Allen-Bradley GuardPLC 1753, Safety Reference Manual

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6 Publication 1753-RM002C-EN-P - September 2008
Table of Contents
Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Reaction Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Connection Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
DeviceNet Scanner Configuration Checklist . . . . . . . . . . . . . 63
Chapter 6
DeviceNet Safety I/O for the
GuardPLC Control System
Chapter Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Typical Safety Functions of DeviceNet Safety I/O Modules . . 68
Safety Considerations for I/O Module Replacement . . . . . . 72
Safety-lock with Password Protection . . . . . . . . . . . . . . . . . . 72
Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Reaction Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Checklist for DeviceNet Safety I/O Modules . . . . . . . . . . . . . 74
Chapter 7
GuardPLC Controller Operating
System
Chapter Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Software for GuardPLC Controllers and I/O Modules . . . . . . 75
Technical Safety for the Operating System . . . . . . . . . . . . . . 77
Operating Mode and Functions of the Operating System. . . . 77
Technical Safety for Programming . . . . . . . . . . . . . . . . . . . . 77
Parameters of the Automation System . . . . . . . . . . . . . . . . . 80
Forcing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Protection Against Manipulation . . . . . . . . . . . . . . . . . . . . . 82
Checklist for the Creation of an Application Program . . . . . . 83
Chapter 8
Technical Safety for the
Application Program
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
General Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Basis of Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Variable Declaration and I/O Naming . . . . . . . . . . . . . . . . . 87
Functions of the Application Program . . . . . . . . . . . . . . . . . 89
Program Documentation for Safety Applications . . . . . . . . . . 95
Considerations for DeviceNet Safety Data. . . . . . . . . . . . . . . 95
Chapter 9
Configuring Communication
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Standard Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Peer-to-peer Safety Communication via GuardPLC Ethernet . 98
High-speed Safety Protocol . . . . . . . . . . . . . . . . . . . . . . . . 102
Reaction Times for DeviceNet Safety Communication . . . . . 103