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Error code
D741
Station type error (execution station)
H
D742
Transient transmission failed
H
D743
Station type error (execution station)
H
D744
Failed to clear to flash ROM
H
D780
History acquisition setting data full
H
D781
Network module failure
H
D782
History acquisition setting data error
H
D783
and D784
Transient data request error
H
H
D785
Flash ROM failure
H
D786
Flash ROM failure
H
D800
Network module failure
H
D803
to D805
Network module failure
H
H
D806
Receive queue full
H
D807
Network module failure
H
456
Error
• Execute the operation after data link of the master operating station is
started.
• The instruction cannot be executed on a local station and submaster
station. Execute it on the master operating station.
Retry the operation after transient transmission is completed.
The instruction cannot be executed on a local station. Execute it on the
master station and submaster station.
• The flash ROM may be faulty. 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.
The area for writing history acquisition setting data for network event history
is insufficient. Reset or power off and on the CPU module.
• 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.
The previous history acquisition setting data for network event history were
not written successfully. Reset or power off and on the CPU module.
• 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.
• The maximum number of writes to the flash ROM is exceeded. Replace
the master/local module.
The flash ROM may be faulty. 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.
• 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.
• 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.
• Reduce the frequency of transient transmission, and retry the operation.
• Check if the cables and the switching hub are connected properly.
• Use the COM instruction to increase the frequency of transient
transmission.
• 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.
Action
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Table of Contents
Troubleshooting
