Mitsubishi Electric MELSEC-Q Series User Manual page 311

Error code
Description
(hexadecimal)
Target station
specification error
BC73
(remote device station
access)
Device number error
BC74 (remote device station
access)
Data link error in all
BC75 stations (remote
device station access)
Time check over
BC76 (remote device station
access)
BC81 System error
Message transmission
result read target
BC90
module station number
error
Message transmission
BC91 response receive
timeout error
BD83 to BD84 System error
Hardware error
BD85
detection
BD86 and BD87
BF11 to BF1C
System error
BF20
BF30 to BF37
Execution result read
BF38 error (remote device
station access)
Request procedure
BF39 error (remote device
station access)
BF40 to BF42 System error
Error cause (details)
The remote device station to be
accessed from the peripherals is
a remote I/O station.
The specified device (RX, RY,
RWw, or RWr) number is outside
the device range for the
connected target station.
A data link error has occurred in
all stations during access from
the peripherals to the remote
device station.
Time check over has occurred
during access from the
peripherals to the remote device
station.

The message transmission result
read request was received from
the station with an unacceptable
target station number.
Timeout occurred in receiving
message transmission response
data.

A hardware error has been
detected.

An error has been detected in
reading the execution result in
access from the peripherals to
the remote device station.
An error has been detected in the
request procedure in access from
the peripherals to the remote
device station.

CHAPTER 11 TROUBLESHOOTING
Corrective action
Check the station number and
station type of the specified target
station.
Check the parameters and the
device range of the target station.
Start the data link then issue the
request.
Increase the time check time in
the application of the request
source, or check operations of the
target slave station.
Please consult your local
Mitsubishi representative.
Correct the station number of the
target station at the request
source, and execute the function
again.
Set a longer Monitoring time
setting (SW0009) and execute the
function again. If the same error
occurs again, check the target
station and cables.
Please consult your local
Mitsubishi representative.
Please consult your local
Mitsubishi representative.
Please consult your local
Mitsubishi representative.
• Check the application of the
request source.
• Check if another peripheral is
not accessing the remote
device station.
• Check the application of the
request source.
• Check if multiple peripherals
are not accessing the remote
device station.
• Check if a value is not written in
the system area in the buffer
memory.
Please consult your local
Mitsubishi representative.
Delectability
Master Local
station station
×
11
×
×
×
×
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