Hello Guest it is October 19, 2019, 09:41:28 PM

Author Topic: Does this screenshot mean that pins 12 & 13 are fried on my PC??  (Read 20542 times)

0 Members and 1 Guest are viewing this topic.

Offline Hood

*
  •  25,856 25,856
  • Carnoustie, Scotland
    • View Profile
Re: Does this screenshot mean that pins 12 & 13 are fried on my PC??
« Reply #70 on: August 07, 2009, 08:23:19 AM »
Step pins will show either 5v or 0v depending on the active High setting, so thats fine. You should see some difference in the voltage when you jog but it will depend how fast you are jogging and frequency  as to how much of a voltage change you will see.
 Dir pins should change from 5v to 0v as you jog one way then the next.
Hood
Re: Does this screenshot mean that pins 12 & 13 are fried on my PC??
« Reply #71 on: August 07, 2009, 09:55:10 AM »
The step pins would jump to 5v from 0v (active low) when I initially pressed the jog.  But then they would never drop back to 0v after releasing the jog button.  Is that because nothing is hooked up to the dir pin for that motor?  I never set the dir pins to active low, but did get a reading when the jog button is pushed.  However the reading was from 0v to a negative value.  

If I set one pin on a motor (step) to active low, does the other (dir) need to be set active low as well in order for it to work properly?

Edit: In the red highlighted area, I should say that it does not return to 0v when I stop jogging.
« Last Edit: August 07, 2009, 11:09:29 PM by rooney »

Offline Hood

*
  •  25,856 25,856
  • Carnoustie, Scotland
    • View Profile
Re: Does this screenshot mean that pins 12 & 13 are fried on my PC??
« Reply #72 on: August 07, 2009, 12:12:10 PM »
They should go back to zero, just check there is not a really slow accell set for these axis as that would mean it would takle a long time for it to gio back to zero. It will never however get as high as 5V on the step pins as far as a meter is concerned as the meter will only read the average. The faster the pulse the higher you will see.

Hood
Re: Does this screenshot mean that pins 12 & 13 are fried on my PC??
« Reply #73 on: August 07, 2009, 12:19:45 PM »
So, if I have step set to low in order to get a reading, should dir be set to low as well?  Like I said, set active high it is giving a negative value.

Offline Hood

*
  •  25,856 25,856
  • Carnoustie, Scotland
    • View Profile
Re: Does this screenshot mean that pins 12 & 13 are fried on my PC??
« Reply #74 on: August 07, 2009, 01:40:26 PM »
No you can have Dir set to what you want although some drives are particular about which way it is.
 I cant think why you would see a negative voltage unless you had the leads of your meter connected the wrong way round then you would see zero to minus voltage when jogging rather than zero to positive.
Hood
Re: Does this screenshot mean that pins 12 & 13 are fried on my PC??
« Reply #75 on: August 07, 2009, 01:50:46 PM »
Thanks Hood,

I will try this stuff out tonight.

Rooney
Re: Does this screenshot mean that pins 12 & 13 are fried on my PC??
« Reply #76 on: August 07, 2009, 11:06:21 PM »
I tired changing the accelleration and ther was no result.  The voltage still stays at 5v.  I get 5v on both step and dir.  On step though, I do have to set to check in motor outputs in order to get any results.   Then, to get it to not read 5v, I have to uncheck it, apply, reset, and jog again in order to go back to 0v.  ???   Just letting off the button will not return me to 0v.  Dir give 5v until I reverse the jog to the other direction.
« Last Edit: August 07, 2009, 11:08:13 PM by rooney »

Offline Chip

*
  • *
  •  2,056 2,056
  • Gainesville Florida USA
    • View Profile
Re: Does this screenshot mean that pins 12 & 13 are fried on my PC??
« Reply #77 on: August 07, 2009, 11:40:42 PM »
Hi, Rooney

Sent you a PM message, Download this printer port tester software, see pic and we can do some testing with it.

In ports & pins set mach to Sherline 1/2 step mode, Apply, OK, Then setup the pp monitor per pic 3 & 4.

You should be able to see the pin led's flash and change State if it's working by holding the direction keys down in cont jog mode.

Chip
« Last Edit: August 08, 2009, 12:00:20 AM by Chip »
Re: Does this screenshot mean that pins 12 & 13 are fried on my PC??
« Reply #78 on: August 08, 2009, 11:26:36 AM »
Thanks Chip,
I have one weding and two receptions today, so I downloaded the software and will try tonight.

Thanks

Offline Chip

*
  • *
  •  2,056 2,056
  • Gainesville Florida USA
    • View Profile
Re: Does this screenshot mean that pins 12 & 13 are fried on my PC??
« Reply #79 on: August 09, 2009, 02:20:34 PM »
Hi, Rooney

Did you get the PM message I sent you, It's at the top of this screen click on your messages.

Chip