How Communication Works - Omron ZS Series Communication Command Reference

Section 1
Connections and Settings of External Devices

How Communication Works

How Communication Works
ZS Series controllers have communication functions with external devices. Use this function to
read the data in ZS Series controllers from the host and to write the setting data.
Communication is achieved via the Command and Response Method based on the
CompoWay/F, which is Omron's proprietary communication protocol. Controllers perform
processing according to the command sent from the host, and then return the result to the host
which sent the command as a response.
Host
Programmable Controller
Personal Computer
Entering Commands
Receives the results of the execution
of commands.
About channel No. when controllers are gang-mounted
The following diagram shows the channel numbers when multiple Sensor Controllers
are connected.
LD ON ZERO ENABLE
H
P
L
Multi-Controller
ZS Series
1-2
CompoWay/F Communication Command Reference
LD ON ZERO ENABLE LD ON ZERO ENABLE
H H
P P
L L
Sensor Controllers
CH0 CH1 to CH9
ZS Series Controller (RUN mode)
H H L D L D
O N O N
Z E Z E
P P R O R O
E N E N
A B A B
L L L E L E
Executing Commands
Outputs the result of the execution of
commands.
LD ON ZERO ENABLE LD ON ZERO ENABLE
H
P
L
Controllers are in a
non-measurement state
when executing
commands.