Omron CS1W-ETN21 operation manual Troubleshooting with Response Codes, Controller, Status Read

Troubleshooting with Response Codes Section 8-5

8-5 Troubleshooting with Response Codes

You can troubleshoot the errors in FINS communications from the response codes when the SEND(090), RECV(098), or CMND(490) instructions have been used. For the storage areas of the response codes refer to information on page 141 under 6-6-4 Writing Programs.

The table below lists response codes (main and sub-codes) returned after execution of FINS commands, the probable cause of errors, and recom- mended remedies. The response codes provided here are for the Ethernet Unit. Refer to the FINS Command Reference Manual (W227) or the operation manuals for the relevant Unit for further information on response codes.

The 6th, 7th, and 15th bits of the response codes have specific functions. The 6th bit will be ON when a non-fatal error has occurred in the PC at the remote node; the 7th bit will be ON when a fatal error has occurred in the PC at the remote node; and the 15th bit will be ON when a network relay error has occurred. Refer to information given after the following table for more informa- tion on relay errors.

				First byte							Second byte
Bit	7	6	5	4	3	2	1	0	7	6	5	4	3	2	1	0
		Ma	in response code (MR					ES)			Sub-response code (SRE						S)

1:PLC fatal error flag

1:Relay error flag

1: PLC non-fatal error flag

Main code	Sub-code	Check point	Probable cause	Remedy
00: Normal	00	---	---	---
completion
01: Local	03: Local node	---	Send error in local node was	Reduce the load (traffic) on the
node error	send error		caused by lack of available	Ethernet Unit. Check your user
			space in internal buffers.	applications.
	05: Node address	Local IP address	The network cannot be	Correct the local IP address.
	setting error		accessed because the IP
			address setting is not correct.
	07: Local node	System load	The internal buffers are full	Correct the user application to
	busy, cannot		because there is too much traf-	reduce traffic at the Ethernet
	send		fic at the local node, preventing	Unit.
			data from being sent.
02: Remote	01: Remote node	IP address table,	IP address of remote node not	Set IP address of remote node
node error	not in network	IP router table	set correctly in IP address table	into IP address table and, if inter-
			or IP router table.	network transmission is required,
				into the IP router table.
	02: No such Unit	Control data in	No node with the specified unit	Check the remote node’s unit
		instruction	address.	address and make sure the cor-
				rect one is being used in the con-
				trol data.
	05: Response	Response to	Message packet was corrupted	Check the protocol and controller
	timeout	CONTROLLER	by transmission error.	status by reading them with FINS
		STATUS READ		commands. Increase the num-
		and PROTOCOL		ber of transmit retry attempts.
		STATUS READ
		FINS command
		Control data in	Response time-out, response	Increase the value for the
		instruction	watchdog timer interval too	response monitor time in the
			short.	control data.
		Read error log	The transmission frame may	Read out the error log and cor-
			be corrupted or the internal	rect as required.
			reception buffer full.

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