Thanks for your help, hope you have some answers. How it is wired is only one input on pi 13 of TB6, this is connected from +24 volts through the switch and back to pin 13 with NC switch. I had selected Z both home+limits I also entered the All home on pin 39 on tb 3 so it puts the All Home on the main screen, shown in the screen shot. When I use the Z arrow to move the Z or hit Z home in the lower left.
The Z axis will move but the switch push does nothing to stop it.
Also I have tried to use Hal show watch to see the switch in action but cannot find any signal name the shows it switching. If in the Pncconf I put the pin 13 for E stop and watch E stop it works just fine. I was told to use TB3 for selecting E stop for the correct operation of the E stop button on the main screen. Now in Pncconf there is only a I/O connector 3 so I hope that is TB3. as it seems to add GPIO to the name in Hal. I have lots of experience with other CNC software and BOB board but none for Linuxcnc.
