Profile of a plane to 1 datum

[[Ly...]]

How do you correctly evaluate profile of an opposing plane to one datum (A)? Since the profile characteristic MUST have all degrees of freedom constrained and all 3 datum reference slots have to be filled, what do you enter if there is only one datum being referenced on a drawing? The plane being evaluated has a basic dimension size from datum A, so I cannot use the parallelism characteristic.

[[Ma...]]

If datum A is a plane then it gives only planar. So it's like paralelism with distance lock.

For profile callout just fill all datums that datum plane A

[[Ro...]]

First create a sub alignment with only -A-. Resources -> Utilities -> Alignment. Open the alignment, then go to the bottom tool bar, click on the pullup menu (first icon on the bottom tool bar) and click on "Select Already Extracted Features" now click on the CAD Model where datum -A- is and close the sub-alignment. This will fill the sub-alignment in the appropriate slots. Now go to Resources -> Utilities -> Geometry Best Fit. Open that up and where you see alignment, select the sub-alignment you just created. Click on the button "Select Elements" and select the plane that the profile callout is to. Then click on "Evaluation Constraints" and Uncheck the degrees of freedom that Datum -A- controls. close the Geometry Best Fit window. Now get your Profile characteristic, open that up and enter the plane in the features button. Towards the bottom of the Profile window, you will see a pulldown menu next to "Datum Reference Frame". Click on the pulldown menu -> Alignment -> Geometry Best Fit. Done.

[[Ly...]]

Thank you. I will try your method Roy and see what I get. I did try an alternate way to evaluate the plane. I recalled the plane points into a Free Form Surface and then put the Free Form Surface into a Profile Characteristic. From doing research online, a Zeiss user posted that Free Form Surfaces are able to be evaluated as Profiles without it being fully constrained, so that is the route I took. I entered datum -A- for the 3 datum reference slots in the Profile characteristic and Calypso seemed to calculate it correctly. Does anyone know if this is a reliable method?

[[Ch...]]

There are a few different methods that can be used for accomplishing this.

From the ZEISS Portal Knowledge Base:
Calypso: Profile of Prismatic Features with Unconstrained Datum Reference Frames https://portal.zeiss.com/knowledge-base?id=868503

Additionally CALYPSO 2023 introduces a new GD&T Library for form and location that can also be used to avoid some of the setup steps that were needed in the past. The new GD&T Library Beta can be activated in CALYPSO 2023+. It's hasn't gone fully public yet but can be used if you wish.
Tools / Settings / Miscellaneous / Licenses => "GDT_Engine_Beta"
ZEISS CALYPSO 2023 – New GD&T Library Video: https://portal.zeiss.com/iqr-academy/vi ... trEwZ-7yq-