HSC filters

With these filters, only one HSC filter per axis is allowed and it must imperatively be the first filter (filter[0]). In the axis lists, HSC filters are only preconfigured but do not take effect until activated by the NC command #FILTER ON[HSC] in the NC program. In the pre-configuration, make sure that all axes in an axis group are configured identically. Otherwise axis behaviour may become asynchronous. In addition, it is possible to deactivate HSC filters during machining or to redefine their parameters.

The following filter types may only be used in conjunction with the prototype HSC.

Step response

Step response of the HSC filter
Step response of the HSC filter

Contour deviation adjustment aid

The contour deviation when using HSC axis filters is composed of three components.

  1. Cycle time
  2. Filter order
  3. Feed rate run

The following simple relationships apply:

The graphic below represents a cycle time of 1 ms and a feed rate of F1000 at a 90° corner. With different marginal data, the filter orders must be uprated according to the ratios above.

Contour error per filter order at a 90° corner
Contour error per filter order at a 90° corner

The figure above assumes a corner velocity of 1000 mm/s and a cycle time of 1 ms.