Master start/end position

The start and end positions of the master define the range of the master values and therefore the scale of the horizontal axis of the cam. The default settings are given in angular degrees with 0 and 360 as limiting values.

Slave start/end position

The associated slave positions are determined by the graph type that is defined for the cam. However, the segment depicted by the curves (this is also the scale of the vertical axis) can be defined by the start and end positions of the slave that are given here.

These settings affect the work in the cam editor and cam table. Depending on these parameters, the slave start point is adjusted automatically when the end point is changed, as well as the other way around. This adjustment optimizes the period transition to be as smooth and jerk-free as possible.

Smooth transition

: The values for position, velocity, and acceleration are adjusted automatically.

Slave period

Indicates when the slave period is repeated mechanically. Then the slave position at the start and end of the master period can deviate by one integer multiple of this value.

This value is effective only if the Smooth transition check box is selected.

Activation of these options for the continuity of the curve does not have any effect when editing the cam. It does, however, prompt a continuity check, which reports any violations to the message view (CAM). It is not possible to edit jumps in the position curve. The default setting also requires the continuity of velocity and acceleration. You can clear these options, for example in the special case of a curve that consists of only linear segments. However, this can lead to breaks in the position curve. By default, the jerk (4th derivative) is not tested for jumps.

Position

: The entire curve is tested for jumps.

Velocity

Acceleration

Jerk

When compiling, MC_CAM_REF structure variables are generated. A cam is described according to the following options:

Polynomial (XYVA)

Polynomial description of the individual points, consisting of master position, slave position, slave velocity, and slave acceleration.

One-dimensional point array

1D table of slave positions

Two-dimensional point array

2D table of composite master/slave positions

Elements

Number of elements in the arrays. This array has already been created in SM3_Basic for the standard cases 128 and 256. If you type in another value, you must create the structure in your application (see the following example).