I currently have an arduino controlling some servo powered coolant nozzles manually with knobs.  Looking for some help or guidence on  how get the TLO from mach3 to the arduino using modbus.

   Have tried some of the cycle start and feed rate samples given here others and have gotten them to work.  But they were data from the arduino to mach3. I'm looking at getting data from mach3 to the arduino.

   My goal is this ,tool length DRO through modbus  to  the arduino , coolant nozzle angle is ajusted  automaticly.

   What does the arduino see ? Is it the actual DRO number (say 2.5 inches ) or some long number bit.

    The arduino program is the first program I wrote.

   This is a video of  the system .    
http://www.youtube.com/watch?v=TuQfmgIUduA
  

Hi Bozidar,

Thanks for posting your excellent video. 

(I have difficulties clearing the mineral filler from laser cut acrylic (Corian) and currently use two air nozzles, alternately pulsed but I can see the advantage in sweeping the nozzle directions so you have just set me off on a new project  )

Tweakie.