System Consistency Check - Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual

Errors during memory copy
When the memory copy is completed with an error, the MEMORY COPY LED of the control system turns off and that of the
standby system flashes (at 1s intervals). In this case, the memory copy has not been normally executed on the standby
system CPU module.
After checking the error code of memory copy stored in SD1654 (Memory copy completion status) and eliminating the error
cause, execute the memory copy again. ( Page 833 List of Special Register Areas)
37.4

System Consistency Check

This function checks whether the system configurations and files in the CPU modules are the same between the control
system and the standby system.
(1)
(3)
(4)
The following table lists the items to be checked in the system consistency check.
Number Item
in figure
(1) File
(2) Operating status
(3) Mounting status of main base unit
(4) SD memory card
(5) Mode of safety control
37 FUNCTIONS
642
37.4 System Consistency Check
(2) (5)
Description
Parameter file, program file, and other files
Operating status of CPU module (RUN/STOP/PAUSE)
CPU module and other modules mounted on the main base unit
Installing status of the SD memory card and status of the write protect
switch
Safety operation mode
(1) (2)
(3)
(4)
(5)
Reference
Page 644 File
Page 645 Operating status
Page 645 Mounting status of
main base unit
Page 646 SD memory card
Page 646 Safety operation
mode