Mitsubishi Electric MELSEC L Series User Manual page 105

(2) Error codes (4000H to 4FFFH)
If an error occurs at communication request from the programming tool, intelligent function module, or network
system connected, the head module returns the error code (any of 4000H to 4FFFH) to the request source.
This error code is not stored in SD0 because the error is not the one detected by the self-diagnostic function of
the head module.
When the request source is a programming tool, a message and an error code are displayed on the programming
tool. When the request source is an intelligent function module or network system, the head module returns an
error code to the request source.
For messages, details, causes, and actions of errors, refer to the following.
(3) Error codes (D000H to DFFFH)
The following table lists the error messages, error conditions, causes, and actions of the error codes (D000H to
DFFFH).
Error code
D0A0H
D0A1H
D0A2H
D0A3H
D0A4H to D0A6H
D0A7H
D0E0H
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Error
Transient data transmission response
wait timeout
Transient data transmission
completion wait timeout
Transient data transmission
processing wait timeout
Transient data transmission error
Transient transmission failed
Transient reception failed
Station type mismatch
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• If the own station or target station is disconnected from the network,
identify the cause of the disconnection and take action.
• When the mode of the master station is "Online (High Speed Mode)",
change it to "Online (Normal Mode)" and retry the operation.
• When the receiving station encountered overloading of transient data,
reduce the frequency of transient transmission and then retry the
operation.
• Check if the cables and the switching hub are connected properly.
• Connect the cable to the other port on the module, and retry the operation.
• Reduce the frequency of transient transmission, and retry the operation.
• 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 switching hub and the cables at the request source are
connected properly.
• If the own station or target station is disconnected from the network,
identify the cause of the disconnection and take action.
• Correct the target station number of transient data, and retry the operation.
• If the station for which transient data is to be sent is on another network,
check if the routing parameters for each station are correctly set.
• Check if the cables and the switching hub are connected properly.
• Connect the cable to the other port on the module, and retry the operation.
• Reduce the frequency of transient transmission, and retry the operation.
• 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 if the cables and the switching hub are connected properly.
• Connect the cable to the other port on the module, and retry the operation.
• Reduce the frequency of transient transmission, and retry the operation.
• 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.
In the network configuration settings of the master station, change the station
type of the head module to "Intelligent Device Station".
CHAPTER 11 TROUBLESHOOTING
Action
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