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Author Topic: G91 is not recognized in M4 Turn 4.2.0.3196  (Read 2642 times)

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G91 is not recognized in M4 Turn 4.2.0.3196
« on: November 08, 2016, 08:52:00 PM »
When I try to execute a G91 from the MDI window, I get "Unknown G code used" error.

The Status line still shows the machine is in G90 mode.
Re: G91 is not recognized in M4 Turn 4.2.0.3196
« Reply #1 on: November 11, 2016, 11:11:05 PM »
Mach4 Turn is Fanuc style not Mach3 style...  U is the incremental axis for X and W is the incremental axis for Z.  If you command "G01 U1 Z1" the X will move out 1 inch from its current position and Z will move to part coord Z1.0.

You will also see that G99 is feed per rev and G98 is feed per min.

I attached the MachMotion lathe Gcode manual.. There should be one that also on the MachSupport website.

Thanks,
Andrew
Andrew
MachMotion
Re: G91 is not recognized in M4 Turn 4.2.0.3196
« Reply #2 on: November 11, 2016, 11:17:35 PM »
Andrew:

Thanks for this info.

So then, why does the status line in Mach4 Turn show G90?
Re: G91 is not recognized in M4 Turn 4.2.0.3196
« Reply #3 on: November 11, 2016, 11:21:30 PM »
Andrew:

Thanks for this info.

So then, why does the status line in Mach4 Turn show G90?

I think that is a display issue...
Andrew
MachMotion
Re: G91 is not recognized in M4 Turn 4.2.0.3196
« Reply #4 on: November 11, 2016, 11:22:37 PM »
I'm not sure what you mean by that.
Re: G91 is not recognized in M4 Turn 4.2.0.3196
« Reply #5 on: November 11, 2016, 11:49:15 PM »
I just went through all the codes shown in my "Modals" line, and the following codes are there, but don't appear in the Mach4 Lathe reference:

G15, G49, G67, G69, G90