WHAT'S CAN ?
The
Controller Area Network (CAN) is a serial communications protocol which
efficiently supports distributed real-time control with a very high
level of security. CAN can be used with multi-master capabilities, and
especially suited for networking "intelligent" devices as well as
sensors and actuators within a system or sub-system. In CAN networks
there is no addressing of subscribers or stations in the conventional
sense, but instead, prioritized messages are transmitted.
DeviceNet
based on
the CAN bus is one of the world's leading device-level networks for
industrial automation. In fact, more than 40% of end users surveyed by
independent industry analysts report choosing DeviceNet over other
networks. It offers robust, efficient data handling because it is based
on Producer/Consumer technology. This modern communications model offers
key capabilities that allow the user to effectively determine what
information is needed and when. The features of DeviceNet are showed as
below:
-
Multi-vendor interoperability
-
Fast,
easy installation - resulting in space and time savings
-
Future-ready, for easy additions as your needs expand and change
-
Improved uptime through intelligent insight into device operations
-
Efficient bandwidth utilization through producer/consumer
communications
-
On-the-fly configuration/re-configuration and additions without
powering down
CANopen
is a networking system based on the CAN bus. It unleashes the full power
of CAN by allowing direct peer to peer data exchange between nodes in an
organized and, if necessary, deterministic manner. The network
management functions specified in CANopen simplify project design,
implementation and diagnosis by providing standard mechanisms for
network start-up and error management.
The features of CANopen are
showed as bellow:
-
Auto
configuration of the network
-
Easy
access to all device parameters
-
Device
synchronization
-
Cyclic
and event-driven data transfer
-
Synchronous reading or setting of inputs, outputs or parameters
