Omron SYSMAC CJ1W-EIP21 - Manual (Page 440)

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FINS Commands Addressed to EtherNet/IP Units or Built-in EtherNet/IP Ports Appendix E
Remote Port Number (4 bytes)
The remote port number allocated to the socket.
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.
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
ADDRESS INFORMATION READ
Reads FINS node addresses and IP addresses
Command Block
Response Block
Parameters
Number of Addresses (Response)
Returns the number of pairs of FINS node addresses and IP addresses. With the EtherNet/IP Unit or built-in
EtherNet/IP port, this value is always 0001 (1 decimal).
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).
Response code Description
0000 Normal end
1001 Command too large
27 65
Command
code
27 65
Number
of addresses
Address
information
Response
code
Command
code
6 bytes