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URL:
http://www.can-cia.de/can/
Controller Area Network (CAN) is a serial bus system
especially suited to interconnect smart devices to build smart systems or
sub-systems. The attributes of a Controller Area Network (CAN) are:
·
the multi-master capabilities that allow building smart and redundant
systems without the need of a valuable master,
·
the broadcast messaging that is the first piece of the guarantee for
100% data integrity as any device within the network uses the very same
information,
·
the sophisticated error detecting mechanism and the retransmission of
faulty messages which is the second piece of the guarantee for 100% data
integrity,
·
the availability of more than 50 controllers from low-cost devices to
high-end chips from more than 15 manufacturers,
·
and the availability of CAN for the next 15 years as its use within the
European automotive industry and the decision for CAN from the US and Japan
automotive industry is guaranteed.”
CAN is a ubiquitous protocol devised for monitoring
and control in automotive applications. However, due to its small footprint and
other technical attributes, it has found applications in many areas requiring
interaction between sensors and controls. Virtually every manufacturer of
embedded micro controller provides devices with built-in CAN interfaces. In
this regard it is probably only second in commonality to a UARTs and I2C as a
means of device communications.
DeviceNetTM is a related and similar protocol that
differs in higher layers from CAN.
CAN was standardized as ISO 11898.
In the year 1992, some companies founded the
non-profit trade-association CiA in order to provide technical, product and
marketing information with the aim of fostering CAN’s image and providing a
path for future developments of the CAN protocol. 411 companies (December 2002)
have joined the non-profit organization, which develops and supports various
CAN-based higher-layer protocols
Keywords:
DeviceNet, CAN, Controller Area Network In-building, Automotive,
Association
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