Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual page 707

Error Error name Error details and cause
code
112EH Connection • A connection could not be
establishment established in the open
failed processing.
1133H Socket • The response send failed during
communications socket communications.
response send
error
1134H TCP connection • A TCP ULP timeout error has
timeout occurred in the TCP/IP
communication. (The external
device does not send an ACK
response.)
1152H IP address error • The IP address is not set correctly.
1155H Connection • The specified connection was
number already closed in TCP/IP
acquisition error communications.
• Open processing is not
performed.
1157H Receive buffer • The specified connection was
securement already closed in UDP/IP
error communications.
• Open processing is not
performed.
Stop/ Action
continue
Continue • Check the operation of the external
device.
• Check if the open processing has been
performed in the external device.
• Check and correct the port number of
the module, IP address/port number of
the external device, and opening
method.
• When the firewall is set in the external
device, check if the access is
permitted.
• Check if the Ethernet cable is
disconnected.
Continue • 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 Ethernet communication
load is high because of the Ethernet
functions being executed. Use the
Ethernet functions so that the
communication load is reduced.
• Check if the connection cable is
disconnected.
• Check that there is no connection
failure with the switching hub.
Continue • Check the operation of the external
device.
• Check and correct the TCP ULP
timeout value.
• Since there may be congestion of
packets on the line, send data after a
certain period of time.
• Check if the Ethernet communication
load is high because of the Ethernet
functions being executed. Use the
Ethernet functions so that the
communication load is reduced.
• Check if the connection cable is
disconnected.
Continue • Correct the IP addresses.
Continue • Perform the open processing for the
specified connection.
• Check if the open processing has been
performed in the external device.
Continue • Perform the open processing for the
specified connection.
• Check if the open processing has been
performed in the external device.
Detailed Diagnostic
information timing
 Always

Always

Always
Parameter Always
information

Always

Always
APPX
705
Appendix 1 Error Codes
A