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Messages - john351

Pages: 1 2 »
1
General Mach Discussion / Re: testing outputs on breakout card
« on: August 19, 2011, 07:37:23 AM »
But shouldn't the step pins have changed even if randomly?

2
General Mach Discussion / Re: testing outputs on breakout card
« on: August 19, 2011, 07:06:52 AM »
if I press the x+ and x- they toggle the pin 2 o/p
Y+ and y- toggle pin 4
z+ and z- toggle pin 6

john f

3
General Mach Discussion / Re: testing outputs on breakout card
« on: August 19, 2011, 06:35:27 AM »
Yes, but, when I disable the output on the outputs window and
go back to the motor outputs and set them up and press apply
then I check my leds they are all, say, off. Then I go back and toggle the active levels
press apply, look at my leds - they are still the same.

4
General Mach Discussion / Re: testing outputs on breakout card
« on: August 19, 2011, 06:14:46 AM »
First - this printer port works perfectly ok with a printer.
If I load mach3. I disable all the motor outputs.
I go to config - ports and pins - outputs.
I set up either all of the enables or all of the outputs
using the pins I used for the motors 2,3,4,5,6,7
then if I "apply" then I can toggle these outputs and
the led's on the outputs of my breakout card toggle!

John F

5
General Mach Discussion / Re: testing outputs on breakout card
« on: August 19, 2011, 04:38:39 AM »
Thanks
I did. I only used a digital voltmeter with a high input impedance to test the outputs.
Since it was a female connector it was not possible to touch any other pins accidentally.
But all it did was to prove I do have a problem.
Any ideas?

john f

6
General Mach Discussion / Re: testing outputs on breakout card
« on: August 19, 2011, 03:59:27 AM »
I have tested the pins on the d-type connector on the back of the computer.
today pin 6 is high all the rest are low. I have tested the cable from the computer end
by pulling each pin low. This activates the led's as it should.
The port address is the default 0378 as set by mach 3.
The inputs work and probably wouldn't if the address was wrong
on the diagnostics page fre is 25005 and time in int varies from 4.5 to 5.0 roughly.

john f

7
General Mach Discussion / Re: testing outputs on breakout card
« on: August 18, 2011, 06:26:20 PM »
I hope this is it

8
General Mach Discussion / Re: testing outputs on breakout card
« on: August 18, 2011, 12:33:18 PM »
I have had to go on holiday since my last post. When I got back I just could not get any of the outputs to work.
Pins 2 3 and 6 are always on. If I unplug the card all the outputs go on. If I earth any of the input pins each output turns off as expected.
If I twiddle via mach3 any of the outputs nothing happens and nothing shows up for the output on the diagnostic window.
I'm getting desperate.

John

9
General Mach Discussion / Re: testing outputs on breakout card
« on: July 22, 2011, 07:28:00 AM »
I thought of something along these lines but was surprised how easy it was to test the inputs but not the outputs.
I used output 1 on ports and pins/output signals
I found that to change the pin no you have to use apply but once you have done this you can toggle the output
with the active low control.

Thanks

Incidentally they did work - thanks

10
General Mach Discussion / testing outputs on breakout card
« on: July 22, 2011, 06:48:46 AM »
Under section 5.3.8 of the mach3 manual it covers testing.
It tells you to go to the diagnostic screen
it is then possible to test each input by shorting to ground each input pin
on the breakout card and an "led" on the screen lights up.
That great for the inputs.
Is it possible to test each of the outputs one by one by tweaking something on the screen.
I have an led and resistor on each of the outputs on the breakout card.

john f

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