Omron CS1W-ETN21 - Manual (Page 253)

228
Results Storage Area Response Codes Section 8-6
003F EISCONN Socket is already connected (con-
nection attempted to open socket) Close the local socket and try reopening it.
0040 ENOTCONN Socket is not connected (send
attempted to closed socket)
0041 EALREADY Operation already in progress (con-
nection attempted to existing non-
block connection)
0042 EMSGSIZE Message too long Check the length of send data.
UDP or TCP: 1 to 1,982 bytes
UDP broadcasts: 1 to 1,472 bytes
0043 EDESTADDRREQ Destination address required (desti-
nation address not specified) Close the local socket and try reopening it.
0044 ENOPROTOOPT Protocol not available (unsupported
option specified)
0045 ECONNABORTED Software caused connection abort
(another task closed socket)
0046 EINPROGRESS Operation now in progress (non-
block connection ended during pro-
cessing)
0047 ENOTSOCK Socket operation on non-socket
0048 EOPNOTSUPP Operation not supported on socket
0049 EADDRINUSE Address already in use (UDP or
TCP open request sent for port
already in use) Check the port number.
TCP ports can remain unusable for 1 min after
closing.
004A ECONNREFUSED Connection refused (TCP socket
(active open) processing refused by
remote node) Passively open a remote TCP socket, checking
the remote IP address and remote TCP port
number.
004B ECONNRESET Connection reset by peer (TCP
socket closed by remote node) Close the local socket and try reconnecting.
004C EADDRNOTAVAIL Can’t assign requested address
(mistake in remote IP address) Check the setting of the remote IP address and
try reconnecting.
004D EAFNOSUPPORT Address family not supported by
protocol family Close the local socket and try reopening it.
004E ENETUNREACH Network is unreachable Set the path to the remote node in the IP router
table.
004F EHOSTDOWN Host is down Check the remote host and communications
path.
0050 EWOULDBLOCK Operation would block Close the local socket and try reopening it.
0051 EHOSTUNREACH No route to host The specified node does not exist on the desig-
nated IP network segment. Check the commu-
nications path.
0053 ETIMEDOUT Connection timed out (TCP timed
out) Check the remote host and communications
path.
0063 ESELABORT Used for internal Ethernet Unit pro-
cessing Close the local socket and try reopening it.
0066 (None) Internal memory cannot be allocated
for processing; the service cannot
be provided. Traffic is too high at the Ethernet Unit. Correct
the user application to reduce traffic at the
Ethernet Unit.
0080 (None) Timed out for passive TCP open
request Either the remote node is not executing an
active TCP open or there is a block on the net-
work.
Response
code
UNIX error
message
Description Probable remedy