Vcc

[frankg521]

Hi im confused just starting out Could some one tell me what is VCC

[Greolt]

Look at this link for explanation. Google is your friend

http://encyclobeamia.solarbotics.net/articles/vxx.html

[Greolt]

Here is another one.

http://en.wikipedia.org/wiki/Vcc

[frankg521]

ok so thats all the tech talk but my friend max says just make sure you bring the VCC from the prodrives back to a ground on the CNC4PC board. i dont understand what terminals i have to bring to ground

[ViperTX]

I believe what he means is that your power supply has a + plus and a - negative terminal......so, you must insure that the negative terminal on your supply also goes to the negative terminal on the CNC4PC card.....otherwise you won't have a ground reference....does that make sense to you?

[frankg521]

wow ...so the ground from my 24 volt and the 5 volt connect togather and to the ground of the cnc4pc witch connectes the the groun of the parrell on the computer

[NC Cams]

Yep, that's it.

All the external 24, 5 and/or 12v external P/S's have to be tied to the ground terminal of the parallel port.

This way, they are all generating the designated voltage potential from the same ground reference point.