Operating instructions

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4.11.5 Virtual links
According to CANopen, a PDO telegram contains 0...8 data bytes. A mapping for any
kind of objects can be done in these data bytes.
For the system bus, the PDO telegrams are firmly defined with 8 data bytes. The map-
ping is not done via mapping parameters as with CANopen, but via the method of
sources and links.
Each function provides its output data via a source. These sources are defined via
source numbers. The input data of functions are defined via parameters. The link of a
data input to a data output is done via the assignment of parameters to source num-
bers.
Example 1:
Function A
Function C
Function B
Source
Parameter 125
Parameter 187
Source
-
-
No. 27
No. 5
In example 1, the two inputs of function C are connected with the outputs of functions
A and B. Thus, the parameterization for this connection is:
Function C
Parameter 125 = Source-No. 27
Parameter 187 = Source-No. 5
Example of a virtual link in VPlus:
Parameter
(Softwarefunction)
e.g. Start-clockwise 068
Source-No.
(Operation mode)
e.g. 71-S2IND
Digital input
The assignment of the operation modes to the software functions available can be
adapted to the application in question.