Mitsubishi Electric MELSEC-Q Series User Manual page 296

Error code
Description
(hexadecimal)
Setting error of the
station where the
remote device station
B124
initialization procedure
registration function is
to be performed
Remote device station
initialization procedure
B125
registration function
parameter not set
Corresponding station
B201
error during sending
B202 and B203 System error
Transient request
B204
overload error
Transient target station
B205
error
Process request error
B301
during link stop
Specified station
B302
number setting error
No station number
B303
setting error
Line test faulty station
B304
detected
294
Error cause (details)
The remote device station
initialization procedure
registration instruction was
turned on in a station other than
the master station.
The remote device station
initialization procedure
registration instruction was
turned on without setting the
remote device station
initialization procedure
registration.
A bit other than the one
corresponding to the start station
number was turned on in
Specification of remote device
station to be initialized (SW0014
to SW0017) to instruct the
remote device station
initialization procedure
registration.
A data link error has occurred in
the corresponding station during
transient transmission.

Too many transient requests
were sent to the corresponding
station.
A transient request was issued to
a station other than an intelligent
device station.
A line test request was issued
during link stop.
The destination station number of
the temporary error invalid
request or temporary error invalid
canceling request has exceeded
the maximum station number that
can communicate.
Although the temporary error
invalid request or temporary error
invalid canceling request was
issued, the target station number
has not been set.
When a line test was executed,
an error has been detected in a
remote station, intelligent device
station, or standby master
station.
Corrective action
Turn on the instruction in the
master station (station number 0).
Set the remote device station
initialization procedure
registration then turn on the
remote device station initialization
procedure registration instruction.
Turn on only the bit corresponding
to the start station number in
Specification of remote device
station to be initialized (SW0014
to SW0017).
Check the communication status
of other stations, if a temporary
error invalid station is set, or if the
corresponding station is stopped.
Please consult your local
Mitsubishi representative.
Wait for a while and send the
request again.
Change the target station.
Execute a line test while data link
is being performed.
Specify a station number smaller
than or equal to the maximum
station number.
Set the station number.
(SW0003, SW0004 to SW0007)
Check if the remote station,
intelligent device station, and
standby master station have been
started, and the cables are not
disconnected.
Delectability
Master Local
station station
×
×
×
×
×