CANopen FD close to be released

CiA calls its members for final round of comments on the CANopen FD application layer, the next generation of standardized embedded networking.

With the introduction of CAN FD, the CAN community has improved the Classical CAN protocol providing more bandwidth (today: up to 5 Mbit/s) and larger payload (up to 64 byte per data frame). First CAN FD controllers and transceivers qualified for 5 Mbit/s are available. In order to offer the CAN community the advantages of Classic CANopen networking coupled with the advantages of CAN FD, CiA is specifying the CANopen FD application layer and communication profile. This has been almost finalized. Therefore CiA asks its members to review the work draft carefully and to check, whether their requirements on tomorrow’s embedded networking can be met with the functionality, provided in the latest work draft.

Please assist the CiA experts in the SIG (Special Interest Group) “Application layer” in developing a comprehensive CANopen FD application layer and communication profile specification, by submitting your comments before July 15, 2017. In particular we would like to draw your attention to the functionality that enhances the well-known CANopen protocols such as, e.g.:
  • Universal service data object (USDO)
  • Updated EMCY write service and protocol
  • Updated device model
  • Indication of implemented CiA document version
  • New error history
Furthermore we like to ask you to evaluate modifications that change or clarify well-known CANopen behavior, such as, e.g.:
  • Applying the CANopen bitrate and node-ID
  • Avoidance of CAN remote frames and CAN remote frames-based protocols
  • Restriction of data elements in the object dictionary to the size of 1 byte or any integer multiple of 1 byte.
We would like to thank you in advance for your support. If you have questions, please write an email to secretary(at) or call +49-911-928819-0 Reiner Zitzmann.