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OPEN DISTRIBUTED AUTOMATION AND CONTROL WITH IEC 61499 Open OpenDistributed DistributedAutomation Automationand andControl Control with withIEC IEC61499 61499 presented at: IEC Workshop on Automation Objects Geneva, Switzerland 2001-04-03 by: JAMES H. CHRISTENSEN , Ph.D. Senior Principal Engineer Rockwell Automation JHChristensen@ra.rockwell.com JHC/2001-04-03 p. 1 OPEN DISTRIBUTED AUTOMATION AND CONTROL WITH IEC 61499 Open OpenDistributed DistributedAutomation Automationand andControl Control with withIEC IEC61499 61499 • • • • • JHC/2001-04-03 p. 2 Background Architecture Object Models Software Tool Requirements Status and Future OPEN DISTRIBUTED AUTOMATION AND CONTROL WITH IEC 61499 Centralized Programmable Configurable PLC IEC 61131-3 Thesis Distributed DistributedAutomation: Automation: An AnArchitectural ArchitecturalDialectic Dialectic agility distributability Function Blocks IEC 61499 Synthesis Antithesis DCS IEC 61804 Distributed Configurable JHC/2001-04-03 p. 3 programmability agility Agile Manufacturing agility distributability configurability programmability OPEN DISTRIBUTED AUTOMATION AND CONTROL WITH IEC 61499 IEC IEC61131-3: 61131-3:Modern Modern(1993) (1993)Software Software Engineering Engineeringfor forAutomation Automationand andControl Control • Encapsulation/Reuse Mechanisms – Function Blocks, Functions, Data Types, Programs • Application-adapted Languages – – – – – Ladder Diagram (LD) for logic control (“power flow”) Function Block Diagram (FBD) for regulatory control (“data flow”) Sequential Function Chart (SFC) for state-machine control Structured Text (ST) for information processing Instruction List (IL) for assembly-level programming • A Mature, Internationally Adopted Standard – First edition: 1993 – Second edition: 2001 JHC/2001-04-03 p. 4 OPEN DISTRIBUTED AUTOMATION AND CONTROL WITH IEC 61499 Function FunctionBlocks: Blocks:Object-Oriented Object-Oriented Encapsulation Encapsulationand andReuse Reusein inIEC IEC61131-3 61131-3 BOOL DEBOUNCE IN OUT TIME DB_TIME BOOL External Interface Specification Control Algorithm Specification ON_TMR OFF_TMR TON IN IN Q IN DB_FF PT ET SR OFF_TMR TON IN DB_TIME JHC/2001-04-03 p. 5 Q PT ET S1 Q1 TON |/| IN DB_TIME PT ET Q OUT (R) OUT ON_TMR R IN TON || IN DB_TIME PT ET Q OUT (S) OPEN DISTRIBUTED AUTOMATION AND CONTROL WITH IEC 61499 Centralized CentralizedSystem SystemConfiguration Configurationin inIEC IEC61131-3 61131-3 CONFIGURATION RESOURCE TASK PROGRAM RESOURCE TASK PROGRAM FB TASK PROGRAM PROGRAM FB FB GLOBAL and DIRECTLY REPRESENTED VARIABLES ACCESS PATHS Communication function JHC/2001-04-03 p. 6 TASK FB OPEN DISTRIBUTED AUTOMATION AND CONTROL WITH IEC 61499 Distributed DistributedConfiguration Configurationin inFieldbus FieldbusSystems Systems (Physical (PhysicalView) View) H1 Fieldbus Segment # 3 Control Room PC H1 Fieldbus Segment # 2 Green Liquor Storage Re-Burned Purchased Lime Lime DT 109 LT 101 19 SC 111 24 20 IP 102 FT 102 IP 104A Heater AT 103 H1 Fieldbus Segment # 1 JHC/2001-04-03 p. 7 LT 112 LT 111 CV-101 A/O FT 110 SC 110 23 SC 112 25 IP 104B Cooler 21 TT 104 TT 105 AT 106 AT 107A AT 107B LT 108 SC 108 22 OPEN DISTRIBUTED AUTOMATION AND CONTROL WITH IEC 61499 Distributed DistributedConfiguration Configurationin inFieldbus FieldbusSystems Systems (Logical (LogicalView) View) AI ISEL AT107B HS107 AI AT107A PID AI AIC107 LL AT103 PID AI AIC106 AT106 AY103 RATIO AO FRC103 SC103 AI PID AO FT102 FIC102 IP102 AC 106 AIC 107 FRC 103 FIC 102 FT 102 SC 103 IP 102 CV-102 A/O AY 103 AT 103 HS 107 AT 106 AT 107A AT 107B Conductivity JHC/2001-04-03 p. 8 OPEN DISTRIBUTED AUTOMATION AND CONTROL WITH IEC 61499 Basic Basic Concepts Concepts of of IEC IEC 61499 61499 • Distributed applications • Object-oriented software encapsulation and reuse • Event and data interfaces • Event-driven state machines • Service interfaces • Management services • Software portability JHC/2001-04-03 p. 9 OPEN DISTRIBUTED AUTOMATION AND CONTROL WITH IEC 61499 System SystemArchitecture Architecturefor forDistributed DistributedApplications Applications Event flow Data flow Communication network(s) Device 1 Device 2 Device 3 Device 4 Application A Appl. C Application B Controlled process JHC/2001-04-03 p. 10