
B-63783EN-1/01 7.FEEDRATE CONTROL/ACCELERATION AND DECELERATION CONTROL
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7.1.6 Feedrate Inverse Time Specification
Overview
Feedrate of the tool can be specified by the move distance of the block
and inverse time (FRN).
- Linear interpolation (G01)
FRN=1/Time(min)=Speed/Distance
Speed : mm/min (metric input)
inch/min (inch input)
Distance: mm (metric input)
inch (inch input)
- Circular interpolation (G02, G03)
FRN=1/Time(min)=Speed/Circular radius
Speed : mm/min (metric input)
inch/min (inch input)
Distance: mm (metric input)
inch (inch input)
NOTE
In circular interpolation, the distance is not an actual
distance of the block but the speed is calculated from
the circle radius.
Caution
CAUTION
1 When the cutter compensation function is used,
programmed commands are subject to
compensation before travel, so that the actual
feedrate may be different from the specified feedrate.
When the cutter compensation function is used,
inverse time mode must not be used.
2 When F0 is specified, the feedrate is equal to the
maximum cutting feedrate.
3 In inverse time mode, F codes are not regarded as
being modal and, therefore, an F command is
required for each block.
Alarm and message
Number Message Contents
PS0202 NO F COMMAND AT G93 F codes in the inverse time specification mode (G93) are
not handled as modal, and must be specified in individual
blocks.
Reference item
Series15i/150i-MB
Operator’s Manual
(Programming)
(B-63784EN)
II-5.3 Cutting feed