Industrial Communication Guide

Profibus DP

Profibus PA

CAN (DeviceNet)

Distinctive features

High transmission speed as compared to other fieldbuses Suitable for more complex components, extensive configuration options such as variable data rate

Simple to combine with Profibus DP via converter. Designed for use with simple analog sensors and actuators, fixed/low trans- mission speed, Limited extension

Originally designed mainly for use in vehicles and mobile automation. DeviceNet offers a much lower data transmission rate than Profibus, for example Limitation in the no. of components Limited extension Messages can be read by several components at the same time

System-developer/ organization

Siemens / PNO / PI

Siemens / PNO / PI

Rockwell Automation / ODVA

Properties

Very widespread in Europe and China, limited network extension

Very widespread in Europe and China, low transmission speed

Widespread in USA, low tranmission speeds, limited no. of components.

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