Ethernet Communication Error - Mitsubishi Electric MELSEC iQ-F Series User Manual

Ethernet communication error

The Ethernet communication error codes can be checked in "Status of Each Connection" on the "Ethernet Diagnostics"
screen of FX5-ENET/IP. (Page 112 Status of Each Connection) The error codes will be stored in 'Error code' (Un\G108 to
Un\G139).
Error Error name
code
C012H Error during execution of
dedicated instruction
C013H Error during execution of
dedicated instruction
C017H Error during execution of
dedicated instruction
C020H Error during execution of
dedicated instruction
C027H Error during execution of
dedicated instruction
C029H Error during execution of
dedicated instruction
C035H Ethernet communication
error
C04CH Ethernet communication
error
C1A6H Ethernet communication
error
Error details and causes
The port number already used in the open
completion connection of TCP/IP is set.
The port number used in the open completion
connection is set during the open processing
of UDP/IP.
The connection was not established by the
open processing of the TCP connection.
The data length exceeds an allowable range.
Socket communication send message has
failed.
Description of control data is not correct.
The existence of the external device could not
be confirmed within the response monitor
timer value.
The data cannot be sent since the internal
buffer such as IP header buffer has no space.
The specification of the connection No. is not
correct.
Action
Check and correct the port number of the Ethernet module and
the target device.
Check and correct the port number of the Ethernet module.
• Check the operation of the target device.
• Check the open processing of the target device.
• Correct the open setting of the communication parameter.
• Check the port number of the Ethernet module, the IP
address/port number of the target device, and the open
method.
• Check if the connection cable is disconnected.
• Correct the data length.
• If the amount of data to send exceeds the prescribed amount,
divide and send the data.
• Check the operation of the external device or switching hub.
• Since there may be congestion of packets on the line, send
data after a certain period of time.
• Check if the connection cable is disconnected.
• Check that there is no connection failure with the switching
hub.
• Execute the communication status test, and if the test was
completed with an error, take the corrective action.
• Execute the module communication test, and check that there
is no failure in the module.
• Check the IP address specified as the target.
Correct the descriptions of the control data.
• Check the operation of the external device.
• Reexamine and change the set values for existence
confirmation.
• Check if the connection cable is disconnected.
Send the same data again, and check the receiving of the
response.
Specify 1 to 32 for the connection No.
10 TROUBLESHOOTING
10.6 List of Error Codes
10
129