5941
General Mach Discussion / Re: y axis changing direction while running g code
« on: June 19, 2012, 02:09:01 AM »
Hi Doug,
The tb6560 controller works best with a 5Volt TTL signal, if your parallel port is only outputting a 3.3Volt TTL signal then this could be the cause of your problem. Check your X axis Direction pin with a voltmeter - it should switch between 0V and 5V (approx.) depending on the direction of motion.
Tweakie.
The tb6560 controller works best with a 5Volt TTL signal, if your parallel port is only outputting a 3.3Volt TTL signal then this could be the cause of your problem. Check your X axis Direction pin with a voltmeter - it should switch between 0V and 5V (approx.) depending on the direction of motion.
Tweakie.