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Error code
Error details
(hexadecimal)
Corresponding station error
B201
during sending
B202 to
System error
B203
Transient request overload
B204
error
Transient target station
B205
error
Processing request error
B301
during link stop
Specified station number
B302
setting error
Specified station number
B303
not set error
Loop test error station
B304
detected
B305
System error
Specified station number
B306
setting error
B307
All stations data link error
Station number setting error
B308
(installation status)
Station number overlap
B309
error
Loading/parameter
B30A
consistency error
Cause of error occurrence (details)
A data link error occurred at the
corresponding station during transient
transmission.
Too many transient requests were sent to the
corresponding station.
A transient request was issued to other than
the intelligent device station.
Loop test request was issued while the link
was stopped.
The specified station number exceeded the
highest communication station number
during temporary error invalid
request/temporary error invalid cancel
request.
The station number was not specified during
temporary error invalid request/temporary
error invalid cancel request.
An error was detected in a remote station,
intelligent device station or standby master
station when a loop test was performed.
A station number other than the head station
number was specified during temporary error
invalid request/temporary error invalid cancel
request.
All stations were in data link error status
when one of the following requests was
made:
• Data link restart (SB0000)
• Data link stop (SB0002)
The station number of the device station is
not within 1 to 64.
The station number of the connected module
was duplicated (including number of
occupied stations).
However, this excludes the duplicate head
station number.
The station types of the module are different
from parameter settings.
Connected
Parameter
module
setting
Remote
Example)
Remote I/O
device
Remote I/O
Intelligent
Remote
device
device
The mode is inconsistent between the
master station and a local or standby master
station.
• The modes of the master station and
standby master station are different.
CHAPTER 15 TROUBLESHOOTING
Corrective action
Check the communication status of
other stations, whether or not a
temporary error invalid station is
specified, or if the corresponding
station is stopped.
Please consult your local Mitsubishi
representative.
Wait for a while and send the
request again.
Check the target station.
Perform a loop test while the link is
being established
Specify a station number that is no
greater than the highest
communication station number.
Set a specified station number.
(SW0003, SW0004 to SW0007)
Check that the remote station,
intelligent device station or standby
master station is operational and that
the cable is not disconnected.
Please consult your local Mitsubishi
representative.
Specify a head station when
temporary error invalid
request/temporary error invalid
cancel request is requested.
Request again after the data link
becomes normal.
Set the station number of the device
station within the range between "1
and 64".
Check the module station number.
Set the correct parameters.
After correcting the parameters of
the master station, the local station,
or standby master station, reset the
CPU module.
Detectability
Master
Local
station
station
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Table of Contents
Troubleshooting
