Mitsubishi Electric MELSEC iQ-F FX5 Series User Manual page 179

Error Error definition and causes
code
D654H System error
D655H Network addresses of the master station
and slave stations are incorrect.
D656H System error
D657H Parameter error
D658H Parameter error
D720H System error
to
D725H
D727H System error
to
D729H
D731H System error
D742H System error
D840H Number of transient requests exceeded
the upper limit of simultaneously
processable requests.
D841H The request data size of memory read/
write command is out of range.
D842H System error
D843H The module operation mode is set to a
mode in which transient transmission
cannot be executed.
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
D902H The online test data is incorrect.
D903H During execution of the communication
test, the test was retried.
D905H A communication monitoring timeout has
occurred in communication test.
D906H Transmission completion wait timeout has
occurred in communication test.
D909H The header information of transient
transmission is incorrect.
D90AH During execution of the communication
test, the test was retried.
D90BH The number of stations that communicate
in the network is out of the specification
range.
Action
Please consult your local Mitsubishi representative.
Correct the IP address setting of the master station or slave stations.
Please consult your local Mitsubishi representative.
• Write the network parameter to the CPU module again.
• If the error occurs again even after taking the above, please consult your
local Mitsubishi representative.
• Write the network parameter to the CPU module again.
• If the error occurs again even after taking the above, please consult your
local Mitsubishi representative.
Please consult your local Mitsubishi representative.
Please consult your local Mitsubishi representative.
Please consult your local Mitsubishi representative.
Please consult your local Mitsubishi representative.
• Pause the transient transmission temporarily, and retry the operation.
• Lower the transient transmission usage frequency, and retry the
operation.
Correct the read or write size specification at the transient request source,
and retry the operation.
Please consult your local Mitsubishi representative.
After completion of the module communication test, retry the transient
transmission.
Correct the request data at the transient request source, and retry the
operation.
• 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.
After completion of the communication test, retry the operation.
• 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.
• 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.
Correct the header information at the transient request source, and retry the
operation.
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.
• Check the network status using the CC-Link IE TSN/CC-Link IE Field
diagnostics of the engineering tool, and take action.
• If the number of slave stations per network is more than 120, reduce it to
120 or less.
Detailed
information 1
Detailed
information 2
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10 TROUBLESHOOTING
177
10.5 List of Error Codes
10