Overview; Devicenet Bus Topology - ABB RDNA-01 User Manual

Devicenet adapter module rdna-01

Table of Contents

Overview

This chapter contains a short description of DeviceNet bus

topology, the RDNA-01 Adapter module, a delivery checklist, and

warranty information.

Further information can be obtained from www.odva.org.

The DeviceNet network has a linear bus topology. Terminating

resistors are required on each end of the trunk line. Drop lines as

long as 6 metres (20 feet) each are permitted, allowing one or

more nodes to be attached. DeviceNet allows branching

structures only on drop lines. An example of an allowable topology

is shown in

Terminating

Resistor

Figure 1. DeviceNet bus topology

Figure 1.

Trunk line

Node

Tap

Node

Tap

Node

Tap

Node

Drop line

Overview

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