Hello there, the speed feedback is made by the controller? or the Tach seen in the motor shaft goes to the PC parallel port? and is controlled by the mach3? I mean, do you use any input to the PC? Great Explanation!!!
The speed feedback is coming from a CNC4PC C3 -index pulse card that connects to an input on the Breakout board for the parallel port. What I have done is used the index card as a tachometer so that Mach3 can calibrate the pulses to the correct speed of the motor within a few RPM. It is certainly close enough for milling.
I use a CNC4PC c11g board going to a C3 index card.
that is part of the spindle speed such as m3 s2000 or in reverse m4 s2000
cnjdavis618 1 year ago
Depending on the tool I switch out the M3 command for M4
cnjdavis618 1 year ago
What command is used to reverse the motor in Mach 3?
eartaker 1 year ago
Hello there, the speed feedback is made by the controller? or the Tach seen in the motor shaft goes to the PC parallel port? and is controlled by the mach3? I mean, do you use any input to the PC? Great Explanation!!!
lyntoncnc 1 year ago
@lyntoncnc
The speed feedback is coming from a CNC4PC C3 -index pulse card that connects to an input on the Breakout board for the parallel port. What I have done is used the index card as a tachometer so that Mach3 can calibrate the pulses to the correct speed of the motor within a few RPM. It is certainly close enough for milling.
I use a CNC4PC c11g board going to a C3 index card.
cjdavis618 1 year ago
So this is what you buy with the money from an MPG? Good to see you.
CncObsession 1 year ago
@CncObsession Lol, you too. That was on my bench the day you were here. I had just got done filming that clip. :-)
cjdavis618 1 year ago