Freeform Surface - PCM

[[Cl...]]

I have a program for an eight-part family. Two of the features are freeform surfaces.
The part grows only in the Y+ direction. How do I create a variable in the para file
for these two freeform surfaces?

[[Ch...]]

Use an 'alignment' for the FFS which offsets in Y.

In the alignment, in the offset field will be your PCM 'variable'

Declare this var in PCM advanced parameters and in presettings. May also need operator input to specify which variable, etc.

[[Cl...]]

Thanks Chris. Actually, I knew the process. I just didn't know where to get a Y value to start with, as a FFS doesn't
display a nominal Y coordinate like a point, line, plane, etc. So, where do I get that beginning Y coordinate? Also it
tuns out that the surface extracts as a cylinder, which I didn't know initially, so I ended up using that instead.

[[Ch...]]

You probably want to use : inquireParameterList
which can prompt operator at start to input Family, # 1 - 8.
This Variable will be a Y offset value.

THe FFS should have its own alignment. In that alignment for the Y offset instead of a value you will type your Variable, depending on operator input your alignment for FFS will be shifted everytime.

Make sense ?

[[Cl...]]

Yes, thanks.

[[Cl...]]

I have a PCM program (8-part family) only grows in Y+ (.040"). I need the PCM code/formula
to move the 25° plane shown in the attachment. I'm thinking that because the plane is relative
to the base alignment, just a Y variable should do it? Or is there more to it as it's an angled surface?

Thanks in advance!