[Farmer]

All the info I have says that this G code (G47) should be available, and that it can be canceled with a G48, but my control will not let me insert either one into a line/block. It will allow G4, but when I attempt to insert the 7 or 8, the control will not even display the digit.

The G47 allows the control to act on a series of blocks as if they are one, and I would like to use it to cause the tool to correct an "hourglass" type taper in a 2" long OD turn in which the deflection of the workpiece forces me to comp the toolpath near the center of the turn to get rid of a .001" undersize. The problem with this approach is that at the center of the Z axis move the tool hesitates and causes a distortion as the control moves from one block of programming to the next. The G47 should force the control to move between these two blocks without hesitation, or at least I think it should.

Could there be a parameter setting that I am missing, or is this command not available on the 8025TG?

I would appreciate any info, or maybe you could try it on your control to see if yours will accept the G47.

Here is the code that I would like to use:

N120 G01 X-0.530 (Finish Turn Diameter)

N130 G47 X-0.531 Z-0.9825 (Taper Length of Turn)

N135 X-0.530 Z-1.965

N140 X-0.600 Z-2.230 (15 Deg Angle Finish)

N145 G48 (Cancel G47)

N150 G00 X-0.650 Z-0.100