Datum not computed during creation

[[El...]]

Hello,

I'm currently comparing a CAD file and a mesh, and when I try to create datums points, I click on different planes on my CAD, but they all show up as "not computed" Do you know why? How can I fix this?

In all the videos I've watched, no one seems to have this problem

[[Na...]]

Hi Elyes,

are CAD and mesh aligned and the planes have a measuring principle assigned? 

There is a short tutorial on youtube:

Nanno

[[Ma...]]

Surelly in video those steps:

1. Prealignment
2. Creation of points on CAD model
3. Using them as RPS

After element creation you have to set measuring principle - unless you have created element via selection on mesh - but that way you would have only green elements ( not blue )

Also you can have disabled automatic refresh so you would need to recalculate manually to see changes.

[[El...]]

Hi, thanks for your reply! This is my first time using inspection software, so I don't understand everything yet, haha.

The measurement principles are set up, and I can create my datum points, but I can't seem to get the results I want. Specifically, I need to compare a surface profile against a reference system. As you can see in the photo, I can check the surface profile without a reference, but once I have my reference point, the surface profile function in the GD&T Quick Creation menu no longer appears.

I have something more to do ? Maybe my datum points are not right ?

[[Ma...]]

Well what i am used to do is making datum system from "Construct -> Local coordinate system -> Create Datum System" and "Create Datum System (nominal)"

You have more options there, but you have to do nominal and then the same without "nominal" - this will create blue and green alignment, which can be then used in Main alignment and as datums for profiles and so on.

Also you can do basic with "Construct -> Local coordinate system -> By Geometric Elements" - fill out elements - what goes first it takes whatever freedom it can
Now you can define mesuring principle ( Refferenced contruction ).

Now do as in this screen