I would like to set a keyboard shortcut to start the auto touch plate lower left x,y,z homing process.
My CNC is in another room from the router and I am using a wireless keyboard to jog the machine to the auto touch plate.
It would be nice to start the touch plate calibration from the wireless keyboard instead of going back to the computer.
It looks like a PLC script may be the way to go. Can anyone let me know if I am on the right track and how to learn the scripting language?

There are probably several ways to do it.
Here is a document to help you start on the LUA scripting.
https://www.machsupport.com/forum/index.php?topic=45397.msg289143#msg289143

Bill