37 FUNCTIONS
37.4 System Consistency Check
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Execution timing
The following table shows the execution timing of the system consistency check.
*1 Checking this item can be disabled by setting "Backup Mode Setting" of "Redundant Behavior Setting". ( Page 652 Redundant
System Operation Setting)
In the following conditions, the system consistency check is not performed.
• One of the systems has not started up. (The CPU module is powered off or is reset or during an initial processing.)
• A stop error has occurred in the CPU module.
• The memory copy is being executed.
Item Execution timing
File • When both systems are simultaneously turned on or reset
• When one system is turned on or reset while waiting for the start-up of the other system
• When the standby system is turned on or reset while the control system is operating
• When the operating status of the CPU module is switched from STOP to RUN
• At END processing
• At online change completion
• At system switching
• When a tracking cable is reconnected
Operating status
*1
• When the standby system is turned on or reset while the control system is operating
• When the operating status of the CPU module is switched from STOP to RUN
• At END processing
• When a tracking cable is reconnected
Mounting status of main base unit • When both systems are simultaneously turned on or reset
• When one system is turned on or reset while waiting for the start-up of the other system
• When the standby system is turned on or reset while the control system is operating
• When a tracking cable is reconnected
SD memory card • When both systems are simultaneously turned on or reset
• When one system is turned on or reset while waiting for the start-up of the other system
• When the standby system is turned on or reset while the control system is operating
Safety operation mode
*1
• When the standby system is turned on or reset while the control system is operating
• When the operating status of the CPU module is switched from STOP to RUN
• At END processing
• When a tracking cable is reconnected
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