View source for F4:Total Runout Validation

{{Author Credit
|author=[[User:Admin|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 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
|type=error
|title=Missing datum
|body=Total runout requires a primary datum reference; missing datums are rejected.
}}
{{F4 Behavior
|type=error
|title=Tertiary datum not allowed
|body=Total runout cannot reference a tertiary datum.
}}
{{F4 Behavior
|type=error
|title=Invalid surface application
|body=Runout must be applied to a surface that surrounds or intersects the datum axis.
}}
{{F4 Behavior
|type=error
|title=Pattern not allowed
|body=Total runout applied to a pattern is rejected.
}}
{{F4 Behavior
|type=error
|title=FOS linkage not allowed
|body=Total runout must not be linked to a feature of size in F4.
}}
{{F4 Behavior
|type=error
|title=Prohibited modifiers
|body=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.

== Related pages ==
* [[GDT:Total Runout]]
* [[F4:Compliance Logic]]

[[Category:F4 Behavior]]