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Examples of incorrect repeater unit connections – Omron CQM1H-CLK21 User Manual

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Constructing Networks with Repeater Units

Section 3-4

Long-distance Wiring: 2-stage Repeater Unit Connection

Not more than 2 Repeater Units (2 stages) must be passed for any node to
reach any other node

Partial Optical Conversion: 2-stage Repeater Unit Connection

Two Wire-to-Optical Repeater Units make up a single set counted as a single
stage. Therefore, not more than 4 Repeater Units (2 stages) must be passed
for any node to reach any other node.

Examples of Incorrect Repeater Unit Connections

More than 2 Stages of Repeater Units

The path from PLC A to PLC B travels via 3 Repeater Units (3 stages). This
kind of network is NOT allowed.

More than 2 Stages of Repeater Units

Stage 2

CS1W-RPT01
Repeater Unit

Stage 1

Stage 2

Optical
fiber cable

CS1W-RPT02 or
CS1W-RPT03
Repeater Unit

PLC A

PLC B

CS1W-RPT01
Repeater Unit

CS1W-RPT01
Repeater Unit

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