Connecting The Host Computer (Not Including Support Software); Overview; Flow Of Operation - Omron CP1E CPU UNIT SOFTWARE User Manual

14 Serial Communications
14-6 Connecting the Host Computer
(Not Including Support Software)
Host computers can be connected using this method only with the CP1E N/NA-type CPU Unit.

14-6-1 Overview

Commands are sent from a host computer (not including Support Software) to the CP1E CPU Unit to
read and write data. The serial communications mode is set to Host Link.
Precautions for Correct Use Precautions for Correct Use
Support Software such as the CX-Programmer cannot use the Host Link protocol. Use Periph-
eral USB port instead.
Command flow Command type
Host computer Host link
→
command
PLC
(C Mode)
Host link command
FINS command
(with Host Link
header and
terminator) sent.
FINS
Host Link
header

14-6-2 Flow of Operation

1
Communications wiring
2
3
Program from host
14-30
Communica-
tions method
Create frame Directly connect the host com-
in the host puter in a 1:1 or 1:N system.
computer
and send the
command to
the PLC.
Receive the
response.
Directly connect the host com-
puter in a 1:1 system or 1:N
system.
Host Link
terminator
Connect the computer and CP1E CPU Unit using
RS-232C ports.
Set the PLC Setup (select Host Link for the serial
PLC Setup
communications mode and set the communications
conditions) and transfer the PLC Setup from the
CX-Programmer to the CP1E CPU Unit.
Send the following commands from the host computer.
• C-mode commands
• FINS commands
Configuration Application
Use this
method when
communicating
primarily from
the host com-
OR
puter to the
Command
PLC.
Use these
methods when
communicating
primarily from
the host com-
puter to PLCs
OR
Command in the network.
CP1E CPU Unit Software User's Manual(W480)
Remarks
−
The FINS com-
mand must be
placed between
a Host Link
header and ter-
minator and
then sent by the
host computer.