quote: If you change parameter 5006 #6 ( bit 6 ) from 0 -> 1 the control should cancel G49 without any movement. Cheers. Not had chance to try it yet. They gave me some real work to do.

quote: I guess G43.1 is the same I used to program using G43.1 on a Mazak with Fanuc control, and that allowed G91 G28 Z0 followed by a G49 without the operator panicking Z dive. I've just dug this up at home - G00 G17 G21 G40 G49 G80 G90 G91 G30 Y0. Z0. A0. B0. T1 M6 G90 G00 A0. B0. S1000 M03 G00 G90 X339.0 Y-141.5 A0.0 B0.0 M03 G43.1 H1 X339.0 Y-141.5 Z41.9 A-17.0 B0.0 M08 { { G01 X-314.0 Y-154.664 Z-1.066 G00 X-314.0 Y-141.507 Z41.968 G40 M09 G00 G90 A0.0 B0.0 G00 G91 G28 Z0.0 M5 G49 Y0.0 M01 M99 Maybe it's a Mazak thing, or the two codes allow different commands. I'll have another play tomorrow. If I can get the machine to the Z & X home position using G53, as long as no one is stood under the tool, then the Z dive should be OK . Thanks Again.

Thanks guys. I've found the parameters for the pivot point. But not found one yet for G49. I'd rather it didn't move, just in case my tool is longer than the safe move Or the safe move is longer than the travel left. I'll take the Fanuc manual home for some light reading, or give them a ring. Cheers.

We have a new 5 axis router with a Fanuc 18i M PC based control, and are in the process of sorting out the post and getting the hang of G43.4. Previously we have always programmed by telling the post the tool length and pivot point, then letting the post do the maths. But now we want to use G43.4. At the moment to get it roughly working the way I think it should- I have to add the tool length of 204mm (tool tip to spindle face) and the pivot distance of 170mm (pivot point of the B & C axis to the spindle face) and enter the total in the tool offset table i.e. 374mm. This make the tool tip behave correctly, but the toolpath starts 170mm to high. If I only enter the tool length, the toolpath starts at the right height, but the tooltip is all over the place. So I'm guessing there must be a parameter for the pivot distance that has not been configured on our machine? Also I've got it coming on OK, but having trouble turning it off. We normally finish our programs with G05 P0 G91 G28 Z0. G91 G28 X0. Y0. B0. C0. G90 G49 G40 G80 M30 But this alarms out on the G91 G28 Z0 line. If I add a G49 G05 P0 G49 G91 G28 Z0. G91 G28 X0. Y0. B0. C0. G90 G49 G40 G80 M30 I works OK, but the tool comes down in Z by the tool offset value on the G49 line. How do you get around this? And just to double check. G43.4 takes care of the feed rates also, so no need for inverse time feed? And can you use it for normal 2.5D and 3D surfacing paths? Thanks for your help.