
B–63173EN–1/01
7. FEEDRATE CONTROL/ACCELERATION
AND DECELERATION CONTROL
250
The feed functions control the feedrate of the tool. The following two feed
functions are available:
1. Rapid traverse
When the positioning command (G00) is specified, the tool moves at
a rapid traverse rate set in the CNC (parameter No. 1420).
2. Cutting feed
The tool moves at a programmed cutting feedrate.
Override can be applied to a rapid traverse rate or cutting feedrate using
the override signal.
The positioning command (G00) positions the tool by rapid traverse.
G00 IP_ ;
G00 : G code (group 01) for positioning (rapid traverse)
IP_ ; Dimension word for the end point
In rapid traverse, the next block is executed after the specified rate
becomes 0 and the servo motor reaches a certain range set by the
parameter (No.1826) (in–position check).
A rapid traverse rate is set for each axis by parameter No. 1420, so no rapid
traverse rate need be programmed.
The following overrides can be applied to a rapid traverse rate with the
rapid traverse override signal:F0, 25, 50, 100%
F0: Allows a fixed feedrate to be set for each axis by parameter No. 1421.
In addition, the use of the 1% rapid traverse override selection signal
enables a rapid traverse override of between 0% and 100% to be applied
in 1% steps.
#7
1401
#6
RDR
#5 #4
RFO
#3 #2 #1
LRP
#0
[Data type] Bit
LRP Positioning (G00)
0 : Positioning is performed with non–linear type positioning so that the
tool moves along each axis independently at rapid traverse.
1 : Positioning is performed with linear interpolation so that the tool
moves in a straight line.
RFO When cutting feedrate override is 0% during rapid traverse,
0 : The machine tool does not stop moving.
1 : The machine tool stops moving.
7.1
FEEDRATE
CONTROL
7.1.1
Rapid Traverse Rate
General
Parameter