J1939 Safety is an extension of J1939 which is described in the specification SAE J1939-76. The safety communication can be done in parallel to a normal J1939 transmission in the same network.
CANopen Safety – originally defined in CiA 304 – has been published as European standard (EN 50325-5).
It specifies a communication, which complies with the requirements of SIL-3 applications, on a CAN network.
This safety relevant communication can be realized in parallel to existing CANopen communications.