Omron CS1W-ETN21 Communicating between Omron PLCs, Communications Specifications, FINS/TCP Tab

Communicating between OMRON PLCs			Section 6-6
	CX-Programmer's Unit Setup
	Setup Tab
	Item	Setting
	Broadcast	All ones (4.3BSD)
	FINS/TCP port	Default (9600)
	IP address	0.0.0.0 (Use default IP address.)
	Subnet mask	0.0.0.0
	Baud rate	Automatic detection
	IP router tables	None

FINS/TCP Tab

Not set. (All defaults are used.)

FinsGateway ETN_UNIT Setup

TCP Nodes Tab: Ethernet Node Definition Dialog Box

Item	Setting
Node address	2
IP address	192.168.250.2
Destination port number	9600
Keep-alive setting	Selected (yes)

6-6 Communicating between OMRON PLCs

FINS commands can be sent from the user’s ladder-diagram program in the

PLC by using the SEND(090), RECV(098), and CMND(490) instructions.

SEND(090): Writes I/O data from the local node to another node.

RECV(098): Reads I/O data from another node to the local node.

CMND(490): Issues FINS commands for controlling operations such as send- ing and receiving I/O memory data to and from other nodes, reading informa- tion regarding other nodes, and so on.

6-6-1 Communications Specifications

The following table shows the specifications for PLC communications using the SEND(090), RECV(098), and CMND(490) instructions.

Item		Specifications
Destination	1:1	SEND(090), RECV(098), CMND(490) instructions
	1:N	SEND(090), CMND(490) instructions (broadcasting)
Data length	SEND(090):
	990 words (1,980 bytes) max.; broadcasting: 727 words (1,454
	bytes)
	RECV(098):
	990 words (1,980 bytes) max.
	CMND(490):
	1,990 bytes max.; broadcasting: 1,462 bytes (after FINS com-
	mand code)

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