Test the input lines of your PC's printer port with lpt_test.exe 7.136 byte. Limit- and end switches are usually connected to these input lines. The software shows you in real time the input states (low / high) of all three possible lpt ports a PC can have. Helps you to determine the port address of your lpt port. Move 4 axes (no interpolation, no ramps) of your stepper motor cnc machine with test.exe 5.152 byte. Source (docu is in the source) is here: test.pas 4.015 byte. In case of download problems right click and from the popup menu chose Save Target As... This tiny software is very simple and that makes it great for error tracking (mystique backlash, lost steps, lpt port errors, malicious motor electronic, driver problems and such) in a cnc environment at low level. Remember that less is often more. A minimalistic system eliminates a lot of potential errors by definition. Have a look to the commented source to see how easily motor steps are generated by software. |