Mitsubishi Electric MELSEC-A Series Manual page 103

2
REPLACEMENT OF MELSECNET (II) AND /B (PLC TO PLC NETWORK)
Special relay in the case of MELSECNET (II) local
Number Name
Master station
M9253
operation status
Operating status of
M9254
other local stations
Local station error
M9255 on stations other
than host station
station
Description Number
OFF : RUN or STEP
RUN status SW0084 to
ON : STOP or PAUSE SW0087
status
OFF : RUN or STEP
RUN status
SB0084
ON : STOP or PAUSE
status
OFF : Normal
SB0074
ON : Abnormal
: Compatible,
MELSECNET/H special relay
Name Description
Stores the CPU
Each station CPU
RUN status of each
RUN status
station.
OFF : All stations
RUN or STEP
RUN status
Each station CPU
ON : Stations in the
RUN status
STOP or
PAUSE status
exist
OFF : All stations
normal
ON : Station where
Cyclic transmission
cyclic
status of each
transmission
station
is not
executing
exist
: Partial change required, × : Incompatible
Compat- Precautions for
ibility replacement
When the
MELSECNET II master
station is the
MELSECNET/H
specified control
station, the operation
status is distinguished
by the corresponding
bit of the control station
specified on SW0084 to
SW0087.
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