B–63980EN/01
4. DESCRIPTION OF PARAMETERS
117
#7
6200
#6
SRE
#5 #4
HSS
#3 #2 #1
SK0
#0
SKF
[Data type] Bit
SK0 This parameter specifies whether the skip signal is made valid under the
state of the skip signal SKIP.
0 : Skip signal is valid when these signals are 1.
1 : Skip signal is valid when these signals are 0.
HSS 0 : The skip function does not use high-speed skip signals.
1 : The skip function uses high-speed skip signals.
SRE When a high-speed skip signal is used:
0 : The signal is considered to be input at the rising edge (0 ³ 1).
1 : The signal is considered to be input at the falling edge (1 ³ 0).
SKF Dry run, override, and automatic acceleration/deceleration for G33 skip
command
0 : Disabled
1 : Enabled
#7
SPE6201
#6 #5 #4 #3 #2 #1
SEB
#0
SEA
[Data type] Bit
SEA When a high speed skip signal goes on while the skip function is used,
acceleration/deceleration and servo delay are:
0 : Ignored.
1 : Considered and compensated (type A).
SEB When a high speed skip signal goes on while the skip function is used,
acceleration/deceleration and servo delay are:
0 : Ignored.
1 : Considered and compensated (type B).
NOTE
There are two types of compensation: Types A and B. With
the skip function, the current position is stored in the CNC
according to the skip signal. However, the current position
stored in the CNC contains servo delay. The machine position
is therefore deviated by the servo delay. The deviation can be
obtained from the position deviation of the servo and the error
generated due to feedrate acceleration/deceleration
performed by the CNC. If the deviation can be compensated,
it is not necessary to include the servo delay in measurement
errors. The deviation can be compensated with the following
two types by the parameter as follows:
(1) Type A: The deviation is the value calculated from
the cutting time constant and servo time
constant (loop gain).
(2) Type B: The deviation is the error due to
acceleration/deceleration and the position
deviation when the skip signal goes on.
4.22
PARAMETERS OF
SKIP FUNCTION