Many thanks. I will do a few tests using various options.
FYI, my VFD allows me to disable the REV direction (which I have already done to prevent broken end mills!!)
Many thanks again.
Posts made by TonyPagett
Spindle speed control
I want to add a PWM output from my Duet3D board to control a VFD and spindle.
I have a PWM to voltage (1-10v) board that converts a PWM value into voltage. (5v =50%, 10v=100% etc) that connects to my VFD.
Can I use heater 4 (on pin 13 of the Duet board) as a PWM output by using the following in my post processor?
M307 H4 A-1 C-1 D-1 -- to disable heater 4
M42 P4 Snnn --to send a PWM value
RE: Laser power adjustment/speed
@dc42 Thank you.
My next question is this. The following code moves the laser (CNC) in the defined square but only switches the laser on for the first line (or one side of the square).
G1 Y75.0000 Z0.01000 F2500.0
If I add an S command to each line it works OK
Is there a way round this?