Siemens SINUMERIK 840D sl Programming Manual page 201

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Default value FENDNORM deactivates the function of the automatic corner override.

This function is not part of the standard scope of SINUMERIK and must be activated for the

relevant software versions.

/FBA/ Functional description ISO Dialects.

G62 only applies to inside corners with

• active tool radius offset G41, G42 and

• active continuous-path control mode G64, G641

The corner is approached at a reduced feed rate resulting from:

F * (override for feed rate reduction) * feed rate override

The maximum possible feed rate reduction is attained at the precise point where the tool is

to change directions at the corner, with reference to the center path.

G621 applies analogously with G62 at each corner, of the axes defined by FGROUP.

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Programming Manual, 03/2006 Edition, 6FC5398-2BP10-1BA0

5.10 Feed reduction with corner deceleration (FENDNORM, G62, G621)

Automatic corner deceleration OFF

Corner deceleration at inside corners

when tool radius offset is active

Corner deceleration at all corners

when tool radius offset is active

Special Motion Commands