Overview Of Communications Functions; Fins Communications Service - Omron CS Series Operation Manual

Overview of Communications Functions

1-5

Overview of Communications Functions

1-5-1

FINS Communications Service

Basic Functions
Upgraded 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.
CS/CJ-series
CPU Unit
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.
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
IP FINS IP FINS
UDP or TCP UDP or TCP
Ethernet Unit
User program
SEND(090),
RECV(098), or
CMND(490)
instruction
IP FINS
UDP or TCP
CS/CJ-series
CPU Unit
Ethernet Unit
Section 1-5
Ethernet Unit Ethernet Unit
Ethernet
17