
B-63783EN-1/01 13.MEASUREMENT
- 1409 -
(1) At point A, the machine touches a measurement object then
stops. At this point, the torque limit has not yet been attained.
So, a move command is output continuously without a skip
operation, thus updating the current position of the CNC.
(2) Although the move command is still output, the machine
remains stopped. As a result, an inconsistency (error) is
generated between the current CNC position and machine
position, and a torque is applied to the servo motor at the
same time.
(3) As the torque attains the torque limit, skip operation is
performed from machine stop position, point A, after which
N2 is specified. Let point B be the current position of the
CNC when the torque limit is attained. Then, the error at the
time of the torque limit skip is (A - B).
Example:
N1 G31 P99 Q50 Z400.0 F100.0 ;
N2 G01 X300.0 F500.0 ;
100.0 200.0
300.0 400.0
100.0
200.0
300.0
N1
N2
B
A
C
Error amount
Z
A : Machine stop position
B : Current CNC position when the
torque limit has been attained
C : N1 command end position