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J
jonesc1-Visitor
1-Visitor
August 24, 2011
Question

Circular reference files

  • August 24, 2011
  • 2 replies
  • 1784 views
Pro/E users and those that have moved on to bigger and better? things,

What prompts Pro/E to write a crc file?

Besides the obvious that the assembly has circular references of course!

Is the file written when opening the assembly, saving or some other trigger?

I have an assembly that I know has a crc and would like to delete the .crc file then re-create it with the un-modified assembly to make sure it has not been fixed since the .crc files was written in my folders.
I will then delete it again and once I think I have fixed the problem, see if it re-occurs.

W4, M133 PDMLink


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2 replies

S
23-Emerald III
StephenW23-Emerald III
23-Emerald III
August 24, 2011
Craig,
It generates the CRC file upon regeneration.

I was told one time there are 4 specific ways to make a CRC. Unfortunately I cannot remember them all but here are the ones I do know.

My favorite example to tell users what a circular reference is: Sometimes I add an empty part to an assembly and constrain it using the default part datums. Then, in the assembly, I activate the part and create part geometry using the assembly as reference in the sketch. At some point in time later as I am changing the design, I redefine the placement from the datums of the part to the surfaces of the part and abracadabra, I just made a CRC. Since the part references the assembly, it doesn't know how to build itself until it is placed and since it doesn't know how to place itself until it is built. Round and round and round. It doesn't fail, it just generates the CRC. It slows down the model.


Restructure - when you do a restructure, the resulting references sometimes create CRC

Edit references - can create them also

Steve

B
bfrandsen10-Marble
10-Marble
August 24, 2011
Craig,
the fastest way I have found to make Pro/E create the .crc file is by
using the Regenerate Manager.

If CRC's exists a .crc file is written without even regenerating anything.
Just select Cancel in the Regenerate Manager dialog.

Regards,
Bjarne




"Lobban-Jones Craig (Consultant)"
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24-08-2011 04:32
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Subject
[proecad] - Circular reference files






Pro/E users and those that have moved on to bigger and better? things,

What prompts Pro/E to write a crc file?

Besides the obvious that the assembly has circular references of course!

Is the file written when opening the assembly, saving or some other
trigger?

I have an assembly that I know has a crc and would like to delete the .crc
file then re-create it with the un-modified assembly to make sure it has
not been fixed since the .crc files was written in my folders.
I will then delete it again and once I think I have fixed the problem, see
if it re-occurs.

W4, M133 PDMLink
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