Omron CS1W-ETN21 Address Information Read, TCP Transitions 4 bytes, Number of Addresses Response

Command/Response Reference Section 7-3

TCP Transitions (4 bytes)

The TCP connection status is returned as one of the numbers shown in the following table. Refer to Appendix C TCP Status Transitions for a diagram of transitions.

Number	Stage	Status
00 00 00 00	CLOSED	Closed.
00 00 00 01	LISTEN	Waiting for connection.
00 00 00 02	SYN SENT	SYN sent in active status.
00 00 00 03	SYN RECEIVED	SYN received and sent.
00 00 00 04	ESTABLISHED	Already established.
00 00 00 05	CLOSE WAIT	Received FIN, waiting to close.
00 00 00 06	FIN WAIT 1	Completed and FIN sent.
00 00 00 07	CLOSING	Completed and exchanged FIN. Awaiting ACK.
00 00 00 08	LAST ACK	FIN sent and completed. Awaiting ACK.
00 00 00 09	FIN WAIT 2	Close completed and ACK received. Awaiting FIN.
00 00 00 0A	TIME WAIT	After closing, pauses twice the maximum segment
		life (2MSL).

Precautions

All the above values are set to 0 if Ethernet communications functions are stopped due to improper settings in the system setup.

Response Codes

Response code	Description
0000	Normal
1001	Command too large

7-3-28 ADDRESS INFORMATION READ

Reads FINS node addresses and IP addresses

Command Block

27 65

Command code

Response Block

27 65

6 bytes

Command	Response	Number	Address
code	code	of addresses	information

Parameters

Number of Addresses (Response)

The number of pairs of FINS node addresses and IP addresses being returned. The Ethernet Unit is always 0001 (1 decimal).

Address Information

Pairs of FINS node addresses and IP addresses. Each pair requires 6 bytes and has the following configuration.

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