help mach3

[haron]

Hello all the world, I have a problem on mach3, if somebody can help me and thank you for avance.j' have to break a right(straight) axis of engine of my machine cnc; having to re-counter I lost every my regulation having to arrive has all to settle(adjust) my measure are not well I have to try to repair with (axis calibration on mach3) but the speed changes and when I settle(adjust) the speed of the engine measures them gets lost, then I arrive not has to take(bring) out me of it.
How to register(record) my regulations of speed and distances without that mach3 change them every time; and other thing(matter) if he(she) can help you all measures are metric

[rbailey41]

  I need help. When I take the voltage readings on the parallel port I get 3.2 volts but, as soon as I start Mach3 all my voltages fall to zero. Can anyone help.
Thank You rbailey41

[Hood]

haron
Can you attach your xml please.

rbailey41

It could be normal as it may be the way you have the active state in Mach. One thing to mention however is with a 3.2v port you will likely need a breakout board that can buffer the signal, so if you dont use a breakout that does that then you may have issues with low voltage.
Hood

[rbailey41]

Thank you. I'll check to see if anything is active.

[rbailey41]

  I finally got my motors to turn, but now when I jog x the motor only turns in the positive direction. Can anyone help me out. I checked the number 4 pin on my parallel port and it stays at 4.2 volts when I press my left and right arrow keys. Thank You

[Hood]

Sounds like you may not have the Direction Pin assigned properly in Mach, one thing that is often missed is the port number needs to be put in for both the Step and the Direction.
Hood

[rbailey41]

thank's alot your help was great. I finally got my motors running right, But, wondering if you could help me with the motor tuning. I am using 1/2-13 lead screws and I don't know how to figure the steps per inch.

[Hood]

Steps per inch are easily worked out as follows
Steps of stepper (normally 200)  multiplied by microstepping multiplied by any gearing and then finally multiplied by the TPI of your screw(13 in your case)
Hood

[rbailey41]

Thanks for your help. Would you happen to know the best velocity to set it at.

[Hood]

Afraid not, with steppers acceleration and velocity are trial and error.
Hood