Mitsubishi Electric MELSEC iQ-R Series - Latch Area

658
APPX
Appendix 4 List of Special Relay Areas
Latch area
The following is the list of special relay areas relating to the latch area.
*1 There are restrictions on the firmware version of the CPU module and software version of the engineering tool. ( Page 747 Added
and Enhanced Functions)
No. Name Data stored Details Set by (setting
timing)
SM922 Firmware update completion
with/without an error
*1
Off: Update completed
without an error
(including successful
completion)
On: Update completed
with an error
This relay switches to on when the firmware update function
(firmware update using an SD memory card) is completed
with an error. (switching to on when SD922 is 0100H to
0300H)
S (Initial)
SM940 Operation setting of the
device test with execution
conditions
*1
Off: Registration disabled
On: Registration not
disabled
Set the operation when files relevant to the device test with
execution conditions are changed.
U
SM953 CPU module data backup
error check flag
*1
Off: No error
On: Error
• This relay turns on if an error occurs at the execution of
backup of the CPU module.
• This relay turns off at the start of the CPU module data
backup.
S (Status change)
SM959 CPU module data restoration
error check flag
*1
Off: No error
On: Error
• This relay turns on if an error occurs at the execution of
restoration of the CPU module.
• This relay turns off at the start of restoration of the CPU
module.
S (Status change)
SM960 Upper limit setting flag for the
number of CPU module
backup data
*1
Off: Backup continued
On: Backup stopped
This relay specifies the operation of backup when the number
of backup data of the CPU module reaches the upper limit.
(This relay is valid only when bit 5 of SD944 is on.)
Off: After deleting the oldest date stamp folder, the backup
is continued.
On: The backup is not continued if the upper limit of the
number of backup data is exceeded. (In this case, the
backup is completed with an error.)
U
SM961 Automatic backup retry
failure flag
*1
Off: Retry not executed/
Retry being executed
On: Retry failed
This relay turns on when the retry of the automatic backup of
the CPU module is failed even after the specified number of
retries are attempted. This relay turns off at the start of the
automatic backup. (This relay does not turn off when SM1351
is on.)
S (Status change)