Basics Of Cam Track Mapping - Siemens SIMOTION Function Manual

Cam Track TO - Part II
4.2 TO Cam Track basics
See also
Basics of cam track mapping (Page 88)
Mapping output cams onto the cam track (Page 88)
Mapping onto negative axis positions (e.g. linear axes) (Page 89)
Relation of track length, modulo length and activation mode in mapping (Page 90)
4.2.5.1

Basics of cam track mapping

● Conversion and mapping of the track onto the axis is identical for modulo and non-modulo
● The track length can be longer than, shorter than or equal to the modulo length of the axis.
● The positions of single output cams always relate to the cam track, not to the axis position.
● If the cam track is activated and the axis rotates negatively, the track will also travel in a
● Cam tracks defined outside of the track length limits are mapped or converted during
4.2.5.2 Mapping output cams onto the cam track
The _enableCamTrack command is used to map the starting and end positions of the output
cam individually onto the cam track (not onto the axis). Output cams, which have been defined
outside of the track range, are converted to this track. Negative starting and end-position values
are also converted to the cam track.
88
axes. Certain points must be noted when mapping onto negative reference positions (see
Section Mapping onto negative axis positions (e.g. linear axes)).
Based on this relationship, the switching states of the output cams may differ when they
are mapped onto the axis.
Only on activation of the cam track and entry of the axis reference position is a relationship
to the axis position created (start of cam track output).
negative direction. There is no conversion on the basis of the direction of rotation (see
figure). If a cam track should always be output in a positive direction, irrespective of the
axis direction, this must be solved in the application.
Figure 4-16 Cam track in positive and negative direction, depending on axis direction
mapping onto the track range.
Output Cams and Measuring Inputs
Function Manual, 04/2014