Omron CS1G/H-CPUxxH Instructions Manual page 891

Network Instructions
Host computer connected to
the CPU Unit's built-in port
Host computer
Host Link
FINS
command
Host Link header
Host computer
Host Link
FINS
command
Host Link header
870
Host computer connected to a
Serial Communications Board
Host computer
To port
CPU Unit
Host Link
Host Link FCS
and terminator
Note Host Link communications can be sent through the network. In this case, the
FINS command travels through the network normally. When the command
reaches the Host Link system, the necessary Host Link header and terminator
are attached to the FINS command and the command is sent to the host com-
puter.
Communications from a Host Computer (Host Link)
It is possible to send FINS commands from a host computer to the PLC to
which it is connected as well as other devices in the network (CPU Units, Spe-
cial I/O Units, computers, etc.). In this case, the necessary Host Link header
and terminator must be attached to the FINS command when it is sent.
Host Link FCS
and terminator
Host computer connected to a
Serial Port Unit
(CS Series only)
To port
Serial Communications
Board
Host computer
Host Link
FINS command
FINS command
Section 3-25
Host computer
To port
Host Link
Serial Communications
Unit
FINS
Host Link FCS
command
and terminator
Host Link header