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Author Topic: Z Axis loosing steps in the up direction only.  (Read 6858 times)

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Offline Hood

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Re: Z Axis loosing steps in the up direction only.
« Reply #10 on: January 27, 2014, 05:30:07 AM »
Open Mach and look at the name of the profile you are using, you can then look in the main Mach3 folder for a file of that name with a xml extension, not the xml backup folder just in case that was where you looked.
Hood
Re: Z Axis loosing steps in the up direction only.
« Reply #11 on: January 27, 2014, 05:55:50 AM »
I did look in the back up folder and assumed that was the one. ::)
Do I have the correct one this time?
« Last Edit: January 27, 2014, 05:59:21 AM by ozymax »

Offline Hood

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Re: Z Axis loosing steps in the up direction only.
« Reply #12 on: January 27, 2014, 06:11:40 AM »
Ok that looks better :)
Dont see anything glaring wrong with it so thinking it is not the xml at fault.
Hood
Re: Z Axis loosing steps in the up direction only.
« Reply #13 on: January 27, 2014, 06:27:05 AM »
Ok that looks better :)
Dont see anything glaring wrong with it so thinking it is not the xml at fault.
Hood

Ok thanks for looking and I learnt where to find the xml in the process.

Offline stirling

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Re: Z Axis loosing steps in the up direction only.
« Reply #14 on: January 27, 2014, 08:18:19 AM »
Everything you've said suggests a dodgy Z DIR signal either on your BOB, your PP cable or the PP itself.

Try using a different pin for your Z DIR. In ports n pins I'd suggest you disable your A axis for a moment and set the Z DIR pin to 9. Then of course connect what's labeled on your BOB as the A DIR pin to your Z drivers DIR.

Re: Z Axis loosing steps in the up direction only.
« Reply #15 on: February 13, 2014, 04:19:12 AM »
Ok, I've just inserted my new PCI card to the computer.
Assigned a new address for the card in Mach3.
Changed over all the port numbers in ports&pins to the new card.
Tested all the limit switches and tool zeroing plate and checked their operation in the diagnostic screen and they all worked ok.
Powered up each axis one at a time and tested all the motors. All motors worked fine, so I homed the machine. All ok.

So it looks like I had a fault with my mother boards parallel port, but I still have a problem and that is, I can't get the E stop to work.
I have changed the E stop over to the new card but can't get it to work. I've toggled the active setting and still no go.
Everything else simply changed over without issue, so why not the E stop??

I'm now using #2 port with an address of A400 and I have un-checked the port #1 box.

Can anyone shine some light on my problem ???
Thanks.

Offline Hood

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Re: Z Axis loosing steps in the up direction only.
« Reply #16 on: February 13, 2014, 07:27:30 AM »
Without seeing your xml it would be hard to even guess the problem.
One question however, why are you using port 2? why  not just set up as port 1?
Hood
Re: Z Axis loosing steps in the up direction only.
« Reply #17 on: February 28, 2014, 07:08:30 PM »
Ok heres a follow up of my issue so as to possibly help someone else chasing the same problem.
After doing some more playing around like re-installing drivers etc, I decided to make a late night (my time) call to Probotix and explained my issue. They were very helpful and ran through a couple of things for me to try.
When I first got my router up and running my e-stop switch wasn't working correctly and I had to fit a resistor across the terminals of the BOB to get the system to work.
After talking to the Probotix tech, it was suggested, amoung other things, to remove the resistor and see what happens.

Well my e-stop is working as it should now, so I'm a happy routerer again.
For some reason the PCI card wants to see a different voltage at terminal #15. Any way, I'm up and running again.
Thanks to all the people that have tried helping me with the problem.
Cheers.