Expression values compare = within a tolerance value, NX11

[3dr]

I need to be able to compare 2 expressions and report whether they are within a specified tolerance.

For now that reporting result can be numeric. 911 would work fine.

I've found that "bounding bodies" used for measurement and reporting to a parts list sometimes loose associations.
Having this in place for parts coming out of a library would provide some degree of quality control.

Does anyone have a solid method for doing this?

Greater than and less than logic is a heavier weight solution than it first appeared to be.

"ug equal" seems like it might be a fit but I'm not sure what it's supposed to do.

I managed this string and it's not in an error state.
ug_equal( L_ACTUAL, PLG_L, "tol", ERROR_DEV )

But this is my limit.

Dave
Automotive Tooling / Aircraft Tooling / Ground Support Structures

NX9, Win 7 Pro SP1

 

[TaylorAnderson]

Are you just looking for something simple like this?

[pre]if ( abs(exp1 - exp2) < 0.0001 ) then (1) else (911)[/pre]

[If the absolute value of the difference between exp1 and exp2 is less than the tolerance, then 1, else 911.]

Does that get you there?

Taylor Anderson
NX Product Manager, Knowledge Reuse and NX Design
Product Engineering Software
Siemens Product Lifecycle Management Software Inc.
(Phoenix, Arizona)

 

[3dr]

That has application but I've got "ug_equal" working and it's doing a good job for me.

Dave
Automotive Tooling / Aircraft Tooling / Ground Support Structures

NX9, Win 7 Pro SP1