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Half Duplex

NI CompactRIO Device Drivers Help

Edition Date: December 2017

Part Number: 373197L-01

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A typical half-duplex multidrop bus architecture also involves a master-slave protocol. However, in a half-duplex system, all transmitters and receivers are connected to the same transmission line. A half-duplex system is often referred to as a two-wire system. The following figure shows a typical half-duplex system.

Typical Half-Duplex System


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