Function block library
7-69
 SHB9300CRV EN 2.0
7.6.16.3 Determination of the number of cam profiles to be stored
The number of cam profiles to be stored in the controller are determined via GDC. The memory
available can be used for max. 1, 2, 4 or 8 different cam profiles.
The points available per cam profile depend on the number of profiles selected:
Number of profiles Number of points available per profile*
1 2048
2 1024
4 512
8 256
Code C1300 (FB CDATA) indicates the number of selected profiles.
Note!
The table above refers to the relative data model. With the absolute data model, the points can be
accessed individually. The number of points is however reduced to 25%. A more detailed
description of ’data models’ can be obtained from the chapter 5.6
7.6.16.4 Selection of cam profiles stored for processing
Depending on the drive task it is necessary
l
to change the constellation between the cam profiles (selection via analog input CDATA-SEL)
or
l
to cyclically process the cam profiles stored in the same sequence again and again
(automatic cam profile processing).
Selection via analog input CDATA-SEL
Thecam profileis selected with CDATA-CYCLE= LOWviathe analoginput CDATA-SEL(see fig. FB).
The permissible value range of the input -SEL is between 0 and the number of profiles selected in
GDC.
Note!
Values to CDATA-SEL < 0, are interpreted as 0;
Values to CDATA-SEL  max. number of profiles are limited to the values displayed in (C1300/0).
The value is accepted
– during operation after zero crossing in X direction.
It is thus possible, for instance, to select a cam, which is to be activated after the next zero
crossing, using the PLC.
– immediately, if CDATA-RESET = HIGH.
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