Mitsubishi Electric MELSEC iQ-RJ71EN71 User Manual page 313

Error Error details and causes
code
1155H • The specified connection was already closed in TCP/IP
communications.
• Open processing is not performed.
1157H • The specified connection was already closed in UDP/
IP communications.
• Open processing is not performed.
1158H • The receive buffer or send buffer is not sufficient.
• The window size of the external device is not sufficient.
1165H Data was not sent correctly with UDP/IP.
1166H Data was not sent correctly with TCP/IP.
1167H Unsent data found, but could not be sent.
1180H • The same IP address has been set as the system A IP
address, system B IP address, and/or control system
IP address.
• Network addresses of the system A IP address,
system B IP address, and control system IP address
are different.
Action
• Perform the open processing for the specified
connection.
• Check if the open processing has been performed in
the external device.
• Perform the open processing for the specified
connection.
• Check if the open processing has been performed in
the external device.
• Check the operation of the external device or switching
hub.
• When communications using a fixed buffer or socket
communications is used, increase the execution
frequency of the BUFRCV/SOCRCV instruction.
• When the value of 'State of receive buffer'
(Un\G1900030) is 0001H, reduce the frequency of data
receive from the external device.
• Check the settings for connection with the external
device.
• 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 PING test and communication status test,
and if the test was completed with an error, take the
corrective action.
• Check the settings for connection with the external
device.
• 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 PING test and communication status test,
and if the test was completed with an error, take the
corrective action.
• The close request may have been received from the
external device when the data was sent. Check
whether "TCP Status" of the corresponding connection
number is set to "Disconnected" with the Ethernet
diagnostics of the engineering tool.
• Check the settings for connection with the external
device.
• 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 PING test and communication status test,
and if the test was completed with an error, take the
corrective action.
• Set different IP addresses for the system A IP address,
system B IP address, and control system IP address.
• Set the same network address for the system A IP
address, system B IP address, and control system IP
address.
Detailed information
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Parameter information
• Parameter type
• I/O No.
• Parameter No.
• Network No.
• Station No.
3 TROUBLESHOOTING
311
3.5 List of Error Codes
3