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Concentricity error on Pc-Dmis 2020R2

MelissaM10
Hello, I'm having trouble switching to R2. I have three all with Pcdmis 2020R1. When I opened Pcdmis r2 anything with concentricity gave me errors.

The error message I get is : Concentricity tolerances require input features that are concentric with the datum reference frame.

Now I did not write these programs and I'm afraid to change anything with out knowing if it will change the results. These are all programs that are used for production checks.

Also I noticed the profiles don't have a plus or minus tolerance. Is the result still the same?

Any help understanding this change will help me greatly Thanks in advance!
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  • Your circle has a THEO vector along I (<1, 0, 0>Wink and your datum has a THEO vector along K (<0, 0, 1>Wink.

    In essence, you are asking PC-DMIS to compute the concentricity of two "perpendicular" circles, which is undefined.

    As far as your profile tolerance is concerned, the actual value for profile has been changed with ASME Y14.5.1-2019 such that the actual value is the quantity (t + 2g) where t is the size of the tolerance zone and g is the growth parameter. The tolerance zone expands or contracts about the nominal surface to fully enclose the measured surface. The amount that it expands or contracts is equal to g. Thus, a conforming part will have a negative value of g and a nonconforming part will have a positive value of g. The reported (MEAS) value in PC-DMIS is equal to the actual value of (t + 2g). This new interpretation does not change conformance, but rather yields a single actual value instead of the older definition which required two values (max/min).
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  • Your circle has a THEO vector along I (<1, 0, 0>Wink and your datum has a THEO vector along K (<0, 0, 1>Wink.

    In essence, you are asking PC-DMIS to compute the concentricity of two "perpendicular" circles, which is undefined.

    As far as your profile tolerance is concerned, the actual value for profile has been changed with ASME Y14.5.1-2019 such that the actual value is the quantity (t + 2g) where t is the size of the tolerance zone and g is the growth parameter. The tolerance zone expands or contracts about the nominal surface to fully enclose the measured surface. The amount that it expands or contracts is equal to g. Thus, a conforming part will have a negative value of g and a nonconforming part will have a positive value of g. The reported (MEAS) value in PC-DMIS is equal to the actual value of (t + 2g). This new interpretation does not change conformance, but rather yields a single actual value instead of the older definition which required two values (max/min).
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