Mitsubishi Electric MELSEC iQ-R-R00CPU, User Manual

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28 FUNCTIONS
28.5 System Consistency Check
477
28
File
Whether both systems have the same files is checked.
The following table shows whether or not to perform the check on each file type.

: Checked,

: Not checked,

: Storage not possible
*1 The reserved area for online change and program restoration information write status are also checked. (

Page 106 Configuration of
a program file, Page 942 Program Restoration Information Write Selection)
*2 Whether a file is stored or not is checked. The file contents are not checked.
*3 The file will not be checked at the timing on when SD memory cards are inserted during operation.
Operation of when a mismatch is detected
If a mismatch between the files is detected, a stop error occurs on the standby system CPU module.
Set the CPU modules of both systems to have the same files with either of the following methods.
• Writing files to both systems
• Executing the memory copy from the control system to the standby system for storing the same files in both systems (

Page 468 Memory Copy from Control System to Standby System)
File type Check target memory
Built-in memory of CPU
module SD memory card
*3
Program
*1
 
FB file
*1
 
CPU parameter
 
System parameter
 
Module parameter
 
Module extension parameter  
Module-specific backup parameter
 
Memory card parameter
 
Device comment
 
Initial device value  
Global label setting file  
Initial label value file Initial global label value file
 
Initial local label value file
 
File register
*2
 
Event history
 
Device data storage file
 
General-purpose data
 
Data logging setting file Common setting file  
Individual setting file
 
Remote password
 