Mitsubishi MELSEC Q Series - Page 1201

App-193
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Appendix3 SPECIAL RELAY LIST
(17) Data logging
Number
Name Meaning Explanation
Set by
(When Set)
Corres-
ponding
ACPU
M9
Corresponding
CPU
SM1940
Data logging
setting No.1
Data logging
preparation
OFF : Not ready
ON : Ready
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.
S
(Initial)
New LCPU
SM1941
Data logging
setting No.1
Data logging start
OFF : Pause
ON : Start
This relay is turned on to start data logging
and is turned off to suspend data logging.
(The related special relays will all turn off.)
U
SM1942
Data logging
setting No.1
Data logging
execution
OFF : Not executed
ON : Executed
This relay is on while data logging is being
executed.
S
(Status
change)
SM1943
Data logging
setting No.1
Data logging end
OFF : Not ended
ON : Ended
This relay turns on when data logging is
ended.
[Continuous is set for Logging type]
The corresponding bit turns on when data
logging is ended after data have been written
by the number of storable files (Stop is set for
Operation occurring when number of saved
files is exceeded).
[Trigger is set for Logging type]
The corresponding bit turns on when the
trigger condition is met, data are collected by
the number of set times, and then the data
are written to the SD memory card.
This relay also turns on if an error occurs
during data logging (except data logging error
occurred by the execution of online change).
SM1944
Data logging
setting No.1
Data logging
trigger
OFF→ON: Triggered
• This relay turns on when the specified
trigger condition is met.
• This relay is turned on to meet the trigger
condition.
S
(Status
change)/U
SM1945
Data logging
setting No.1
After data logging
trigger
OFF : Not triggered
ON : Triggered
This relay turns on after trigger logging is
triggered. This relay remains on even after
data logging is completed. This relay turns off
when trigger logging is suspended or
stopped.
S
(Status
change)
SM1946
Data logging
setting No.1
Data logging error
OFF : No error
ON : Error
This relay turns on if a data logging error
occurs.
This relay is turned off by the registration of
the setting or a stop command from LCPU
Logging Configuration Tool.
S
(Error)
SM1947
Data logging
setting No.1 Data
storage in SD
memory card
OFF : Not stored
ON : Being stored
This relay is on while buffer memory data are
being stored to a SD memory card by data
logging.
S
(Status
change)