Omron CS Series User Manual

17
Overview of Communications Functions Section 1-5
1-5 Overview of Communications Functions
1-5-1 FINS Communications Service
Basic Functions FINS commands can be sent to or received from other PLCs or computers on
the same Ethernet network by executing SEND(090), RECV(098), or
CMND(490) instructions in the ladder diagram program. This enables various
control operations such as the reading and writing of I/O memory between
PLCs, mode changes, and file memory operations.
Executing, from the host computer, FINS commands with UDP/IP or TCP/IP
headers enables various control operations, such as the reading and writing
of I/O memory between PLCs, mode changes, and file memory operations.
For example, it is possible to connect online via Ethernet from FINS communi-
cations applications such as the CX-Programmer, and to perform remote pro-
gramming and monitoring. (See note.)
Note Use CX-Programmer version 4.0 to use TCP/IP. For lower versions of CX-Pro-
grammer, FinsGateway Version 2003 or higher is required to use TCP/IP.
The FINS gateway function enables access to PLCs on not only the same
Ethernet network but on various other networks, including SYSMAC LINK and
Controller Link.
Upgraded Functions With the CS1W-ETN21 and CJ1W-ETN21, the following functions have been
upgraded.
• The FINS communications service can be executed not only with UDP/IP
but also with TCP/IP, and it is even possible to use FINS communications
with both UDP/IP and TCP/IP together on the same network. Using TCP/
IP makes FINS communications highly reliable.
Ethernet
Ethernet Unit Ethernet Unit Ethernet Unit
User program
IP
UDP or TCP
FINS IP FINS
CS/CJ-series
CPU Unit
UDP or TCP
SEND(090),
RECV(098), or
CMND(490)
instruction
Ethernet
Ethernet Unit
IP
UDP or TCP
FINS
CS/CJ-series
CPU Unit

Omron CS Series Specifications

General

Brand	Omron
Model	CS Series
Category	Network Hardware
Language	English