Machsupport Forum

Mach Discussion => FAQs => Topic started by: Wojtek on November 21, 2010, 04:38:23 PM

Title: PC / Relay board communication problem
Post by: Wojtek on November 21, 2010, 04:38:23 PM
Hi there great community!

It was beautiful day when I completed assembly of my cnc project until tried to test it...
Following carefully configuration instruction I was trying to play with relays on breakboard.
And nothing has happen (0x378 LPT adress and correct pins setup) 
I noticed "Port 1 Pins current State" indicator  does not change as I turn on/off spindle and flood (ESTOP was fooled).
I was trying to checki if address is correct in bios but found only LPT IRQ set to 11.
What should I do/check?

I work on Dell SX260, Windows XP Professional Edition , Mach3 + uServo Kit http://cncdrive.com/ (http://cncdrive.com/)

Title: Re: PC / Relay board communication problem
Post by: Tweakie.CNC on November 24, 2010, 08:16:27 AM
Hi Wojtek,

Welcome to the forum.

Do you get any communication at all between the PC and your CNC controller ?

Tweakie.
Title: Re: PC / Relay board communication problem
Post by: Wojtek on November 30, 2010, 03:01:01 PM
Hi Tweakie

No communication at all.
Maybe optocouplers are burnt, but why LPT pins doesn't change state in Mach3's Diagnostic?

Title: Re: PC / Relay board communication problem
Post by: Tweakie.CNC on December 01, 2010, 02:19:53 AM
Hi Wojtek,

You are not alone, I can never get the Mach diagnostic LED's to work, they used to once.

I use Parmon for parallel port monitoring and you can download it from here http://www.geekhideout.com/parmon.shtml It is simple to use and will show if your LPT port is working or not.

Tweakie.