Omron CP1H CPU Operation Manual page 373

Serial Communications
Protocol
1:N NT links OMRON PTs (Programmable Terminals)
(1:N NT
NS-series PT
Links are
also used for
1:1 connec-
tions.)
RS-232C
NT Link
Host Link Host computer or OMRON PT (Programmable Terminal) 1) Various control commands
RS-232C
Host Link
Peripheral CX-Programmer
bus (toolbus)
RS-232C
Peripheral bus (toolbus)
Connected devices
CP1H CPU Unit
Personal computer
Personal computer running
the CX-Programmer
Description
Data can be exchanged with
PTs without using a communi-
cations program in the CPU
Unit.
such as reading and writing
I/O memory, changing the
operating mode, and force-
setting/resetting bits can be
executed by sending C-
mode host link commands
or FINS commands from the
host computer to the CPU
Unit.
2) It is also possible to send
FINS commands from the
CPU Unit to the host com-
puter to send data or infor-
mation.
Use Host Link communica-
tions to monitor data, such as
operating status, error informa-
tion, and quality data in the
PLC or send data, such as pro-
duction planning information, to
the PLC.
Provides high-speed communi-
cations with the CX-Program-
mer.
Section 6-1
Serial Serial
port 1 port 2
OK OK
OK OK
OK OK
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