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Quantum Hot Standby
Planning and Installation Guide
840 USE 106 00 Version 4.0
31002766 02
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Table of Contents Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 About the Book . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 Chapter 1 Overview of Quantum Hot Standby . . . . . . . . . . . . . . . . . . . . .13 At a Glance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 1.1 Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Chapter 3 Theory of IEC HSBY Operation. . . . . . . . . . . . . . . . . . . . . . . . . 43 At a Glance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 IEC Hot Standby Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 How an IEC HSBY System Works. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 System Scan Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Defining the Transfer Area of State RAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 Transferring Additional State RAM Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 Scan Transfers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 6.4 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103 Introduction . . . . . . . . . . . . . . . . . . . .
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Memory Partition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153 8.2 State RAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155 Efficient Use of State RAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155 8.3 Efficiency Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157 Introduction . . . . . .
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Chapter 11 Specifications for CHS 110 Hot Standby . . . . . . . . . . . . . . . .205 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205 Appendices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207 Appendices for Quantum Hot Standby Planning and Installation Guide. . . . . . 207 Appendix A Com Act Error Patterns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .209 At a Glance
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Safety Information § Important Information NOTICE Read these instructions carefully, and look at the equipment to become familiar with the device before trying to install, operate, or maintain it. The following special messages may appear throughout this documentation or on the equipment to warn of potential hazards or to call attention to information that clarifies or simplifies a procedure. The addition of this symbol to a Danger or Warning safety label indicates that an electrical hazard
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Safety Information PLEASE NOTE Electrical equipment should be serviced only by qualified personnel. No responsi- bility is assumed by Schneider Electric for any consequences arising out of the use of this material. This document is not intended as an instruction manual for untrained persons. © 2003 Schneider Electric All Rights Reserved 10 840 USE 106 00 January 2003
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About the Book At a Glance Document Scope This manual contains complete information about programmable controller Hot Standby systems. Validity Note This documentation applies to Concept. Related Documents Title of Documentation Reference Number Quantum Automation Series Hardware Reference Guide 840 USE 100 00 Remote I/O Cable System Planning and Installation Guide 890 USE 101 00 Ladder Logic Block Library User Guide 840 USE 101 00 Modbus Plus Network Planning and Installation Guide 890 USE 1
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About the Book User Comments We welcome your comments about this document. You can reach us by e-mail at TECHCOMM@modicon.com 12 840 USE 106 00 January 2003
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Overview of Quantum Hot Standby 1 At a Glance Purpose This chapter presents a brief overview of the Hot Standby system, including a description of Primary and Standby control, components, the Hot Standby module, LEDs and switches, modes of operation, 984 and IEC HSBY, and the application size. Throughout the rest of this book the Quantum Hot Standby system is referred to as HSBY. An HSBY system is based on two identically configured programmable logic controllers linked to each other and t
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Overview of Quantum Hot Standby 14 840 USE 106 00 January 2003
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Overview of Quantum Hot Standby 1.1 Control Introduction Purpose This section describes Primary and Standby Control for a Quantum Hot Standby system. What’s in this This section contains the following topics: Section? Topic Page Primary and Standby Control 16 Hardware Components in a Quantum Hot Standby System 17 The CHS 110 Hot Standby Module 18 840 USE 106 00 January 2003 15
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Overview of Quantum Hot Standby Primary and Standby Control Description The Quantum Hot Standby system is designed for use where downtime cannot be tolerated. The system delivers high availability through redundancy. Two backplanes are configured with identical hardware and software. One of the PLCs acts as the Primary controller. It runs the application by scanning user logic and operating remote I/O. The other PLC acts as the Standby controller. The Primary controller updates the Standby c
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Overview of Quantum Hot Standby Hardware Components in a Quantum Hot Standby System Components A Quantum Hot Standby system requires two backplanes, each with at least four slots. The backplanes must be equipped with identical, compatible Quantum: l Programmable logic controller l Remote I/O head processor l CHS 110 Hot Standby module l Cables (See Fiber Optic Cable Guide, p. 213) l Power supply l Other components, (Backplanes, I/O Modules, Splitters, as required) The following illustration sho
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Overview of Quantum Hot Standby The CHS 110 Hot Standby Module Topology The following diagram shows the module’s front panel, which consists of: l LED Display l Function Keyswitch l Designation slide switch l Update Button l Fiber optic cable ports CHS 110 Front The following figure shows the module’s front panel. Panel Controls Version Label Model Number Module Desc ription Color Code LED Display Removable Door Function Keyswitch Designation Slide Switch Update Button Transmit Cable C
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Overview of Quantum Hot Standby LED Display The following illustration shows five status indicators on the face of each CHS 110 module. 140 CHS 110 00 HOT STANDBY Active Ready Fault Run Bal Low Pwr ok Modbus Com Err Modbus! Error A Com Act Error B Primary Mem Prt Standby The following table shows the five status indicators. Indicator Color Message Ready Green If steady, power is being supplied to the module and it has passed initial internal diagnostic tests. If blinking, module is trying to
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Overview of Quantum Hot Standby Function Beneath the LED display on the face of each CHS 110 control panel is a function Keyswitch keyswitch. It has three positions: Off Line, Xfer (transfer) and Run. You may use this switch to force transfer of control functions or to copy the full program from the Primary controller to the Standby. The following illustration shows a function keyswitch with three positions: Off LIne, Xfer and Run. Off Line Xfer Run Note: For security or convenience, you ca
