16 Troubleshooting
16.3 Troubleshooting by Error Code
244
FX3U-16CCL-M User's Manual
B778 Response time out
A response was not received from the requested
station.
Check the requested unit and
cables.
B782
Station number specification
error
The transmission destination and source stations
were the same when other station connection was
specified.
Check the transmission destination
station number, or change to master
connection.
BA19
Error in corresponding
station
In the line test, communication was disabled in the
tested station.
Check the corresponding station and
cables.
BA1B Error in all stations
In the line test 1, communication was disabled in all
stations.
Check the cables.
BBC1
Transmission rate setting
switch error
A transmission rate setting switch is not set within the
appropriate range.
Review the Transmission rate setting
switch.
BBC2 Station number setting error
The station number switch setting of the unit is set to a
value other than "0 to 16".
Check the station number.
BBC5 Master station overlap error Multiple master stations exist on the same line.
Reduce the number of master
stations on the same line to one.
Also, check the line status.
4B03 Corresponding related error
• The specified route is not supported by the
specified main unit version.
• The communication target main unit is not
mounted.
Check whether the specified route is
supported.
Error
code
(Hex.)
Error definition The cause of the error occurrence (details) Error corrective action
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