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· Operation condition monitor flag [2]
This flag is used to monitor the abnormal stop of each slave station when the communication with
each slave station is normal.
Non-connected station keeps this flag as “OFF.”
Even if a master station PC has stopped operation normally or by an error, the JW-20CM
turns “ON” this flag while communicating.
Flag operation
Own
station flag
(master
station)
Communication monitor flag (1) of the master station is turned “OFF.”
Communication monitor flag (1) of the master station is turned “ON.”
Condition for flag operation
Flag
Not specified
All slave
stations
Specific
slave
station
Flag operation
Other
station’s
flag
(01 to 77)
OFF
Flag
Condition for flag operation
Slave station that communication monitor flag (1) is
turned to “OFF.”
Communication monitor flag (1) of the master station
is turned “OFF.”
Each slave station is normal.
Any of the slave stations is faulty (caused to be
stopped abnormally).
ON
ON
OFF