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Modeling > Feature Modeling > Datum/Point > Datum CSYS > Concepts

Updating and editing a datum CSYS

Unlike faces, edges, datum planes, and datum axes, datum CSYS features are not deleted when a model is updated.

If you associate a datum CSYS to parent geometry and the parent geometry is deleted when a model is updated, note the following:

  • A message tells you that other features will be affected if you continue the operation.
  • In the Part Navigator, an alert symbol appears for the associated datum CSYS feature, and the Alerts column indicates that the parent geometry is missing.

The datum CSYS is fixed relative to the absolute origin. You can edit the datum CSYS to move it dynamically or change its type and associate it to different parent geometry.

Example: a sketch and revolved feature are the parents of two datum CSYS features. When the sketch and revolved feature are deleted, the two datum CSYS features and their children are not lost when the model is updated. You can edit the datum CSYS features and associate them to new parent geometry at a later time.

Related

  • Create an offset datum coordinate system
  • Create a datum CSYS with an x-axis, y-axis, and origin
  • Datum CSYS
  • Datum CSYS examples
  • Datum CSYS dialog box

Updating and editing a datum CSYS, NX 2212 Series © 2023 Siemens

Source: https://docs.sw.siemens.com/en-US/doc/209349590/PL20220512394070742.modeling/create_features_modl_datumcsys_edit · retrieved 2026-07-10