Mitsubishi Electric MELSEC iQ-R Series User Manual page 232

Error Error definition and causes
code
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.
D90CH The communication destination specified for
the communication test is incorrect.
D90DH An error was detected in the network
module.
D912H Transient transmission sending failed.
D913H An error was detected in the network
to module.
D917H
D919H No response from the target station of the
communication test.
4 TROUBLESHOOTING
230
4.5 List of Error Codes
Action
After completion of the module communication test, retry the transient
transmission.
Execute the instruction again after correcting the request data at the
transient request source.
• 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 if "Routing Setting" of "CPU Parameter" is correctly set, and take
action.
• 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.
• Execute the instruction again after lower the transient transmission usage
frequency.
• Check if "Routing Setting" of "CPU Parameter" is correctly set, and take
action.
Execute the instruction again after correcting the header information at the
transient request source.
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.
• Correct "Target Station" of communication test, and retry the operation.
• "Communication Test" cannot be executed for own station and relay
sending station. Set "Target Station" to other than own station and relay
transmission station.
• The target station is mounted on the same base unit (main base unit and
extension base unit) as the connected station (own station). Do not
execute the communication test for station on the same base unit (main
base unit and extension base unit) as the connected station (own station).
Please consult your local Mitsubishi representative.
• Execute the instruction again after lower the transient transmission usage
frequency.
• Check if the switching hub and the Ethernet cables are connected
properly.
Please consult your local Mitsubishi representative.
• Correct the network number, station number, or IP address for the target
station of the communication test.
• Check if the network configuration setting is correctly set in the master
station within the same network as the target station of the communication
test.
• When "IP Address" is selected for "Communication Method",
"Communication Test" cannot be executed for stations on networks
different from that of the connected station (own station). Change
"Communication Method" to "Network No./Station No.".
Detailed
information 1
Detailed
information 2
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