Siemens SINUMERIK 840D sl Programming Manual page 201

Default value FENDNORM deactivates the function of the automatic corner override.
Note
This function is not part of the standard scope of SINUMERIK and must be activated for the
relevant software versions.
References:
/FBA/ Functional description ISO Dialects.
Programming
FENDNORM
G62 G41
or
G621
Parameters
FENDNORM
G62
G621
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.
Job planning
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
5-37