
B–63833EN–1/02
7. FEEDRATE CONTROL/ACCELERATION
AND DECELERATION CONTROL
305
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
allows a rapid traverse override of between 0% and 100% to be applied
in 1% steps.
[Function] This signal indicates that a move command is executed at rapid traverse.
[Output condition] “1” indicates that an axis starts moving after rapid traverse has been
selected.
“0” indicates that an axis starts moving after a feedrate other than rapid
traverse has been selected. This holds true for both automatic and manual
operation modes.
7.1
FEEDRATE
CONTROL
7.1.1
Rapid Traverse Rate
General
Signal
Rapid traversing signal
RPDO <F002#1>