14 The Tool Compensation

If zero displacement is programmed (or such is produced) in the block containing the activation of compensation (G41, G42), the control will not perform any movement but will carry on the machining along the above-mentioned strategy.

...

N10 G40 G17 G0 X0 Y0

N15 G91 G42 D1 X0

N20 G1 X80

N25 X30 Y60

...

If a displacement of 0 is obtained in the selected plane in the block following the start-up of compensation, the compensation vector will be set at right angles to the interpolation performing the setting-up. The path of the tool in the next interpolation will be not parallel to the programmed contour:

...

N10 G40 G17 G0 X0 Y0

N15 G91 G42 D1 X80

N20 G1 X0

N25 X30 Y60

N30 X60

...

Fig. 14.5.1-8

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NCT Group 2000M, 99M manual N10 G40 G17 G0 X0 Y0 N15 G91 G42 D1 N20 G1 N25 X30 Y60