Tuesday, February 14, 2012

Busses connect!

Profinet-IO to CANopen gateway

The Profibus user organisation (PNO) and CAN in Automation (CiA) have released version 1.0 of the Amendment 7 to the Fieldbus Integration into Profinet-IO specification. This document describes the integration of CANopen networks into a Profinet-IO backbone network. 

Besides the mapping to PDO and SDO services, this specification standardizes also the data type mapping and representation. The jointly developed amendment deals also with the decoupling of the cyclic Profinet-IO communication and the event-driven PDO communication in CANopen. This means, the system designer can easily integrate a CANopen sub-network as it is into a higher hierarchical Profinet-IO network. CiA has released internally the document as CiA 309-4. 

CANopen sub-networks link low-cost sensors and motion control units to machines using a Profinet-IO backbone network. The CANopen networks often operate semi-autonomously. This allows the design of modular machines.

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