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Messages - valenciaoranges

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General Mach Discussion / Re: G28.1 and Ref All Home Issue
« on: August 03, 2013, 08:33:15 PM »
Thanks for the clue on the xml indicating that inputs were not properly defined.  I have all the boxes checked in the config screens but some how the M0RefHome, M1RefHome, and M2RefHome were still showing values as 0 not 1.  So I corrected that directly by editing the .xml.  Then G28 would at least run the machine to the current zero point.  A little more research on Ajax indicated that they use M92 to actually zero out the machine.  M92 P1 Q2 R3 in the MDI line works perfectly; the machine kisses against the limit switches and backs of the prescribed 0.1" and sets the Machine coordinates to zero.

Does anybody know which boxes in the standard Mach3 Screens control the value of  M(0,1,2)RefHome?

 I am off to sort out getting Ajax to Drive the Fanuc Spindle.

Thanks again.

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General Mach Discussion / G28.1 and Ref All Home Issue
« on: July 19, 2013, 06:52:47 PM »
The Good: I have just set up a Kitamura MC0 with Fanuc DC Servos with an Ajax/Centroid controller. General tuning is complete. Limit switches on + travel are intended to be used as homing switches when called for.  Jog direction and limit switches are correlated (+Jog will activate + limit switch).

The Bad: If I hit the Ref All Home Button nothing happens.  If I put G28.1 X(value short of limit switch) the axis moves to this intermediate point (in working coordinate system/not machine coordinate system) and then stops.  If I put G28.1 X (Value past limit switch) the machine gives an "Axis X Position Error" Message. I have tried a G90 and G91 before the G28.1 (per forum suggestions) with no improvement.  I have X++, X--, X Home enabled in Config/Ports Pins/Inputs. I have tried both with and without "Homed true with no home switches".  If I select G28.1 No Initial Move the intermediate point move does not happen (so I unchecked that box). I have my soft min and Max set way beyond table travel so they are not involved.  I have tried with Auto Zero on and off with no effect.

Other facts that may or may not be important: I can not Jog off a tripped limit switch.  I either use hardware over ride and jog off or turn off machine and turn ball screw by hand to move off switch. I am using a demo copy to verify compatibility before purchase. Simple path G Code works fine.

I have attached .xml file.  Thanks for any insight that can be given.

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Hello, I am a hobby CNC user.  I have a 20 Yr old son who is my partner in crime in this endeavor.  He got us both hooked on this fun when he was on a FIRST robotics team. When our Garage Mill (1984 Kitamura MyCenter0) blew out the old Fanuc main board I started the retrofit project that was planned all along.  I have a Centroid / Ajax control going in.  Learning a lot through the process.  I am lucky enough to live in the Detroit area where there is access to a hardware at reasonable prices. Always thankful for the expertise that folks are willing to share.

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