B–63610EN/01
4. DESCRIPTION OF PARAMETERS
73
#7
1602
#6
LS2
#5
G8S
G8S
#4
CSD
#3
BS2
#2
COV
#1 #0
FWB
[Data type] Bit
FWB Cutting feed acceleration/deceleration before interpolation
0 : Type A of acceleration/deceleration before interpolation is used.
1 : Type B of acceleration/deceleration before interpolation is used.
Type A: When a feedrate is to be changed by a command,
acceleration/deceleration starts after the program enters the
block in which the command is specified.
Type B: When a feedrate is to be changed by a command, deceleration
starts and terminates at the block before the blcock in which the
command is specified.
When a feedrate is to be changed by a command, acceleration
starts after the program enters theblock in which the command
is specified.
F1
F2
F3
Feedrate
Time
N1 N2
F1
F2
F3
Feedrate
Time
N1 N2
Type A
Specified feedrate
Feedrate after acceleration/
deceleration before inter-
polation is applied
Specified feedrate
Feedrate after acceleration/
deceleration before inter-
polation is applied
Point 1
<Example of a deceleration process> <Example of a acceleration process>
Type B
To change the feedrate from F3 to F2, it is necessary to start reducing the feedrate at point 1.
COV The outer arc cutting feedrate change function of the automatic corner
override function is:
0 : Not used.
1 : Used.
BS2 Acceleration/deceleration after interpolation for cutting feed in
look–ahead control mode is:
0 : Exponential acceleration/deceleration or linear acceleration/
deceleration (one of which is selected by the LS2 parameter (bit 6 of
parameter No.1602)).
1 : Bell–shaped acceleration/deceleration.
BS2 LS2 Acceleration/deceleration
0 0 Exponential acceleration/deceleration after interpolation
0 1 Linear acceleration/deceleration after interpolation. (The
option for linear acceleration/deceleration after interpolation
for cutting feed is required.)
1 0 Bell–shaped acceleration/deceleration after interpolation.
(The option for bell–shaped acceleration/deceleration after
interpolation for cutting feed is required.)