CANDPSX user manual rev 2 Page 7 of 42
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1.3 CAN
CAN is a fieldbus initially developed by Robert Bosh for the automotive sector and now extended
to industrial applications. Thanks to its reliability, robustness, expandibility and flexibility, it has
become a standard, specified in ISO 11898 (Controller Area Network CAN for high-speed
communication). The maximum baud rate of CAN bus is 1Mbit/s.
The CAN interface is managed by a microprocessor integrating a CAN controller. The Layer-1/2
(Physical layer e Data Link layer) protocol implemented in all CAN modules provides, among other
things, the requirements for data encoding. Data transportation or data requests are executed by
means of a Data Frame containing up to 8 bytes of user data. An identifier, which also determined
the priority level, characterizes each COB (Communication OBject).
Below you find the characteristics of CAN communication on CANDPSX:
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