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. ( Page 100 Status of Each Connection) The error codes will be stored in 'Error code' (Un\G108 to
Un\G139).
Error code Error name
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
C050H Ethernet communication
error
C051H Ethernet communication
error
C052H Ethernet communication
error
C053H Ethernet communication
error
C054H Ethernet communication
error
C056H Ethernet communication
error
C057H Ethernet communication
error
C058H Ethernet communication
error
Error details and causes
• The port number already used in the open
completion connection of TCP/IP is set.
• The external device port number set in the
external device information is duplicated.
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 the 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.
When the communication data code is set to
"ASCII", ASCII code data which cannot be
converted to binary is received.
Maximum number of bit devices for which data
can be read/written all at once is outside the
allowable range.
Maximum number of word devices for which
data can be read/written all at once is outside
the allowable range.
Maximum number of bit devices for which data
can be random read/written all at once is
outside the allowable range.
Maximum number of word devices for which
data can be random read/written all at once is
outside the allowable range.
Read or write request exceeds maximum
address.
The request data length in the SLMP message
does not match the number of data in the
character section (part of the text).
Request data length after ASCII-to-binary
conversion does not match the number of data
in the character section (part of text).
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.
• For communication, set to "Binary" in the communication data
code and restart the CPU module.
• Correct the send data from the target device and send it.
Correct the number of bit devices that can be read or written all at
once, and send to Ethernet module again.
Correct the number of word devices that can read or write all at
once, and send data to Ethernet module again.
Correct the number of bit devices that can be read or written all at
random, and send data to Ethernet module again.
Correct the number of word devices that can read or write all at
random, and send data to Ethernet module again.
Correct starting address or the number of read and write points,
and send data to Ethernet module again. (Be careful not to
exceed the maximum address.)
After reexamining and correcting the content of the text or the
request data length in the header, resend the message to the
Ethernet module.
After reexamining and correcting the content of the text or the
request data length in the header, resend the message to the
Ethernet module.
10 TROUBLESHOOTING
10.6 List of Error Codes
10
119