sign indicating that you can enter the configuration commands listed below.

In the commands below, the suffix XXXX must be replaced by A,A,A,A, BBBB, CCCC or D D D D depending on the serial port that you want to configure.



3.1 Master / Slave configuration parameters

Command Description

MSCOM:

(M|S)(M|S)

(M|S)(M|S)

Configures if a Master or a Slave will be connected to the COM • MMMM = Master. / SSSS = Slave. Example of use: MSCOM:MMSM (COM A, B and D connected to master devices, COM C connected to slave/s device/s).

SLVTOUT:

(50..30000)

[ms]

Sets the maximum waiting time in the slave response. This command applies to all ports connected to slaves. NOTE:NOTE:NOTE:NOTE: When the SGW1-IA3-MMP sends an order to the slave it expects a response from the slave. If the slave does not respond within this time it will go to the next master. • Value = 50 ... 30000 [ms]. Example of use: SLVTOUT:100

SLVTOUTx:

(50..30000)

[ms]

Sets the maximum waiting time in the response of the slaves connected to the X port. NOTE: NOTE: NOTE: NOTE: When the SGW1-IA3-MMP sends an order to the slave it expects a response from the slave. If the slave does not respond within this time it will go to the next master. • Value = 50 ... 30000 [ms]. Example of use: SLVTOUTA:100

PRIORITY:

(0..100)

[ms]

Set the response priority level for all masters connected to the device. NOTE:NOTE:NOTE:NOTE: The priority of level 0 is the maximum. For each priority level added, extra 10 milliseconds are delayed before responding to that master's order. This command applies to all ports connected to masters. • Value = 0 ... 100 [ms]. Example of use: PRIORITY:1

PRIORITYx:

(0..100)

[ms]

Sets the response priority level of the master connected to the X port. NOTE:NOTE:NOTE:NOTE: The priority of level 0 is the maximum. For each priority level added, extra 10 milliseconds are delayed before responding to that master's order. • Value = 0 ... 100 [ms]. Example of use: PRIORITYB:2



3.2 Serial Port Configuration

Command Description

BAUDx:

(1200|…|

115200)

Configures the baud rate of the X port. • Values = 1200, 2400, 4800, 9600,9600,9600,9600, 14400, 19200, 28800, 38400, 57600 or 115200.. Example of use: BAUDA:115200

BITSx:

(7|8)

Configures the data bits of the X port. • Values = 7 or 8. Example of use: BITSB:7

PARITYx:

(N|E|O)

Configure the parity of port X. • N = NONE - / = EVEN - (Even Parity) / O = ODD - (Odd Parity) Example of use: PARITYC:E

STOPx:

(1|2)

Set the stop bits for the X port. • Values = 1 or 2. Example of use: BITSB:2

PROTOCOLx:

(R|A)

Configure Modbus type of port X. • RRRR = Modbus RTU / AAAA = Modbus ASCII Example of use: PROTOCOLA:R

PKTTOUTx:

(3..50)

[Bytes Time]

Modbus RTU packet expiration time for port X. • Value = 3 ... 50 [Bytes Time]. Example of use: PKTTOUTD:4

EXCEPTIONx:

(E|D)

Enable or Disable the exceptions for port X. • E = Enabled / D = Disabled Example of use: EXCEPTIONA:D

WPROTECTx:

(E|D)

Enables or disables write protection of Modbus registers for the master connected to the port X. • E = Enabled / D = Disabled Example of use: WPROTECTBBBB:D

� PKTTOUT - Modbus RTU packet expiry time: Modbus RTU packets are separated

from each other by a time interval. This parameter allows you to change the maximum time to count after the last byte of the packet is received, during which the SGW1-IA3-MMP will assume that the packet has not yet been terminated. After this maximum time, the SGW1-IA3-MMP will assume that the packet has finished arriving. The time is entered in one-byte time units, with a minimum of 3 units.



� EXCEPTION: Enables or disables the SGW1-IA3-MMP to respond or not to exceptions in case of communication errors. If the option is disabled the SGW1-IA3-MMP will respond to the errors with silence, otherwise, it will return an exception code that we detail below:

� 0x0A: This exception is caused by: The message has the address (ID) of a device that is not configured in the slave table.

� 0x0B: This exception occurs for: No response was received within the maximum message wait time (Message response time).

3.3 RTS Control Configuration

The SGW1-13B0-00-IA3-MMP-CF can handle the RTS pin on port A for the activation of the transmission in devices, such as a radio modem. The RTS pin handles a timer, which will activate a time before sending data through the serial port and will turn off a time after the end of the shipment. This option applies only to port A on the device.

Command Description

RTSLOGIC:

(0|1)

Sets the RTS polarity. • 0000 = Inverted. / 1111 = Normal. Example of use: RTSLOGIC:1

RTSDON:

(0..1000)

[ms]

Configures the delay prior to sending data. • Value = 0 ... 1000 [ms]. Example of use: RTSDON:50

RTSDOFF:

(0..1000)

[ms]

Sets the delay after sending data. • Value = 0 ... 1000 [ms]. Example of use: RTSDOFF:20

Since firmware version 2.22.22.22.2, if RTSDON is set to 0, the RTS pin will stay steady ON of OFF according to the value configured with RTSLOGIC.

3.4 Slave ranges, Configuration

In SGW1-IA3-MMP it is possible to limit the ranges of slaves that can be accessed by each of the masters independently. If the slave attempted to interrogate is not within the allowed ranges, the request is ignored. It is also possible to apply an Offset to the ID of the Modbus queries that arrive from the masters before sending them to the corresponding slave port. This allows you to change the ID with which the slaves are read from the point of view of the masters.



A total of 32 ranges can be configured, with the following data: Command Description

SRANGEADD:

(M,F,L,S,O,E)

Adds a range of slaves to which the indicated master will access. • M:M:M:M: (A | B | C | D) - This is the port to which the Master is connected. • F:F:F:F: (1 ... 254) - Lower range rank. • L:L:L:L: (1 ... 254) - Top rank of the range. • S:S:S:S: (A | B | C | D) - It is the port to which the Slaves are connected. • O:::: (0 ... 254) - Offset to subtract the ID number when sending it to the slave.• E:::: (E | D) – Enables/Disables Modbus ENRON conversation Parameters O and E are optional Example of use: SRANGEADD:A,20,50,C Queries arriving at port A with Modbus ID between 20 and 50 are sent to port C without applying offset to the received ID. SRANGEADD:A,20,50,C,1,E

Queries arriving at port A with Modbus ID between 20 and 50 are sent to port C C applying a -1 offset to the ID received and converting the query to ENRON format.

SRANGEDEL:

(M,F,L,S,O,E|ALL)

Deletes a range of slaves to which a designated master has access. • M:M:M:M: (A | B | C | D) - This is the port to which the Master is connected. • F:F:F:F: (1 ... 254) - Lower range rank. • L:L:L:L: (1 ... 254) - Top rank of the range. • S:S:S:S: (A | B | C | D) - It is the port to which the Slaves are connected. • O: (0 ... 254) - Offset to subtract the ID number when sending it to the slave. • E: (E | D) – Enables/Disables Modbus ENRON conversation Parameters O and E are optional • ALL: Clears the range table completely. Example of use: SRANGEDEL:A,20,50,C,0 Clear Range A, 20.50, C, 0 SRANGEDEL:ALL Deletes all ranges.

SRANGELIST

Lists configured slave’s ranges.

• Example 1: Enable master A to access slaves with ID between 1 through 20 connected in COM B and slaves 35 through 39 that will be connected in COM C.

SRANGEADD:A,1,20,B,0

SRANGEADD:A,35,39,C,0



• Example 2 (Offset use): Read four Modbus slaves from two masters. Two of the slaves have the ID # 1 and the other two the ID # 2. The devices will be connected as follows to the device: • Port A: Master 1. • Port B: Master 2. • Port C: First pair of slaves with ID # 1 and # 2. • Port D: Second pair of slaves with ID # 1 and # 2. The configuration will be as follows:

SRANGEADD:A,1,2,C,0

SRANGEADD:A,3,4,D,2

SRANGEADD:B,1,2,C,0

SRANGEADD:B,3,4,D,2

In this way, both masters will be able to access the first pair of slaves using ID # 1 and # 2, and the second pair of slaves using ID # 3 and # 4.



3.5 Other configuration settings.

Command Description

INTSLVID:

(1..254)

Configure the ID of the internal slave to access the data transfer memory. • Values = 1 ... 254. Example of use: INTSLVID:110

TRACESON:

(A|B|C|D|ALL)

Enables the traces by the USB console, for port X. Or for all ports by setting ALL. • Values = A, B, C, D, or ALL. Example of use: TRACESON:D

TRACESOFF:

(A|B|C|D|ALL)

Disables the traces by the USB console, for port X. Or for all ports by setting ALL. • Values = A, B, C, D, or ALL. Example of use: TRACESOFF:ALL

TRACESFULL:

(E|D)

Turn on or off the aggregate of information to the TRACES. This aggregated information is the content of Modbus frames expressed in hexadecimal. NOTENOTENOTENOTE: Keep in mind that for this command to work, TRACES must be enabled on at least one port • EEEE = Enabled. / DDDD = Disabled. Example of use: TRACESFULL:OFF

LIST Lists the current device configuration.

HELP Displays the list of all available commands with syntax and descriptive text.

FACTRESET Restart the machine's factory settings.



4 Typical Usage Modes

4.1 Multiplexer Mode

In this mode of use the SGW1-IA3-MMP allows up to 3 Modbus masters to query 1 or more slaves simultaneously. Example of configuration: 3 Masters and 1 Slave. The first command that we should use is MSCOM and set Port A in slave mode and the other ports master mode. Then, if necessary, configure each particular port according to its characteristics, as in the previous example.

With the BAUD, BITS, PARITY, STOP and PROTOCOL commands you can configure the particular characteristics of each port. The team will perform conversions between one COM and another if necessary. It is important to take into account the response time of the slaves. This time can be set on each port connected to slaves with the SLVTOUT command. Then you must set the response time (timeout) on each of the master devices connected to the device. As a rule the master timeout must be at least N times the timeout set in SGW1, N being the number of masters (1, 2 or 3)



4.2 De-Multiplexer Mode

In this mode of use the SGW1-IA3-MMP has the ability to establish communication between a master and several slaves with different characteristics, such as Modbus type, parity, baud rate, etc. To do this you must configure each port of the device with the particular characteristics of each slave. Example of configuration: 1 Master and 3 Slaves (with different characteristics in their series ports). The first command to use is MSCOM and set Port A in "Master" mode and the other Ports in "Slaves" mode”.

In order for the device to know which port to send the Modbus query sent by the master, the Modbus ID range of the slave devices of each port must be configured. Use the SRANGEADD, SRANGEDEL, and SRANGELIST commands With the BAUD,BITS,PARITY,STOP and PROTOCOL commands you can configure the particular characteristics of each port. The team will perform conversions between one COM and another if necessary.



4.3 Converter Mode

In this mode of use the SGW1-IA3-MMP functions as a Modbus protocol converter, converting from Modbus ASCII to Modbus RTU and vice versa. It can also function as an RS232 / RS485, parity, stop bit and / or baud rate converter.

4.4 Interchange memory Mode

This feature allows Modbus masters connected to the device to exchange information between them by reading and writing a memory area of the SGW1-IA3-MMP intended for this purpose. This mode can be used in conjunction with the multiplexer mode. The exchange records range from 40001 to 41000 (Holding Registers) The Modbus ID number of the internal slave is 240. It can be modified through the INTSLVID command. •Example 1: A master connected to Port A, henceforth Master A, needs to read 50 registers (Holding Register) of the master connected to Port B, henceforth Master B, and in turn Master B needs to read 100 registers (Holding Register) of master A. For this we must configure master A to read registers 40001 to 40050 of slave # 240 and to write registers 40051 to 40150 with the information that master B needs. In the same way, set up master B to read registers 40051 to 40150 of slave # 240 and to write registers 40001 to 40050 with the information that master A needs



5 Monitoring The SGW1-IA3-MMP allows you to monitor communications on all four ports from the USB console. With the TRACESON command the monitoring messages are enabled. With the complementary command TRACESFULL you can have more detailed information. Activating the TRACESON command, we will see the incoming and outgoing traffic corresponding to the port activated and the ID of the target device. Then when adding the TRACESFULL command, the content of the traffic expressed in hexadecimal is added to the above information. In the following example, the TRACESON and TRACESFULL commands of ports A and C are activated:

Activation of the TRACESON and TRACESFULL commands cause process delays in the device, due to the density of information to be presented; So activating these commands slows communication between the devices.



A. Firmware Upgrade

The firmware of the device can be upgraded in case of new versions with improvements, by accessing the serial console intended for this purpose. Connect an RS232 cable such as the one between the device and a device and follow these steps

1) Open an Exemys Console terminal type program in the COM of the corresponding device and verify in the terminal that the Baudrate is in 9600. The terminal type program can be downloaded from here: http://www.exemys.com



2) Turn the SGW1-IA3-MMP on and within the first 7 seconds enter CFG and press ENTER or press the CFG button that is available. Once this is done the SGW1-IA3-MMP will display the welcome message to the configuration command console: SGW1-IA3-MMP Modbus Multiplexer-Exemys (2.0):

--------------------------------------------

>

3) Then, in the terminal go to the menu Functions -> Update Device.

4) Locate and select the binary file (.bin) to transfer and press the Open button to start updating the firmware of your device.



5) During the transfer of the file the progress of the process will be displayed.

6) At the end of the device will be restarted to install the update, preserving the configuration that was available.

Do not turn off the device once the message Verifying firmware ... is displayed, this can cause irreparable damage.



B. Factory settings

Parameter Value PPPPortsortsortsorts A, C y DA, C y DA, C y DA, C y D Mode. MASTER Priority 0[ms] Baud Rate. 9600 Data bits 8 Parity NO Stop bits 1 Modbus type RTU Exceptions Disabled Modbus RTU packet time 3[bytes Time] Over write protection Disabled PPPPortortortort BBBB Mode SLAVE Message response time 500[ms] Baud Rate. 9600 Data bits 8 Parity NO Stop bits 1 Modbus type RTU Exceptions Disabled Modbus RTU packet time 3[bytes Time] RTS RTS RTS RTS ---- PPPPortortortort AAAA –––– Device ModelDevice ModelDevice ModelDevice Model 13B013B013B013B0----00000000 RTS Logic. 1 RTS On. 0[ms] RTS Off. 0[ms] Slave TablesSlave TablesSlave TablesSlave Tables

Port Master, ID start, ID Finish, Port Slave, Offset. Port A, 1, 254, Port B, 0 Port C, 1, 254, Port B, 0 Port D, 1, 254, Port B, 0

OthersOthersOthersOthers Internal memory ID 240



C. DIN Rail mount The device can be DIN rail mounted. To attach the module to the rail, point the top of the device toward it and locate the adapter slot on its top edge. Press firmly onto the rail until it clicks into place (a click will be heard when attaching the module to the DIN rail)

Click !

Riel DINRiel DIN

VISTA LATERAL DEL EQUIPO

To remove the rail module, first remove the input terminals. Then, insert a screwdriver into the lower lock of the device's DIN connector and force the connector down until the module disengages

Riel DIN

Riel DIN

VISTA LATERAL DEL EQUIPO

SGW1-IA3-MMP – Modbus Multiplexer ExemysThe SGW1-IA3-MMP is a Modbus communications multiplexer / converter over serial ports. It allows you to connect Modbus RTU / ASCII masters

Documents