I noticed something strange while trying to home the z Axis while logging the action. It occurred after I re-enabled Mach4 after the z axis home sequence shut down. What is strange is that after enabling the system the code for the homing sequence seemed to complete as expected and matched the code sequence on my functional y axis - nothing physically moved on my mill. I have attached a file with this information for reference.

I never found or was supplied a solution to my homing issue. I was in contact with the Tech9 support and they are also aware of the issue. The only thing that solved my problem was to use Mach3 and not Mach4.

Thanks for the update KingKerf.  I'm hoping the upcoming plugin will fix this problem.

polzsp can you put up screenshots of your ESS settings and the M4 input setting for homing and for your M4 estop setting

also have you seen what DazTheGas has done on you tube 

I've attached my ess homing inputs and mach4 homing, soft limits, and e-stop settings.  To answer your last question, yes I have been following and signed up for DazTheGas's youtube site - he creates some excellent videos. I haven't been back to visit his site since Sunday. Thanks for your time blockhead.....

oops forgot to post ess settings - please see attached.

ok motor 0 is x, motor 1 is y, motor 2 is z and motor 4 is A what I take is your slave for a start

you have -- and ++ for home thats your limits not home you are confusing mach you need to watch the ESS set up vids

I'll review the setup videos again and compare against my system. Just for reference, I've also included a screen shot of my mach4 axis mapping. Thanks for your time blockhead.

yep if you look at you pick you have X(0) what is X axis as motor 0, then you have it set as motor2 what is Z

then Y is correct with your slave as Motor0 what is the X axis

Z what is motor 2 you have it set as motor3 what is A axis

this is wrong you need to have everything set a certain way for the mapping to work other wise M4 will not work correctly at all

blockhead......YOU ROCK!!!!!!!! That fixed my problem - I can't believe I didn't see that earlier. Thank you very, very, very, much!!!!!