Mitsubishi Q12PRHCPU - Page 131

5
REDUNDANT SYSTEM FUNCTIONS
5.3 The System Switching Function
5.3.3 System Switching Execution Possibility
5 - 48
1
OVERVIEW
2
SYSTEM CONFIGURATION
3
TRACKING CABLE
4
PROCEDURE FOR STARTING UP A REDUNDANT SYSTEM
5
REDUNDANT SYSTEM FUNCTIONS
6
REDUNDANT SYSTEM NETWORKS
7
PROGRAMMING CAUTIONS
8
TROUBLESHOOTING
Table5.32 When System Switching Cannot Be Executed Due to Watchdog Timer Error of Standby System
System
Switching
Method
Control System
Switching Condition
Status Before System
Switching
System Status After
System Switching
Condition
Operation After System B Power
OFF ON
System A System B System A System B
Automatic
System
Switching
Stop Error Other Than
Watchdog Timer Errors
Control
System
Standby
System
Standby
System
Control
System
Startup as standby system
Watchdog Timer
Control
System
Standby
System
Standby
System
Standby
System
Startup as control system
Hardware Failure
Control
System
Standby
System
Standby
System
Control
System
Startup as control system
Power OFF
Control
System
Standby
System
Standby
System
Control
System
Startup as control system
Reseting
Control
System
Standby
System
Standby
System
Control
System
Startup as control system
System Switching
Request by Network
Module
Control
System
Standby
System
Control
System
Standby
System
System switching will cause system B to
become control system
Manual
System
Switching
System Switching
Using GX Developer
Control
System
Standby
System
Control
System
Standby
System
Startup as standby system
System Switching by
System Switching
Instruction
Control
System
Standby
System
Control
System
Standby
System
Startup as standby system