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6
6-24 TCP/IP Ethernet Communications User’s Manual – January 1996
GFK-1004B
Table 6-10. Exception Log Event Codes - Continued
Log Event
Code Possible Cause and Resolution
Event ”12”
TCP events
(Continued)
18 “Connection to remote node failed; resuming”
Sent RST in tcpacked( ). Entry 3 is the endpoint (TCP connection identifier).
Entry 4 is the TCP state as shown above. Entry 5 is the code field of the
offending packet.
19 “Connection to remote node failed; resuming”
Sent a TCP RST to a remote node aborting a failed TCP connection. This
abort was done due to a mismatch in local and remote connection status.
Entry 3 is the endpoint (TCP connection identifier). Entry 4 is the TCP state:
1 = CLOSED
2 = LISTEN
3 = SYN-SENT
4 = SYN-RECEIVED
5 = ESTABLISHED
6 = FIN-WAIT-1
7 = FIN-WAIT-2
8 = CLOSE-WAIT
9 = LAST-ACK
10 = CLOSING
11 = TIME-WAIT
Entry 5 contains TCP flags.
1a “Connection to remote node failed; resuming”
Sent a TCP RST to a remote node aborting its TCP connection. This abort was
done because the connection was unknown to the local Interface. Entry 3 is
the source TCP port. Entry 4 is the destination TCP port. Entry 5 is the code
field of the offending TCP packet.
1b “Connection to remote node failed; resuming”
Gave up on TCP connection establishment due to exceeding the limit on the
listen queue size.
1c “Connection to remote node failed; resuming”
Closed a connection that has not yet been set up Entry 3 contains the end-
point, and Entry 4 contains the TCP state. This exception may serve to explain
a subsequent event 12, Entry 2 = 1a exception.
ff (Not reported to PLC Fault Table)
An error has occurred while retrieving program task names, but the software
is unable to clear an entry in the PSM transfer table. Entry 3 is the returned
status code and is significant to developers.