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Messages - joelaw

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1
General Mach Discussion / Re: Mach 3 PWM signal inverted?
« on: February 26, 2016, 05:23:06 PM »
Just to let you know I found the problem :) :) :) :) :) :) :) :) :)

In the motor outputs tab there is a setting for "Step Low Active" and it was checked.  Changing it to 'X' fixed all my problems.  I guess nobody thought the motor settings had any effect on the PWM BUT IT DOES!

This nightmare is over after almost a week.

Joe Lawrence

2
General Mach Discussion / Re: Mach 3 PWM signal inverted?
« on: February 26, 2016, 04:31:58 PM »
Overloaded:

I finally got it to work.......

I found an old xml file of my setup from months ago and copied it to the Mach3 folder.  When it runs everything works as it should.  I go back to the xml I was using and it is wrong.

I tried comparing the files but the file compare program (i downloaded 6 different ones) could not parse the file into single lines.  All code was in one long line and I could not tell where the differences were.  Will keep working on that later.

I then made screen shots of all of my setups of each file running in Mach3 and saw some differences so I went back to the (not working) file and changed each setting one at a time trying the spindle each time but nothing changed.  None of the differences changed the PWM direction.   All settings in both files are the same using Mach3 setup tabs screen shots and I find no difference but one works and one doesn't.  Go figure.....

I am just going to run the old file and delete the one I was using and forget about it.  The only one who might possibly know is Art and I know he is too busy for this.

Need to find a file compare program that will allow a carriage return at end of each line so it is readable and compare every single line of the settings.

I want to thank everybody that has tried to help me on this for your interest and time.  Maybe someday I will find out what is going on and will post the fix in case it happens to someone else.

Thanks again.

Joe

3
General Mach Discussion / Re: Mach 3 PWM signal inverted?
« on: February 26, 2016, 11:11:52 AM »
I moved pin 14 to Pin 17, reconfigured with the same result M3 S25000 runs 5000 rpm. I changed the "Active Low" check box to checked and it is the same??

Joe


4
General Mach Discussion / Re: Mach 3 PWM signal inverted?
« on: February 26, 2016, 09:55:33 AM »
I will try that before re-installing Mach3.  Pin 14 to Pin 17 should not make a difference but it is worth a try.  I really don't want to re-install Mach3 and do all of the setups again.

Joe

5
General Mach Discussion / Re: Mach 3 PWM signal inverted?
« on: February 26, 2016, 08:09:08 AM »
My Smoothstepper  config is set correctly.  The output is set correctly and changing the check box to 'X' does not change anything.  That is the problem why?

Joe

6
General Mach Discussion / Re: Mach 3 PWM signal inverted?
« on: February 25, 2016, 09:15:24 PM »
I am using a Blacktoe router, Mach3 software, a Smoothstepper ethernet converter, A14A breakout board, Super PID controlling a Porter Cable router speed.  Everything works except the PWM pulse to the PID is inverted meaning that I get a high PWM going low for slow speed and that is backward from what the PID needs.  My whole problem is that I cannot find a way in Mach3 to change the PWM pulse to be low going high to get slow speed.  It wants to get S25000 to achieve a speed of 5000 rpm which is wrong and a S5000 to get a 25000 rpm.

This used to work fine but some setting is wrong and no one can tell me which setting.  The Output tab in Mach3 is set to Output #2 Pin 14 with active checked or Xed and nothing changes.  I could build a inverter circuit but that is not the correct way to get the right PWM out of Mach3.

Why doesn't changing the active high to low or back change the PWM pulse to low going high?  When this is changed it shows up in the Mach3.html file correctly but no change in PWM.

Joe

7
General Mach Discussion / Re: Mach 3 PWM signal inverted?
« on: February 25, 2016, 03:14:07 PM »
I don't have a spindle on this machine.  I have a Blacktoe 2' X 4' CNC router to build most things.  I use the Shapeoko3 for laser only.

Joe

8
General Mach Discussion / Re: Mach 3 PWM signal inverted?
« on: February 25, 2016, 12:57:04 PM »
I use an ethernet SmoothStepper.

Joe

9
General Mach Discussion / Re: Mach 3 PWM signal inverted?
« on: February 25, 2016, 12:27:25 PM »
Overloaded,  I don't know what SS or PP is refering to?

Stirling, are you saying that the 30000 setting is to high.  I know that I don't really get 100% low or high PWM but I am seeing a 5v going low when I need a 0v going high.  The check box for Pin 14 does not change things.

Joe

10
General Mach Discussion / Re: Mach 3 PWM signal inverted?
« on: February 25, 2016, 11:11:11 AM »
I am sorry, you asked for the Mach3.xml so the Joelaw1.xml file is the Mach3.xml.  The Joelaw2.xml is the setup that I am using.  I looked at the xml file and the Pin 14 output is set to 0 so I changed it in Mach3, closed and looked again and now it is a 1.  This still doesn't change the PWM from High going low to Low going high.

When I send a S30000 I get a low small pulse and when I send a S5000 I get a high small pulse going low.  This is reversed from what it should be and changing the 0 to 1 doesn't change the PWM at all.  I think it should change the pulse from high or +5v to low or 0v but no change?

Joe

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