Mitsubishi Electric MELSEC iQ-R Series User Manual page 54

System consistency check of files
The files for operating the redundant system are checked.
■Target file
The following is a list of files to be checked for system consistency.
Target file
CPU parameter
System parameter
Module parameter
Module extension parameter
*2
Device comment
Global label setting file
Initial global label value file
Remote password
*1 Only the parameter files of the mounted modules are checked. A module for which "Module Status Setting (Empty)" is selected in the
"Module Configuration" window of the engineering tool is not treated as a check target.
*2 Only files with the name COMMENT.DCM are checked for system consistency.
■Operations when a mismatch is occurred
After the memory copy is executed from the control system to the standby system, the standby system is automatically reset
and restarted.
System consistency check of operating status
Because the same operations cannot continue after system switching if the operating statuses of the remote head modules of
both systems are not the same, whether the operating statuses (RUN state/STOP state) match is checked.
■Description
Whether the operating statuses of the remote head modules (RUN state/STOP state) are the same is checked.
■Operations when a mismatch is occurred
When the operating statuses (RUN state/STOP state) do not match, system switching is not be possible.
The CTRL LED of the remote head module flashes because system switching is not possible.
Match the operating statuses of both systems (RUN state/STOP state). ( Page 91 When the CTRL LED is flashing)
1 FUNCTIONS
52
1.8 Redundant Function
*1