Mitsubishi Electric MELSEC L Series User Manual page 110

Error code
D721H
D722H
D725H
D726H
D727H
D728H
D729H
D72AH
D783H and
D784H
D800H
D806H
D814H
D816H
D81AH
108
Downloaded from ManualsNet.com
Error
Data link start/stop retry error (to
another station)
Data link start/stop retry error (to own
station)
Station type error (station that
starts/stops data link throughout the
entire system)
Transient data request command error
Data link start/stop command
instructing stations different
Data link start/stop command
instructing stations different
Station No. or network No. not set
Station No. out of range
Transient data request error
Head module error
Receive queue full
Head module error
Head module error
Head module stop error
search engine
• Data link cannot be stopped because cyclic transmission has been
stopped.
• Data link cannot be started because cyclic transmission is in execution.
• Data link cannot be stopped because cyclic transmission has been
stopped.
• Data link cannot be started because cyclic transmission is in execution.
The head module cannot start or stop data link of all or multiple stations.
Perform these operations from the master station.
Correct the request command at the request station, and retry the operation.
• Data link start was instructed from a station different from the one that had
instructed the data link stop. Instruct data link start and data link stop from
the same station.
• The method of the data link start differs from that of the data link stop.
Instruct the data link start using the same method as the data link stop (ex.
Data link is stopped using the CC-Link IE Field Network diagnostics, and
the data link is started using a program).
• Data link start has failed. Forcibly restart the data link.
Data link start was instructed during execution of data link. Instruct data link
stop then data link start.
• Set the station number or network number in the programming tool, and
write the parameters.
• By online operation of the master station, set the network number or
station number of the head module.
By online operation of the master station, set the network number or station
number of the head module within the specified range.
Network number: 1 to 239
Station number: 1 to 120
• The read request by the CC-Link IE Field Network diagnostics of the
programming tool is incorrect. Close the "CC IE Field Diagnostics"
window, and request it again.
• Check the read request data at the request station, and retry the
operation.
• A malfunction may have occurred due to noise. Check the wire and cable
distances and grounding condition of each device, and take measures to
reduce noise.
• Execute a unit test for the head module. If a failure occurs again, the
possible cause is a hardware failure of the head module. Please consult
your local Mitsubishi representative.
• Reduce the frequency of transient transmission, and retry the operation.
• Check if the cables and the switching hub are connected properly.
• A malfunction may have occurred due to noise. Check the wire and cable
distances and grounding condition of each device, and take measures to
reduce noise.
• Execute a unit test for the head module. If a failure occurs again, the
possible cause is a hardware failure of the head module. Please consult
your local Mitsubishi representative.
• A malfunction may have occurred due to noise. Check the wire and cable
distances and grounding condition of each device, and take measures to
reduce noise.
• Execute a unit test for the head module. If a failure occurs again, the
possible cause is a hardware failure of the head module. Please consult
your local Mitsubishi representative.
Check the error in the "PLC Diagnostics" window of the programming tool,
and take action.
Action