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CANopen FD

Support for all tools

Embedded Systems Academy is now adding CANopen FD support to all their CANopen products. The first line of products supporting CANopen FD is the CANopen Magic software for the analysis and test of networks.

(Photo: ESAcademy)

As of the latest release (Version 9.0) all CANopen Magic products support both CANopen and CANopen FD. For CANopen FD an appropriate CAN FD interface must be connected. All of the company’s current tests have been made with the PCAN-USB FD and PCAN-USB Pro FD interfaces from Peak System.

Embedded Systems Academy (ESAcademy) are currently in the process of contacting all current CANopen Magic users to inform them about the upgrade options. CANopen Magic users, who have not yet received an email from them about their upgrade options can contact the company.

Along with other experts, Embedded Systems Academy participated in the CANopen FD special interest group for more than two years now. Initially, some only wanted a few changes. However as legacy (Classical only) CAN controllers produce error frames, when CAN FD messages are transmitted, the majority saw the chance to “dump complete backward compatibility” and add new and advanced features. The previous SDO communication (request-response scheme between one master and multiple devices) was replaced with the USDO communication – the Universal Service Data Object.

A first version of CANopen FD (CiA 1301) was released in September. CiA 1301 can be purchased by non-members from CiA on request. Some of the new features include: TPDOs can now have up to 64 byte of data (so far 8 byte), USDO mesh definition – every node can send client requests to every other node, as well as USDO communication may be a broadcast to all nodes.

The USDO service allows any device to send service requests to any other device, without the need for an NMT master or a CANopen manager to be involved. This improves plug‑and‑play support and self‑configuring systems, as now each device independently can analyze its surroundings: which devices are on this network and what communication objects do they have available.


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