Omron CJ1W-ETN21 - 04-2009 Operation Manual page 257

Results Storage Area Response Codes
Response UNIX error
code message
003F EISCONN
0040 ENOTCONN
0041 EALREADY
0042 EMSGSIZE
0043 EDESTADDRREQ
0044 ENOPROTOOPT
0045 ECONNABORTED
0046 EINPROGRESS
0047 ENOTSOCK
0048 EOPNOTSUPP
0049 EADDRINUSE
004A ECONNREFUSED
004B ECONNRESET
004C EADDRNOTAVAIL
004D EAFNOSUPPORT
004E ENETUNREACH
004F EHOSTDOWN
0050 EWOULDBLOCK
0051 EHOSTUNREACH
0053 ETIMEDOUT
0063 ESELABORT
0066 (None)
0080 (None)
232
Description
Socket is already connected (con-
nection attempted to open socket)
Socket is not connected (send
attempted to closed socket)
Operation already in progress (con-
nection attempted to existing non-
block connection)
Message too long
Destination address required (desti-
nation address not specified)
Protocol not available (unsupported
option specified)
Software caused connection abort
(another task closed socket)
Operation now in progress (non-
block connection ended during pro-
cessing)
Socket operation on non-socket
Operation not supported on socket
Address already in use (UDP or
TCP open request sent for port
already in use)
Connection refused (TCP socket
(active open) processing refused by
remote node)
Connection reset by peer (TCP
socket closed by remote node)
Can't assign requested address
(mistake in remote IP address)
Address family not supported by
protocol family
Network is unreachable
Host is down
Operation would block
No route to host
Connection timed out (TCP timed
out)
Used for internal Ethernet Unit pro-
cessing
Internal memory cannot be allocated
for processing; the service cannot
be provided.
Timed out for passive TCP open
request
Probable remedy
Close the local socket and try reopening it.
Check the length of send data.
UDP or TCP: 1 to 1,982 bytes
UDP broadcasts: 1 to 1,472 bytes
Close the local socket and try reopening it.
Check the port number.
TCP ports can remain unusable for 1 min after
closing.
Passively open a remote TCP socket, checking
the remote IP address and remote TCP port
number.
Close the local socket and try reconnecting.
Check the setting of the remote IP address and
try reconnecting.
Close the local socket and try reopening it.
Set the path to the remote node in the IP router
table.
Check the remote host and communications
path.
Close the local socket and try reopening it.
The specified node does not exist on the desig-
nated IP network segment. Check the commu-
nications path.
Check the remote host and communications
path.
Close the local socket and try reopening it.
Traffic is too high at the Ethernet Unit. Correct
the user application to reduce traffic at the
Ethernet Unit.
Either the remote node is not executing an
active TCP open or there is a block on the net-
work.
Section 8-5