Please help - missing steps ... Mach3

[Clive S]

Well first of all you seem to be jumping all over the place and not concentrating on trying to sort the problem out in a logical way. It is no use just trying random changes. So take it one step at a time giving clear and concise feedback.
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Some good pictures of the machine would help, are you using ball screws or screwed rod etc? You have already been asked to check the pp voltage out put. ie is it 3.3V or 5V but you have not answered. This might just be a simple pp and bob problem.
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Sorry to be a bit harsh. ..Clive

[komatias]

Get an external motion controller. The parallel ports on Acer and Asus motherboards are not great, I have tried both of them and know. If you do not want to afford a motion controller, get a second PCI parallel port and see what you get but chances are you will still be having issues.

Regards

George

[Dragonfly]

When I moved Y ... after 200 mm ...300 mm I am receiving that motor knock ...

Does it happen at different points when you apply different speed or steps per mm?
If at the same point then check the mechanics.