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Using parallel port
« on: June 01, 2006, 02:59:28 PM »
I wonder if anyone can help me sort this one out:

I tried 'dry running' Mach3, licensed version, on two computers:

Computer 1 (Athlon 2.01 GHz, 1Gb RAM). Running XP Home SP2 with updates.

Computer 2 (Dell 1100, Celeron 2.79 GHz, 1Gb RAM). Running XP Home SP2 as installed by Dell 25 May 2006.

The interface board requires step pulses on pins 2, 5 and 8 for X,Y and Z axes respectively.

On both computers the Mach3 software runs OK but when (with jog keys used to send pulses, or with a G-code file running) a 'scope is applied to the appropriate pins on the parallel port of either computer there is output only from the X axis (pin 2). No output on pin 5 or pin 8.

Suspecting that XP might be interfering with the parallel port I installed a PCI parallel port card on computer 2 and configured Mach 3 to direct the output to this port (port 2), but the problem persists.

Has anyone else had a similar problem, or is anyone aware of XP interfering with the use of the parallel ports?

In anticipation......

Many thanks


David
Re: Using parallel port
« Reply #1 on: June 01, 2006, 04:07:11 PM »
Check to see that you done have any other pins set set to the same number and be sure that you have it set to Port 1 :)

Fixing problems one post at a time ;)

www.newfangledsolutions.com
www.machsupport.com
Re: Using parallel port
« Reply #2 on: June 03, 2006, 04:35:23 PM »
Thankyou Brian.

It was the cable which I mistakenly thought was a 'straight-through' type when in fact it was a 'crossover' for linking two computers..... :-[

David
Re: Using parallel port
« Reply #3 on: June 03, 2006, 07:11:34 PM »
I have had that happen to me in the past too  ::) I took the loppers to the cable after that  ;D
Fixing problems one post at a time ;)

www.newfangledsolutions.com
www.machsupport.com