Omron CS1W-ETN21 IP Addresses in Fins Communications, Allocating Addresses to Ethernet Units

IP Addresses in FINS Communications Section 5-2

5-2 IP Addresses in FINS Communications

5-2-1 Specifying Nodes in FINS Communications Services

With FINS communications services on an Ethernet network, IP addresses, UDP port numbers, and TCP port numbers are paired with FINS node addresses to specify nodes on the network.

Application level	FINS		Node number
Transport level	UDP	UDP port	TCP	TCP port
		number		number
Internet level	IP		IP address	Must be allocated.
Physical level	Ethernet			Automatically allocated
		Ethernet address

Note Use the “Node No.” rotary switch on the front of the Ethernet Unit to set the FINS node address.

Allocating Addresses to Ethernet Units

Ethernet Unit FINS Message Reception

The IP address, FINS/UDP port number, and FINS/TCP port number set for the Ethernet Unit are mainly used when receiving FINS communications mes- sages.

Application level	FINS	Node number
Transport level	UDP	UDP port	TCP	TCP port
		number		number
Internet level	IP		IP address
Physical level	Ethernet
		Ethernet address		Receives communications data
				conforming to Ethernet address,
				IP address, UDP port number,
				and FINS node number.

Ethernet V2

IP

UDP

FINS header FINS data

• Ethernet address:	A fixed number is assigned to each Ethernet Unit
	and it cannot be changed.
• IP address:	Either use the default IP address
	(192.168.250.FINS_node number), or set the
	address in the word allocated in the DM Area or
	in the Unit Setup from the CX-Programmer.

•FINS/UDP port number: Either use the default FINS/UDP port number (9600) or set the number using the CX-Program- mer's Unit Setup.

•FINS/TCP port number: Either use the default FINS/TCP port number (9600) or set the number using the CX-Program- mer's Unit Setup.

• FINS node address:	Set the number using the NODE NO. rotary
	switch on the front of the Ethernet Unit.

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