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Author Topic: testing outputs on breakout card  (Read 5914 times)

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Re: testing outputs on breakout card
« Reply #10 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

Offline Tweakie.CNC

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Re: testing outputs on breakout card
« Reply #11 on: August 19, 2011, 04:55:20 AM »
Hi John,

As I understand it you have proved that the inputs work OK.

If you are running XP then download and run Parmon, this enables the output pins to be toggled (without any hardware connected). If the port does not respond correctly with Parmon then I would conclude that it is damaged.

http://www.geekhideout.com/parmon.shtml

Tweakie.
Success consists of going from failure to failure without loss of enthusiasm.  Winston Churchill.

Offline Hood

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Re: testing outputs on breakout card
« Reply #12 on: August 19, 2011, 05:01:17 AM »
Ok the frequency'time in Int means that you have the driver installed so thats not the issue, if the inputs work then it would seem port is knackered. Only other thing to check is in the BIOs that the port is set up correctly.
Hood
Re: testing outputs on breakout card
« Reply #13 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
« Last Edit: August 19, 2011, 07:24:23 AM by Overloaded »

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Re: testing outputs on breakout card
« Reply #14 on: August 19, 2011, 06:28:54 AM »
Ok so they are working?
Hood
Re: testing outputs on breakout card
« Reply #15 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.

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Re: testing outputs on breakout card
« Reply #16 on: August 19, 2011, 06:43:41 AM »
Ok well jog the axis via keyoard and see if the pin you have set for the direction changes when jog back and forth.
Likely you will not see the LEDs change until you jog.
Hood
Re: testing outputs on breakout card
« Reply #17 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

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Re: testing outputs on breakout card
« Reply #18 on: August 19, 2011, 07:09:08 AM »
so  I am guessing you have 2, 4 and 6 set as your direction pins so it would seem its working fine :)
Hood
Re: testing outputs on breakout card
« Reply #19 on: August 19, 2011, 07:37:23 AM »
But shouldn't the step pins have changed even if randomly?