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.