Two controller standard recommendations released

CAN in Automation (CiA) has released two Controller Area Network (CAN) FD related recommendations. CiA 601-1 recommends the physical layer design and 601-2 provides guidelines for the controller interface to the host controller.

02/11/2017


CAN in Automation (CiA) has released two controller area network (CAN) FD-related recommendations. CiA 601-1 recommends the physical layer design for CAN FD device interfaces. It is based on the ISO 11898-2:2016 standard, which specifies the CAN FD transceivers. The document deals with that what isn't covered by the ISO standards; in particular, the symmetry issues of the other interface components. This includes the transceiver loop-delay, the transceiver TX delay, and RX delay symmetries as well as the transmitter delay. CiA 601-1 doesn't cover system design recommendations; they will be given in CiA 601-3, which is still under development. The CiA 601-4 ringing suppression circuitry specification for CAN FD networks is under review and will be released soon as version 2.0.

CiA 601-2 provides guidelines for the CAN controller interface to the host controller. Besides special states and modes, it recommends the control and status interface, the bit-timing configuration parameters including those for the secondary sample-point. The 16-pages document doesn't specify the time-stamping functionality. This is done in CiA 603, which will be released in the future.

Edited from a CAN in Automation (CiA) press release by CFE Media. CAN in Automation is a CFE Media content partner. See more Control Engineering diagnostic and asset management stories

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