10 TROUBLESHOOTING
10.5 List of Error Codes
241
10
D65AH Parameter error (maximum number of
connectable stations)
• Parameters are set over the maximum number of connectable
stations. Correct the network parameters so that the number of
device stations is 60 or less, then write the parameters to the CPU
module again. Note that a PDO-mapped extension module (for
example, a multi-axis servo amplifier) to which a station number is
not set is counted as one station.
• If the error occurs again even after taking the above, please
consult your local Mitsubishi representative.
D65BH Parameter error (CC-Link IE TSN Class) • Write the network parameter to the CPU module again.
• Execute the instruction again after correcting "CC-Link IE TSN
Class" in the setting data.
• If the error occurs again even after taking the above, please
consult your local Mitsubishi representative.
D65CH Parameter error (TSN hub setting) • Write the network parameter to the CPU module again.
• Execute the instruction again after correcting "TSN HUB Setting" in
the setting data.
• If the error occurs again even after taking the above, please
consult your local Mitsubishi representative.
D65DH Parameter error (multiple period setting) • Write the network parameter to the CPU module again.
• Execute the instruction again after correcting "Multiple Period
Setting" in the setting data.
• If the error occurs again even after taking the above, please
consult your local Mitsubishi representative.
D720H
to
D725H
System error Please consult your local Mitsubishi representative.
D727H
to
D729H
System error Please consult your local Mitsubishi representative.
D731H System error Please consult your local Mitsubishi representative.
D742H System error Please consult your local Mitsubishi representative.
D840H Number of transient requests exceeded the upper
limit of simultaneously processable requests.
• Pause the transient transmission temporarily, and retry the
operation.
• Lower the transient transmission usage frequency, and retry the
operation.
D841H The request data size of memory read/write
command is out of range.
Correct the read or write size specification at the transient request
source, and retry the operation.
D842H System error Please consult your local Mitsubishi representative.
D843H The module operation mode is set to a mode in
which transient transmission cannot be executed.
After completion of the module communication test, retry the
transient transmission.
D844H Incorrect frame was received.
• Unsupported pre-conversion protocol
• Unsupported frame type
• Application header variable part
• Application header HDS
• Application header RTP
• Read command not requiring response
Correct the request data at the transient request source, and retry the
operation.
D902H The online test data is incorrect. • Correct the data at the station that started the online test, and retry
the operation.
• If the error occurs again even after taking the above, please
consult your local Mitsubishi representative.
D903H During execution of the communication test, the
test was retried.
After completion of the communication test, retry the operation.
D905H A communication monitoring timeout has
occurred in communication test.
• Check the network status using the CC-Link IE TSN/CC-Link IE
Field diagnostics of the engineering tool, and take action. Then,
retry the operation.
D906H Transmission completion wait timeout has
occurred in communication test.
• Check the network status using the CC-Link IE TSN/CC-Link IE
Field diagnostics of the engineering tool, and take action. Then,
retry the operation.
• Lower the transient transmission usage frequency, and retry the
operation.
Error
code
Error definition and causes Action Detailed
information 1
Detailed
information 2
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