F4:Total Runout Validation
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Revision as of 21:22, 14 January 2026 by Admin (talk | contribs) (Created page with "{{Author Credit |author=Admin }} == Summary == F4 validates total runout against the ASME logic in the F4 Application and enforces datum, surface, modifier, and pattern rules. == Validation rules == * A primary datum reference is required; tertiary datum references are not allowed. * Total runout is valid only for surfaces that surround or intersect the datum axis. * Total runout cannot be applied to a pattern. * FOS linkage is not allowed for total runo...")
Summary
F4 validates total runout against the ASME logic in the F4 Application and enforces datum, surface, modifier, and pattern rules.
Validation rules
- A primary datum reference is required; tertiary datum references are not allowed.
- Total runout is valid only for surfaces that surround or intersect the datum axis.
- Total runout cannot be applied to a pattern.
- FOS linkage is not allowed for total runout in F4.
- Prohibited modifiers: diameter, LMC, MMC, projected tolerance zone, unequally disposed.
- Tangent plane is only allowed when the surface intersects the datum axis.
Warnings and errors
F4 behavior
- Missing datum
Total runout requires a primary datum reference; missing datums are rejected.
F4 behavior
- Tertiary datum not allowed
Total runout cannot reference a tertiary datum.
F4 behavior
- Invalid surface application
Runout must be applied to a surface that surrounds or intersects the datum axis.
F4 behavior
- Pattern not allowed
Total runout applied to a pattern is rejected.
F4 behavior
- FOS linkage not allowed
Total runout must not be linked to a feature of size in F4.
F4 behavior
- Prohibited modifiers
Diameter, LMC, MMC, projected tolerance zone, and unequally disposed are not allowed on total runout.
Examples
- Valid: total runout applied to a surface surrounding the datum axis with datum A.
- Invalid: runout with a tertiary datum or pattern application.