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« on: July 25, 2008, 01:59:23 PM »
Could be many things, first thing to check is you have the correct address for the parallel port. Then check you have the axis enabled, the correct pins chosen for that axis and also the correct port asigned for it.
To check that the computer is putting out the direction signal you can measure with a voltmeter between your chosen direction pin and ground, when you jog one way then the other the voltmeter should change between 0 and 5v. You can also check on the step piin with a voltmeter but you will need it set to millivolt range, you will see a voltage when you jog, the figure is unimportant, just you need to see a voltage when jogging and nothing when stopped.
If these tests check out then your problem is probably from your computer out the way, let us know how you get on.
Hood