Memory Dump Function - Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual

Memory dump function

The following is the list of special relay areas relating to the memory dump function.
No. Name
SM1472 Memory dump in progress
SM1473 Memory dump completed
*1 The CPU module where this function can be used supports these special relay areas.
CPU module database access function
The following is the list of special relay areas relating to the CPU module database access function.
No. Name
SM1497 Memory card free space
flag for CPU module
database
SM1498 CPU module database
start-up flag
SM1499 CPU module database
start-up failure
*1 The CPU module where this function can be used supports these special relay areas.
Data stored Details
Off: Memory dump not Turns on if memory dump is in progress,
executed and turns off if memory dump is not
On: Memory dump in executed.
progress
Off: Not completed Turns on at the time when collection of the
On: Completed data and save to the SD memory card are
completed after the establishment of the
trigger condition. Thereafter, the ON state
remains even if memory dump is executed
again. If the trigger condition is established
again, On changes to Off.
Data stored Details
Off: 20MB or more free Turns on when the free space of the SD
space memory card storing the CPU module
On: Less than 20MB free database is 20MB or less.
space
Off: Before start-up Turns on only when the CPU module
On: After start-up database access function is enabled by the
module parameter setting and the database
can be accessed.
Off: Not failed Turns on only when the CPU module
On: Failed database access function is enabled by the
module parameter setting but the database
start-up is failed.
Set by (setting timing)
S (Status change)
S (Status change)
Set by (setting timing)
S (Status change)
S (Status change)
S (Status change)
Appendix 4 List of Special Relay Areas
CPU
*1
Rn
*1
Rn
CPU
*1
Rn
*1
Rn
*1
Rn
A
APPX
825