Messages

1

General Mach Discussion / Hardware requirements for backlash compensation on Mach3

« on: December 07, 2020, 11:36:17 AM »

I keep seeing people on various forums stating that certain BOBs do not support backlash compensation.
My understanding is that Mach3 simply adds steps when reversing direction to compensate for backlash.
How does BOB hardware have any effect?

2

Mach Screens / Show RPM on screen

« on: August 08, 2019, 02:16:04 PM »

What do I do to modify a screen to show the spindle RPM.  I have it working electrically.
The current screen just shows set point.

3

General Mach Discussion / Re: Need help with ports and pins

« on: March 24, 2017, 08:12:13 AM »

Thanks. 

I tried using pin 1 and it worked!  Dont know why pin 17 does not work. 

Need to buzz out from cable that plugs into computer port thru to breakout board. 

Also check signal on computer port.

Thanks again.

4

General Mach Discussion / Need help with ports and pins

« on: March 23, 2017, 01:29:03 PM »

I have Mach 3 set up on my mill.  I have

enabled flood mist control in ports and pins - spindle set up
Flood M8 output is set to Output #3
in ports and pins - outputs
enabled output #3
set port to one and pin to 17

when I toggle flood on the diagnostics screen, the Output 3 led flashes red. there is no activity on the current state leds, but ther is no activity shown when steppers are running either.
measuring from ground to pin 17, I get approx 0Vdc with flood enabled and flood disabled.
tried different pins to no avail

checked parallel port driver, it is up to date
it is an ECP printer port
checked my cable and it is 1 to 1 connected.
breakout board has continuity from pin 17 input to terminal.

I am at a loss!  HELP!