Omron CS1W-ETN21 Results Storage Area Response Codes, Network Relay Errors, Devices

	Results Storage Area Response Codes		Section 8-6
Network Relay Errors		For network relay errors using SEND(090) or RECV(098), check the path of
		the command using the routing tables and the nature of the error using the
		response code to eliminate the cause of the error.

For network relay errors using CMND(490), the location of the relay error is recorded in the second through third words of the response, as shown below.

Bit

First word

			First byte							Second byte
7	6	5	4	3	2	1	0	7	6	5	4	3	2	1	0

1

Command code

Second word

7	6	5	4	3	2	1	0	7	6		5		4	3	2	1	0
1	Mai	n response code (MRE					S)					S-b-response code (SRES)
Relay error flag												1: PLC non-fatal error flag
										1: PLC fatal error flag

Third word

7	6	5	4	3	2	1	0	7	6	5	4	3	2	1	0
1	Error network address								Error node address

8-6	Results Storage Area Response Codes
			The response codes stored in the Results Storage Area can be used to trou-
			bleshoot socket service problems. Refer to Socket Services Parameter Area 1
			to 8 (Ethernet Unit to CPU Unit) on page 88 for the location of the response
			codes stored in the Results Storage Area.
			The UNIX socket service error messages corresponding to the response
			codes are given in the following table. Refer to the documentation for the
			devices involved when communicating between an Ethernet Unit and other
			devices.
Response		UNIX error	Description	Probable remedy
code		message
0003		ESRCH	No such process	Close the local socket and try reopening it.
0006		ENXIO	No such device or address
0009		EBADF	Bad file number (incorrect socket
			specification)
000D		EACCES	Permission denied	Check the IP address of the remote node and
			(Broadcast address specified for	try to reconnect.
			remote IP address for active TCP
			open)
000E		EFAULT	Bad address (copy failed between	Close the local socket and try reopening it.
			kernel and user area)
0011		EEXIST	File exists
0016		EINVAL	Invalid argument (socket library
			argument error)
0018		EMFILE	Too many open files (More than 32
			sockets)
0020		EPIPE	Broken pipe (remote node closed	Close the local socket.
			socket)
003C		EPROTONO-	Protocol not supported (protocol	Close the local socket and try reopening it.
		SUPPORT	other than UDP, TCP, or RAW speci-
			fied)
003D		EPROTOTYPE	Protocol wrong type for socket
003E		ENOBUFS	No buffer space available	There is too much load (traffic) on the Ethernet
				Unit. Check your user applications.

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