CAN-XL demonstrators

At Embedded World 2023, Bosch, NXP and Vector will be showing CAN XL networks. CAN XL is the third CAN protocol generation, with which bit rates of up to 20 Mbit/s are possible. The maximum data field length of a frame telegram is 2048 bytes.

• The registered association CiA (CAN in Automation) will show two CAN XL networks at its Embedded World booth (Hall 1/203). One is provided by NXP, It runs at 20 Mbit/s in the data phase and uses the prototype transceivers of the Dutch semiconductor manufacturer. The arbitration bit rate is 500 kbit/s and error detection is disabled. Vector's demonstrator is also on display at the CiA booth. It demonstrates service-oriented communication based on CAN XL. At the fair in Nuremberg, a third CAN-XL demonstrator can be seen at the Bosch booth (Hall 4/334). It uses the CAN-XL FPGA implementation from Bosch.

• "CAN is more than just another improvement of the CAN protocol and physical data transmission," said Holger Zeltwanger, CiA managing director. "It is a complete ecosystem." It provides management functions embedded in the protocol for higher protocols, so you can run different applications on one network. Virtual networks are also supported. Optional CANsec protocol (cybersecurity) and frame fragmentation are available.

• CiA members have developed the CAN-XL base specifications (CiA-601 series), which were already partially published last year. The data link layer (CiA 610-1) has been submitted to ISO and is to be incorporated into the next version of the ISO 11898-1 standard. It is currently in the voting process. The specifications of the CAN-SIC-XL transceivers (CiA 610-3) and the CAN-SIC transceivers (CiA 601-4) have already been integrated into the ISO 11898-2 standard and are available as DIS (Draft International Standard). After incorporation of the latest comments, this document will be published as an ISO standard.