Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: otas on June 12, 2012, 02:33:26 PM

Title: Spindle control lost after PC computer changeover.
Post by: otas on June 12, 2012, 02:33:26 PM

I wanted to streamline my installation and replaced an old big tower with a small desktop PC. Sorry for long winded interlude. I transferred the XML file to the new PC, everything seems to work, except the spindle will not turn. I have checked outputs on the DB25 with DVM, and they are same on both computers. I have the old one next to it and when I change it back, it runs fine. Any clever clogs there?

Title: Re: Spindle control lost after PC computer changeover.
Post by: Hood on June 12, 2012, 05:12:07 PM

If the outputs are the same when you measure with the meter then it has to be a hardware issue. Could it possibly be that the voltages are just a bit lower on the new compters port than the old one and that your spindle controller needs more?
Hood

Title: Re: Spindle control lost after PC computer changeover.
Post by: angel tech on June 12, 2012, 06:01:26 PM

check the bios on the new computer to see if the parallel port setting is on ECP, if it is change it to EPP. This is known to stop the spindle signal.

Title: Re: Spindle control lost after PC computer changeover.
Post by: otas on June 12, 2012, 06:59:31 PM

Quote from: angel tech on June 12, 2012, 06:01:26 PM

check the bios on the new computer to see if the parallel port setting is on ECP, if it is change it to EPP. This is known to stop the spindle signal.

You are fantastic! You did it... Changed from ECP to EPP and I am in business. Great, thank you very much! And YES, you are ANGEL!