New CANopen specs

CAN in Automation (CiA) has released several new and some updated CANopen specifications. Most important, says CiA managing director Holger Zeltwanger, is the CiA 311 XML electronic data sheet (EDS) specification. It defines the XML scheme to be used for the electronic description of CANopen devices.

The specification is based on the ISO 15745 standard. In the future, XML electronic data sheets will substitute the well-known ASCII-based EDS as specified in CiA 306. EDS are used by configuration, diagnostic, or testing tools to get information about the CANopen device to be configured, diagnosed, or tested.

"ASCII was fine in its way, but it doesn't provide that much in detailed specifications of the device being used," says Zeltwanger. "With XML format, you can have more information and more powerful configuration tools."

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