Thanks for your reply!.
In my version of MACH3 (R1.84.001) there is a check box in "Config, Logic" tab, labeled "Use Safe_Z" but I do not see any way to enter specific parameters that define Safe_Z. I also can not find the screen that you show in your post. It must be in a different version of MACH3. Also, it seems that the "Home Off" settings in the Home/Limits tab only affect the DRO value during Homing, but does not change the actual position of the axes. For example, if I put the value 5.00 for the X Home Offset, the axis will stop on the Home switch as usual, but the DRO will indicate a position of +5.00.
I think the Safe_Z function will do what I need but I may have to switch to a different version of the program. Any further assistence would be greatly appreciated.
Thanks again!