Omron E3X-CIF11, Operation Manual

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Overview of CompoBus/S Communications Model Section 3-1
3-1 Overview of CompoBus/S Communications Model
3-1-1 Introduction
The E3X-SRT21 for CompoBus/S communications is a Communication Unit
that uses the CompoBus/S to monitor the ON/OFF output signals of one or
more Fiber Optical Sensors through Fiber Amplifier Units. Remote I/O com-
munications can be used to monitor ON/OFF output signals without any spe-
cial programming.
Note When using CompoBus/S Communication Units, do not read ON/OFF signals
via the Fiber Amplifier Unit cable. (Fiber Amplifier Units can be connected to
Cordless Slave Connectors only. They cannot be connected to Slave Connec-
tors with Cords.)
Refer to the following manual when using the CompoBus/S Communication
Unit:
CompoBus/S Operation Manual (W266).
3-1-2 CompoBus/S Communications Overview
Words in the IN Area of the master can be allocated to the E3X-SRT21 Com-
munication Unit for storage of the ON/OFF data and status data of the Sen-
sors for CompoBus/S remote I/O communications.
CompoBus/S Master Unit
CPU Unit
Remote I/O
IN Area
Unit 1 ON/OFF
Unit 2 ON/OFF
Unit 6 ON/OFF
Sensor
Communications Flag
PLC
Example when the
maximum of six
Sensors are
connected.
CompoBus/S
Fiber Sensors
E3X-SRT21 Fiber
Amplifier Sensor
Communication
Unit for
CompoBus/S
Unit
1
Unit
2
Unit
13
E3X-DA-N Digital Fiber Amplifier Unit
(Uses Cordless Slave Connector.)
Remote I/O
communications