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Legacy dimension - profile of a surface

First of all, I am aware this topic has been covered, but my google-fu failed to find a solution for my current conundrum.

All that follows is relative to PC-DMIS 2012

Part setup:
Datum A: Cylinder along Z, locking X, Y and two rotational DoF
Datum B: Plane perpendicular to A, locking Z
Datum C: Plane perpendicular to B at 5.5 basic from A's axis, locking the last rotational DoF

Callout:
Profile of a surface of datum C relative to datum A

The issue:
While this is pretty straightforward to do with exact dimensions, the report template at my current workplace plays nicely only with legacy dimensions.
The result of legacy profile of a surface (form and position, LSQ best fit) while aligned to ABC are different (worse) than exact above.
To my understanding this is to be expected as legacy "form and location" fits to the current alignment, which is restricting 6 DoF instead of just 4 as Datum A alone would.
If this is the case, is there any way to use legacy with the callout that I have?
Parents
  • It could be related to the UseSizeForProfileDimensions registry setting maybe. There was a change to the 2009 version of the ASME Y14.5 standard which meant that size should be taken into account when reporting a form only legacy profile dimension. The UseSizeForProfileDimensions registry setting is essentially a switch that allows the user to revert to pre 2009 behaviour. If set to 0 profile calculations do not take size into account (as per ASME Y14.5 1994), if set to 1 they do (As per ASME Y14.5 2009 onwards). The only other thing I can think of is if the bestfit type is not the same for both calculations or if there is a difference between my version of PC-Dmis and yours. I am only able to install as far back as PC-Dmis 2013 on my laptop since older versions are not compatible with windows 10 - they give an "unsupported operating system" error and abort if you try to install.
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  • It could be related to the UseSizeForProfileDimensions registry setting maybe. There was a change to the 2009 version of the ASME Y14.5 standard which meant that size should be taken into account when reporting a form only legacy profile dimension. The UseSizeForProfileDimensions registry setting is essentially a switch that allows the user to revert to pre 2009 behaviour. If set to 0 profile calculations do not take size into account (as per ASME Y14.5 1994), if set to 1 they do (As per ASME Y14.5 2009 onwards). The only other thing I can think of is if the bestfit type is not the same for both calculations or if there is a difference between my version of PC-Dmis and yours. I am only able to install as far back as PC-Dmis 2013 on my laptop since older versions are not compatible with windows 10 - they give an "unsupported operating system" error and abort if you try to install.
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