Mitsubishi Electric Q26UD(E)HCPU User Manual page 505

(22)CPU module data backup/restoration function
Number Name
OFF: Not being
Backup status
SM1925
flag
ON: Being executed
Backup
OFF: Not requested
SM1926 execution
ON: Requested
request
OFF: Not being
Restoration
SM1928
status flag
ON: Being executed
Restoration
OFF: Not requested
SM1929 execution
ON: Requested
request
Retry status flag OFF: Not being
SM1931 for automatic
backup ON: Being executed
*1 Modules whose serial number (first five digits) is "17103" or later
*2 Modules whose serial number (first five digits) is "18052" or later
(23)Data logging
Number Name
Data logging
OFF: Not restarted
SM1938 restart flag at
ON: Restarted
error stop
Data logging
setting No.1 OFF: Not ready
SM1940
Data logging ON: Ready
preparation
Data logging
OFF: Pause
SM1941 setting No.1
ON: Start
Data logging start
Data logging
OFF: Not being
setting No.1
SM1942
Data logging
ON: Being collected
collection
Meaning
This relay turns on during execution of
executed
backup.
If this relay is turned off and then on, backup
execution request is issued when the END
processing of the scan is executed. This
relay is turned off by the system after the
backup is completed.
This relay turns on during execution of
executed
restoration
If this relay is turned off and then on when the
CPU module is in STOP state, restoration
execution request is issued. This relay is
turned off by the system after the restoration
is completed.
This relay turns on during the retry of the
automatic backup. (This relay turns on at the
start of the retry, and turns off when the
executed automatic backup is triggered by the retry
while the exclusive functions are not
executed, or when the specified number of
retries are attempted.)
Meaning
When SM960 (Data logging error check flag)
is ON, the data logging is restarted by turning
off and then on this relay. This relay is turned
off when the CPU module is powered off and
then on or is reset.
This relay turns on when the system is ready
for data logging.
This relay remains on even after data logging
is suspended. However, this relay turns off
when data logging is stopped.
This relay is turned on to start data logging
while the CPU module is set to RUN and is
turned off to suspend data logging. (The
related special relays will all turn off.)
Even if this relay is turned on while the CPU
module is set to STOP, data logging will not
be started.
This relay is on while data logging is being
collected
collected.
Set by
Explanation
(When Set)
S (Status
change)
S (Status
change)/U
S (Status
change)
S (Status
change)/U
S (Status
change)
Set by
Explanation
(When Set)
S (Initial)
S (Status
change)/U
S (Status
change)
APPENDICES
Corresponding
Corresponding
ACPU
CPU
M9
New
QnUDV
New
QnUDV
New
QnUDV
New
QnUDV
New
QnUDV
Corresponding
Corresponding
ACPU
CPU
M9
QnUDV
U New
LCPU
QnUDV
New
LCPU
QnUDV
New
LCPU
QnUDV
New
LCPU
A
*1
*1
*1
*1
*2
*2
*3
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