Mitsubishi Electric MELSEC iQ-R-R00CPU, User Manual

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APPX
Appendix 4 List of Special Relay Areas
819
A
Latch area
The following is the list of special relay areas relating to the latch area.
*1 The CPU module where this function can be used supports this special relay area.
No. Name Data stored Details Set by (setting timing) CPU
SM922 Firmware update
completion with/without an
error 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 is completed with an error.
(switching to on when SD922 is 0100H to
0300H) S (Initial) Rn
*1
SM940 Operation setting of the
device test with execution
conditions Off: Registration disabled
On: Registration not
disabled
Set the operation when files relevant to the
device test with execution conditions are
changed. U Rn
*1
SM953 CPU module data backup
error check flag 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) Rn
*1
SM959 CPU module data
restoration error check flag 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) Rn
*1
SM960 Upper limit setting flag for
the number of CPU module
backup data 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 Rn
*1
SM961 Automatic backup retry
failure flag 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) Rn
*1