The Repeatability, or Return, File System is used when it is necessary to pass Isogen-generated data back to the 3D design software.
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Not all 3D design software supports this system.
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Option Switch 109 also contains a non-repeatability function. Position 6 controls the action of component re-ordering in by-passes. This re-ordering function is performed by default when you set OS 109 Pos 6 = Blank.
To correctly generate spools in a by-pass, such as the one in the following illustration, Isogen requires that the closure point be at either one of the two locations (A).
However, the Intermediate Data File (IDF) extraction software of some 3D design products sets the closure point at location B.
Set OS 109 Pos 6 = 0 or OS 109 Pos 6 = Blank to cause Isogen to also set the by-pass closure point at the preferred location.
If this setting proves problematic, set OS 109 Pos 6 = 1.