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18 Measurement Functions
18 Measurement Functions
18.1 Skip Function (G31)
Instruction
G31 v (F) (P)
starts linear interpolation to the point of v coordinate. The motion is carried on until an external skip signal (e.g. that of a
P0: uses skip signal 1
P1: uses skip signal 2
P2: uses skip signal 3
P3: uses skip signal 4
If address P is not specified, control takes skip signal 1.
G31 is a
The speed of motion is
–the specified or modal value F if parameter SKIPF=0
–the feed value taken from G31FD if parameter SKIPF=1.
In the instant the external signal arrives, the positions of axes will be stored in the system variables specified below.
#5061.........position of axis 1
#5062.........position of axis 2
.
.
#5068.........position of axis 8
Fig.
The position stored there is
–the position assumed in the instant the external signal (if any) has arrived,
–the programmed
–to be understood invariably in the current work coordinate system,
–with the actual length compensation (G43, G44) and
–with the actual tool offset (G45 ... G48) taken into account.
The motion comes to a halt with linear deceleration after the external signal has arrived. Now the
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