Main
Page
Table of Contents
Chapter 2 Theory of 984 Ladder Logic HSBY Operation . . . . . . . . . . . . .31
Chapter 3 Theory of IEC HSBY Operation. . . . . . . . . . . . . . . . . . . . . . . . . 43
Chapter 4 Planning a Quantum Hot Standby System . . . . . . . . . . . . . . . 55
Chapter 6 Using a Quantum 984 HSBY System . . . . . . . . . . . . . . . . . . . . 67
Chapter 7 Using a Quantum IEC Hot Standby System . . . . . . . . . . . . .109
Chapter 8 Additional Guidelines for IEC Hot Standby . . . . . . . . . . . . . .147
Chapter 9 Ethernet Hot Standby Solution. . . . . . . . . . . . . . . . . . . . . . . . 163
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
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Safety Information
Important Information
DANGER WARNING
CAUTION
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About the Book
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Overview of Quantum Hot
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1.1 Control
Primary and Standby Control
Hardware Components in a Quantum Hot Standby System
Fiber Optic Cable Guide, p. 213
The CHS 110 Hot Standby Module
Com Act Error Patterns, p.209
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1.2 Operation
Modes of Operation
Replacement, p.192
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1.3 Cabling
Fiber Optic Cable
The CHS 210 Hot Standby Kit
1.4 984 HSBY and IEC HSBY
984 HSBY
Using a Quantum 984 HSBY System, p. 67
Replacement, p.192
IEC HSBY
Using a Quantum IEC Hot Standby System , p.109
Updating PLC System Executives in an IEC HSBY System, p.200
Quantum IEC Hot Standby Architecture
PRIMARY SECONDARY REMOTE I/O
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Theory of 984 Ladder Logic HSBY Operation
How a 984 HSBY System Works
System Scan Time
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PLC Scan Times, p.34
The State RAM Transfer and Scan Time
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Default Transfer Area
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Customizing Options
Additional Guidelines for IEC Hot Standby , p.147
Custom Scans
up using multiple scans to transfer all the data.
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Theory of IEC HSBY Operation
IEC Hot Standby Definitions
All State RAM transferred, p.52
How an IEC HSBY System Works
System Scan Time
Page
Page
Overall PLC Scan Time, p.49
State Ram Transfer and Scan Time
Section Transfer Control, p.135
All State RAM transferred The following diagram shows the state RAM transfer area.
Layout of completely transferred state RAM in an IEC Hot Standby system
Page
Planning a Quantum Hot Standby System
Guidelines for Planning a Hot Standby System
Electrical Safety Precautions
Remote I/O Cable Topologies
Remote I/O Cable System Planning and Installation Guide,
A Dual Cable Configuration, p. 60
A Single Cable Configuration, p.59
A Single Cable Configuration
Diagram of a Single Cable
The following diagram shows a single cable configuration for the Quantum Hot Standby system.
A Dual Cable Configuration
Diagram of a Dual Cable
The following diagram shows a dual cable c o nfiguration for the Quantum Hot Standby system.
Installation
How to Install a Hot Standby System
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Page
Page
Page
Page
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6.1 Configuration
Configuring 984 HSBY
Modicon Quantum Hot Standby System Planning and Installation Guide
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Configuration Extension
CHS Instruction
Ladder Logic Block Library User Guide
6.2 Using the CHS Instruction Block
Using CHS Instruction Block
Command Register
Default Transfer Area, p.38
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Elements of the Nontransfer Area
Nontransfer Area
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The Hot Standby Status Register
The Reverse Transfer Registers
Reverse Transfer Logic Example
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6.3 Using Configuration Extension
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Hot Standby Dialog
Bits in the Hot Standby Command Register
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Keyswitch Override and Run Mode
A Software Control Example
Standby on Logic Mismatches
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Transfer All State RAM
Hot Standby Status Register for Configuration Extension
Advanced Options
Defining the Transfer Area of State RAM
System Scan Time, p.33
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Transferring Additional State RAM Data
Using a Quantum 984 HSBY System
Additional Data The diagram below illustrates transfer of additional State RAM data.
Scan Transfers
6.4 Operation
Starting Your Hot Standby System
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Synchronizing Time-of-Day Clocks
The following diagram shows synchronizing time-of-day clocks.
While Your System Is Running
Using a Quantum IEC Hot Standby System
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7.1 Configuration
Loading the Software
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Controlling the Hot Standby System by Configuration Extension
Loading the Software, p.112
7.2 Hot Standby Dialog
Hot Standby dialog
Concept 2.5 shown
Standby.
Specifying the Command Register
Hot Standby Command Register
Enable Keyswitch Override
Options for Software Control Example
Option 1
Option 2
Advanced Options Concept 2.5
WARNING!!
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Standby on Logic Mismatch
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State RAM, p. 129
Swapping Addresses at Switchover
State RAM, p. 129
7.3 State RAM
Nontransfer Area of State RAM
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Hot Standby Status Register
Memory Partition
State RAM, p.155
State RAM Size
7.4 Section Transfer Control
Section Transfer Control
Normal Operation, p. 140
Additional Guidelines for IEC Hot Standby , p.147
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Select Component of Type BOOL
OK Cancel Help
Components
LD1: SECT CTRL disable: BOOL hsby State: BYTE
7.5 Operation
Starting Your Hot Standby System
Start Standby The following table shows the steps to starting Standby.
140 CHS 110 00
140
CHS 110 00
RIO Head
7.6 Normal Operation
Memory/Scantime optimization
Additional Guidelines for IEC Hot Standby , p.147
A screenshot of the Memory Prediction dialog is shown below.
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Synchronizing Time of Day Clocks
While Your System Is Running
Additional Guidelines for IEC Hot Standby
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8.1 General Application Requirements
Memory Savings
Memory Statistics
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Memory Partition
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8.2 State RAM
Efficient Use of State RAM
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8.3 Efficiency Tips
Use Constants Instead of Equal Literals
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Programmed Logic
Reduce the Use Of Complex Data Structures
Ethernet Hot Standby Solution
Overview of Hot Standby Solution for NOEs
Quantum NOE 771 xx Ethernet Modules User Guide
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Hot Standby Topology
NOE Configuration and Hot Standby
IP Address Assignment
NOE Operating Modes and Hot Standby
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Page
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Address Swap Times
Quantum NOE 771 xx Ethernet Modules User Guide
Network Effects of Hot Standby Solution
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Maintenance
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10.1 Health of a Hot Standby System
Verifying Health of a Hot Standby System
Additional Checks
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10.2 Errors
Startup Errors
Quantum Automation Series Hardware Reference Guide
Communications Errors
Com Act Error Patterns, p.209
Board Level Errors
10.3 Failures
Detecting Failures in a Hot Standby System
Detecting Failures in the Primary Backplane
Standby module and RIO head to the chart below:
Com Act Error Patterns, p. 209
Com Act Error Patterns, p.209
Com Act Error Patterns, p. 209
Detecting Failures in the Standby Backplane
Standby module and RIO head to the chart below.
Failure of Fiber Link from Primary Transmit to Standby Receiver
10.4 Replacement
Replacing a Hot Standby Module
Changing the Program and Performing a Program Update
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Page
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Updating PLC System Executives in a 984 HSBY System
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Updating PLC System Executives in an IEC HSBY System
10.5 Testing
Forcing a Switchover
Primary Standby
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Specifications for CHS 110 Hot
Specifications
Specifications for CHS 110 Hot Standby
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Appendices
Appendices for Quantum Hot Standby Planning and Installation Guide
Page
A
Com Act Error Patterns
CHS 110 Hot Standby Module Error Patterns
type of error and the codes possible for that group (all codes are in hex).
CRP Remote I/O Head Processor Error Patterns
Error Patterns The following table shows error patterns.
Page
B
Fiber Optic Cable Guide
Fiber Optic Cable
Other Tools Suggested Tools include:
Other Tools
Other Tools Suggested tools include
C
ProWORX Nxt Configuration
ProWORX Nxt Hot Standby Configuration Extension
Configuration Extensions Dialog Screen
<Hot Standby (Quantum)> dialog screen
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Registers dialog screen:
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C
B A
Index
Numerics
A
C
H
I
K
L
M
T
