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10 TROUBLESHOOTING
10.5 List of Error Codes
3C2FH An error was detected in the memory. Reset the CPU module, and run it again. If the same error occurs
again even after taking the above, the possible cause is a hardware
failure of the error module. Please consult your local Mitsubishi
representative.
3E01H Network type of the own station is unexpected
setting.
Rewrite the module parameter using the engineering tool. If the same
error occurs again even after taking the above, the possible cause is
a hardware failure of the error module. Please consult your local
Mitsubishi representative.
3E02H A time synchronization error was detected. Reset the CPU module, and run it again. If the same error occurs
again even after doing so, the possible cause is a hardware failure of
the error module or CPU module. Please consult your local
Mitsubishi representative.
3E03H An error was detected in the memory. Reset the CPU module, and run it again. If the same error occurs
again even after doing so, the possible cause is a hardware failure of
the error module or CPU module. Please consult your local
Mitsubishi representative.
3E04H A hardware failure has been detected. Reset the CPU module, and run it again. If the same error occurs
again even after doing so, the possible cause is a hardware failure of
the error module or CPU module. Please consult your local
Mitsubishi representative.
4000H to
4FFFH
Errors detected by the CPU module ( User's Manual for the CPU module used)
C011H The port number of the external device is not set
correctly.
Correct the port number of the external device.
C012H The port number used in a connection already
opened is set. (For TCP/IP)
Correct the port numbers of the Ethernet-equipped module and the
external device.
C013H The port number used in a connection already
opened is set. (For UDP/IP)
Correct the port numbers of the Ethernet-equipped module and the
external device.
C015H The data was sent to the connected device while
the IP address setting of the device set in the
network configuration setting was incorrect.
• Correct the IP address of the connected device in the network
configuration setting.
• Check that the IP address class of the connected device is set to
A, B, or C in the network configuration setting.
C017H A connection could not be established in the open
processing.
• Check the operation of the external device.
• Check if the open processing has been performed in the external
device.
• When a firewall is set in the external device, check if access is
permitted.
• Check if the Ethernet cable is disconnected.
C018H The specified IP address of the external device is
incorrect.
Correct the specified IP address of the external device.
C032H The external device does not send an ACK
response in the TCP/IP communications.
• Since there may be congestion of packets on the line, send data
after a certain period of time.
• Check if the Ethernet cable is disconnected.
C035H The alive status of an external device could not be
checked.
• Check the operation of the external device.
• Check if the Ethernet cable is disconnected.
C037H • The receive buffer or send buffer is not
sufficient.
• The window size of the external device is not
sufficient.
• Check the operation of the external device or industrial switch.
• When the value of the 'Receive Buffer Status Storage Area'
(Un\G68126) is 0001H, reduce the reception frequency of data
from the external device.
C038H Data was not sent correctly with UDP/IP. • Check the settings for connection with the external device
(including an industrial switch) and the operation of the external
device (error or during resetting). Check that there is no connection
failure (if the Ethernet cable is disconnected).
• Since there may be congestion of packets on the line, send data
after a certain period of time.
• Execute the PING test and communication status test, and if the
test was completed with an error, take the corrective action.
• Correct the network number and station number/IP address of the
target station of the dedicated instruction.
Error
code
Error definition and causes Action Detailed
information 1
Detailed
information 2
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