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Appendix A

Master / Slave Example

A–5

PLC Master / Slave Example

Step 1: Design the Network

In this chapter we’ll use the following example configuration to create a simple

master slave network.

WARNING: These examples are for illustration purposes only and are not intended

for use in actual applications. This is because there may be many aspects of your

system safety precautions that are not addressed in the examples. If you use these

examples in actual applications, you are increasing the risk of personal injury and/or

property damage.

Goal:

1. Write a bit pattern from an input module (X0 – X7) to Slave #1

2. Read 1 V memory location from Slave #2.

Master Station

Slave #2

Slave #1

The Example

Configuration

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