problem coordinate system

[[Me...]]

Hello all,
I have a question to coordinate systems

My problem. I create a coordinate system as a base system, on this basis I measure a curve,
In evaluating the curve, I create the coordinate system WP_TCapto_bestfit_1 (*) of the curve as the basis for further measurements.

Furthermore, I create a coordinate system Koord.-System2, based on the WP_TCapto_bestfit_1 (*) (see picture), however without Planar Rotation.
[img][/img]

My question, do I absolutely have to define the Planar Rotation ?

Some colleagues say yes, because otherwise the value of the base system is used as the Planar Rotation. That would not be correct !!!

Other colleagues say if I define a new coordinate system, I have to define the Rotation in Space and also I must define the Planar Rotation.

Or I can leave the Planar Rotation field “blank” with the background that in my case the value Planer Rotation of WP_TCapto_bestfit_1 (*) still applies for the Koord.-System2.

I'm confused, what is correct ?

Unbenannt.PNG

[[Mi...]]

Based on the picture shown, Koord.-System2 will use the spatial rotation from WP_TCapto_bestfit_1, since that's what's selected in the dropdown beside the "comment" button.

[[Te...]]

Planar Rotation is not always needed and can be left blank. This is very common on turned parts with no clocking features. It doesn't matter how I place the part on the fixture to measure it I will get the same answer. If you wrote a program for a plug gage it would be a Cylinder and and a Plane for the Base Alignment.

Spatial Rotation (Rotation in Space for Calypso 2020) - Cylinder
Planar Rotation - BLANK
X Origin - Cylinder
Y Origin - Plane
Z Origin - Cylinder