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ISA-S88 Part 5: ISA-S88 Part 5: Modular Concepts Modular Concepts for Automated for Automated Systems.Systems.

Dan SegerDan Seger

Principal Application EngineerPrincipal Application Engineer

Rockwell AutomationRockwell Automation

An Automation Federation Organization

What’s going to be covered?

• What is ISA-S88?• Why was ISA-S88 Part 5 needed?• What does it look like?• What’s the current status of development?• How do ISA-S88 Part 1, Part 5, and PackML relate to

each other.


First, a little back ground on ISA-S88

• ISA-S88 Part1: Batch Control Model.

– Defines procedural control layers, recipe and equipment separation, and equipment control models

• This is the Batch Processing View

• Batch typically has it’s complexity found here.

ControlModule

ControlModuleEquipmentProcedure Model

EquipmentProcedure Model AreaArea

ControlModule

ControlModule

EquipmentModule

EquipmentModule

ControlModule

ControlModule

Procedure Control

Process Control

ProcedureProcedure

SiteSite

AreaArea

ControlModule

ControlModule

UnitProcedure

UnitProcedure

OperationProcedure

OperationProcedure

PhaseProcedure

PhaseProcedure

Procedure Control

Control Recipe

Equipment Control



• ISA-S88 Part1: Procedural and Equipment Control Models

• This is the Discrete Processing View

• The Operations and Phase layers have collapsed as they are not needed.

• Discrete typically has it’s complexity found here.

ControlModule


EquipmentProcedure Model

AreaArea

ControlModule

ControlModule

EquipmentModule

EquipmentModule

ControlModule

ControlModule

Procedure Control

Process Control

ProcedureProcedure

SiteSiteUnitProcedure

UnitProcedure

Procedure Control

Control Recipe

Equipment Control



• As a result of ISA-S88 being a Batch focused standard, the focus is on the Procedural control and the Procedural model.

• The Process Control modules were not focused on.

ControlModule



ControlModule

ControlModule

EquipmentModule

EquipmentModule

ControlModule

ControlModule

Procedure Control

Process Control

ProcedureProcedure

SiteSite

AreaArea

ControlModule

ControlModule

UnitProcedure

UnitProcedure

OperationProcedure

OperationProcedure

PhaseProcedure

PhaseProcedure

Procedure Control

Control Recipe

Equipment Control


What is ISA-S88 Part 5: Modular Concepts for Modular Concepts for Automated Systems?Automated Systems?

• Part 5 is focused on clarifying and extending the definitions of Process control modules.

• Because these modules are important to all processing disciplines, an effort is being made to avoid making Part 5 batch processing specific. Control

Module



ControlModule

ControlModule

EquipmentModule

EquipmentModule

ControlModule

ControlModule

Procedure Control

Process Control

ProcedureProcedure

SiteSite

AreaArea

ControlModule

ControlModule

UnitProcedure

UnitProcedure

OperationProcedure

OperationProcedure

PhaseProcedure

PhaseProcedure

Procedure Control

Control Recipe

Equipment Control


What is ISA-S88 Part 5: Modular Concepts for Modular Concepts for Automated Systems?Automated Systems?

• This Part 5 standard defines the interface requirements for controlling execution of manufacturing tasks in a consistent modular fashion based on the Part 1 equipment process control concepts. A principal intent of this standard is to provide a clear hierarchical structure for defining and implementing the coordination control requirements that typically occur at the process control module level. This will provide a consistent framework for a very modular and distributed design of these functions with very predictable interactions.

• Part 5 calls this framework the Automation Module


The Part 5 Automation Module

• Resource Manager• Functional Manager• Functional Strategy

Automation Module

RM

S88Resource Requests

FM

S88 Control

Variables

S88 Command Requests

FS

CMD Requests

RM Algorithm

(Subordinate Interface)

FMAlgorithm(Variable Mapping)

RM Algorithm (Supervisory

Interface)

CTL Variables

CTL Variables

CMD Requests

88Control

Variables

S88Command Requests

FM Algorithm (Variable

Mapping & Gating)

CascadedResource Requests

Resource Requests& Status

Availability & Allocation


Strategy Algorithm

Internal Data

S88 Status

S88 Reset



• Resource Manager– The Resource Manager is

designed to regulate who is able to direct the Automation Module. Every Automation Module will have a resource (parent) that directs it. Also it could have one or more subordinate Automation Modules that it directs.

• Functional Manager• Functional Strategy

Automation Module

RM


FM

S88 Control

Variables


FS

CMD Requests

RM Algorithm




Interface)

CTL Variables

CTL Variables

CMD Requests

88Control

Variables

S88Command Requests


Mapping & Gating)





Strategy Algorithm

Internal Data

S88 Status

S88 Reset



• Resource Manager• Functional Manager

– The Functional Manager is designed to accept command and control attributes from a supervisory Automation Module. The supervisory Automation Module is determined by the Resource Manager. Only the supervisory Automation Module specified by the Resource Manager will be responded to by the Function Manager.

• Functional Strategy

Automation Module

RM


FM

S88 Control

Variables


FS

CMD Requests

RM Algorithm




Interface)

CTL Variables

CTL Variables

CMD Requests

88Control

Variables

S88Command Requests


Mapping & Gating)





Strategy Algorithm

Internal Data

S88 Status

S88 Reset



• Resource Manager• Functional Manager• Functional Strategy

– Functional Strategy implements the core Basic Control, Principle Control, or Procedural Control function of the Automation Module, resulting in command and control outputs to subordinate Automation Modules or (if executing Basic Control) physical outputs

Automation Module

RM


FM

S88 Control

Variables


FS

CMD Requests

RM Algorithm




Interface)

CTL Variables

CTL Variables

CMD Requests

88Control

Variables

S88Command Requests


Mapping & Gating)





Strategy Algorithm

Internal Data

S88 Status

S88 Reset



• The main content of the S88: Part 5 standard will be to define the complete Automation Module.

– Resource Manager

– Functional Manager

– Functional Strategies

– Create terminology and definitions for the various IO processes involved with the Automation Module.

– Examples on how to implement the Resource Manager and Functional Manager

– A specific Resource Management methodologies will be defined.

• The ultimate goal is push Object Oriented Programming (OOP) concepts into general automation programming without loosing flexibility on automation platform choice or restricting IP development.


Development Time Line

• The Part 5 working group expects to have a completed Working Draft available for review in early ’08

• Final Draft available for the ISA-S88 Committee vote in mid ’08• ISA-S88 Part 5 released as a standard in late ’08.


ISA-S88 and PackML

• What’s the relationship between ISA-S88 Part 1, Part 5, and PackML?

ControlModule



ControlModule

ControlModule

EquipmentModule

EquipmentModule

ControlModule

ControlModule

Procedure Control

Process Control

ProcedureProcedure

SiteSite

AreaArea

ControlModule

ControlModule

UnitProcedure

UnitProcedure

OperationProcedure

OperationProcedure

PhaseProcedure

PhaseProcedure

Procedure Control

Control Recipe

Equipment Control

– S88 Part 1 is focused heavily on defining what procedural control was and the interface model looked like. But…it’s very batch focused.

– S88 Part 5 is focused on addressing the definition of what the process control modules are and how to implement them.


ISA-S88 and PackML

ControlModule


EquipmentProcedure Model

AreaArea

ControlModule

ControlModule

EquipmentModule

EquipmentModule

ControlModule

ControlModule

Procedure Control

Process Control

ProcedureProcedure

SiteSiteUnitProcedure

UnitProcedure

Procedure Control

Control Recipe

Equipment Control

• What’s the relationship between ISA-S88 Part 1, Part 5, and PackML?

– PackML is focused on the equipment interface model for discrete processes .

– PackML v3 is actually an improved version of S88 Part 1’s equipment model.


ISA-S88 and PackML

• Net Result of S88 Part 1, S88 Part 5 and PackML?• A fairly complete standard for defining most processing

applications independent of processing type.


• Questions?

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