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D814
H
Network module failure
• A malfunction may have occurred due to noise. Check the wire and cable
distances and grounding condition of each device, and take measures
against noise.
• Execute hardware and self-loopback tests. If a failure occurs again, the
hardware of the master/local module may be faulty. Please consult your
local Mitsubishi representative.
D816
H
Network module failure
• A malfunction may have occurred due to noise. Check the wire and cable
distances and grounding condition of each device, and take measures
against noise.
• Execute hardware and self-loopback tests. If a failure occurs again, the
hardware of the master/local module may be faulty. Please consult your
local Mitsubishi representative.
D819
H
CPU module failure
• Replace the CPU module.
• If this error persists, please consult your local Mitsubishi representative.
D81A
H
CPU module stop error Check the error in the "PLC Diagnostics" window of the programming tool.
D81B
H
Programmable controller power failure The power is off. Turn it on.
D81D
H
Network module failure
• A malfunction may have occurred due to noise. Check the wire and cable
distances and grounding condition of each device, and take measures
against noise.
• Execute hardware and self-loopback tests. If a failure occurs again, the
hardware of the master/local module may be faulty. Please consult your
local Mitsubishi representative.
D81F
H
to D825
H
Network module failure
• A malfunction may have occurred due to noise. Check the wire and cable
distances and grounding condition of each device, and take measures
against noise.
• Execute hardware and self-loopback tests. If a failure occurs again, the
hardware of the master/local module may be faulty. Please consult your
local Mitsubishi representative.
D826
H
Flash ROM failure
• The maximum number of writes to the flash ROM is exceeded.
• Reset the CPU module. If a failure occurs again, the hardware of the
master/local module may be faulty. Please consult your local Mitsubishi
representative.
D827
H
Communication RAM failure
• A malfunction may have occurred due to noise. Check the wire and cable
distances and grounding condition of each device, and take measures
against noise.
• Execute hardware and self-loopback tests. If a failure occurs again, the
hardware of the master/local module may be faulty. Please consult your
local Mitsubishi representative.
D902
H
Incorrect online test data
• Correct the data at the station that started the online test, and retry the
operation.
• If this error persists, please consult your local Mitsubishi representative.
D903
H
Communication test retry error After completion of the communication test, retry the operation.
D905
H
Communication monitoring timeout in
communication test
• Check the network status using the CC-Link IE Field Network diagnostics
of the programming tool, take action, and retry the operation.
• Check if the routing parameters are correctly set.
D906
H
Communication test transmission
completion wait timeout
• Check the network status using the CC-Link IE Field Network diagnostics
of the programming tool, take action, and retry the operation.
• Reduce the frequency of transient transmission, and retry the operation.
• When the mode of the master station is "Online (High Speed Mode)",
change it to "Online (Normal Mode)" and retry the operation.
• Check if the routing parameters are correctly set.
D909
H
Header information error in transient
transmission
Correct the header information at the request source, and retry the
operation.
Error code Error Action