Omron SYSMAC CS Series Operation Manual page 175

Expanded System Configuration
FINS
Host Link header
Host Link
Host Link Master
Communications from Host Computer
SEND(090)/
RECV(098)
CMND(490)
Host Link
Host Link terminator
In Host Link mode, FINS commands contained between a header and termi-
nator can be sent from the host computer to any PLC on the Network. Com-
munications are possible with PLCs on the same or different types of
interconnected Networks up to two levels away (three levels including the
local level but not including the Host Link connection).
Host Link
FINS
Host Link
terminator
Host Link header
Controller Link Network
Using a Serial Communications Board/Unit with unit version 1.2 or later and
Serial Gateway mode enables received FINS commands to be enclosed in a
Host Link header and terminator and transmitted to the PLC on the serial line
(Host Link slave).
SEND(090): Sends data to the Host computer.
RECV(098): Receives data from the Host computer.
CMND(490): Executes a specified FINS command.
Controller
Link Network
FINS
Bridge
Controller Link Network
SEND(090)/
RECV(098)
CMND(490)
SEND(090)/
RECV(098)
Ethernet
CMND(490)
Gateway
Section 2-5
137