Kuhnke Electronics Instruction Manual

7 CANopen
CANopen
At this point, we will only very briefly touch upon the key
properties of CANopen.
For further reading please study instruction manual E 615
GB, CANopen - Basics and KUBES Controller
Applications or
CANopen for 3S Runtime System.pdf by 3S
Useful details can also be found at http://www.canopen.org
7.1 CANopen for Beginners
Standard:
CANopen is defined in European Standard (EN 50325-4
2002 Part 4: CANopen).
EDS file:
The functionality and properties of a CANopen device are
described in a standardised "electronic data sheet" (EDS).
To integrate a CANopen unit, CoDeSys requires the
relevant EDS file.
Object dictionary:
Every CANopen unit compiles its internal data (process
data, parameters) into an object dictionary which it makes
available to the bus via a defined interface.
The items of the object dictionary are accessed by means
of a 16 bit index plus an 8 bit subindex.
Addresses:
CANopen networks support the management of up to 127
logical devices which are identified and addressed by their
node address.
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