CAN Physical Layer for Industrial Application:Two-Wire Differential Transmission
1. Scope
The scope of this document is, to define the content of the physical layer and the basic
characteristics of the physical medium, for communication according to the Controller Area
Network protocol specification (CAN) between different types of electronic modules in general
industrial applications. CAN is a serial communication protocol supporting distributed real-time
control and multiplexing.
This part refers to using a differentially driven two-wire bus line with common return as physical
medium.
2. References
/1/ Controller Area Network protocol specification, Version 2.0
Robert Bosch GmbH 1991
/2/ ISO 7498: 1984, Information processing systems - Open systems interconnection -
Basic reference model
/3/ ISO 11898: 1992, Road vehicles - Interchange of digital information -
Controller area network (CAN) for high-speed communication
/4/ D-Sub connector specification (DIN 41652 or corresponding international standard)
/5/ CAN in Automation, Working Group Physical Layer,
Protocol of the 2nd Meeting on 16.Jun.1992