About Controlling Model Space Parameters When Exporting to CATIA

Interface > Working with Data Exchange Formats > CATIA > Importing and Exporting to CATIA V4 > About Controlling Model Space Parameters When Exporting to CATIA

For the exported CATIA V4 .model file to open correctly in CATIA, you must ensure the accuracy of the geometric data in the exported file by setting accuracy values. You must select the following CATIA V4 export parameters options in the Advanced section of the CATIA V4 export profile:

• ident_crv

• ident_pnt

• infinity

• model_sz

• sag

• step

You can set any value or the recommended value that is based on a standard model size. The recommended tolerance values are based on the correlation between a standard model size and the parameters.

If you assign values other than the recommended values and open the exported part in CATIA, an error message displays the current tolerance value against the recommended values.

The following table shows the CATIA V4 export profile options with their values in CATIA for the corresponding parameters in Creo. The default values for the parameters are based on the standard model size of 10000.

Parameter in Creo	Model Data in CATIA	Export Profile Option	Recommended Values in CATIA
Model Size	Model Size	model_sz	10000
Tolerance Curve	Identical Curve	ident_crv	0.1
Tolerance Point	Intersection Projection	ident_pnt	0.001
Tolerance Line	Infinity	infinity	100000
Tolerance Sag	Bending	sag	0.03
Tolerance Distance	Step	step	20

If you set the model space parameter options and also use the CATIA start parts, the model space parameter values of the designated CATIA start parts override the values of the CATIA V4 export profile options.