An answer after a support of Mr. Lewetz ( WIN PCNC developer)
Hello Mr. Lewetz,
I’m sorry to have troubled you with our problems. Our High-Z engraving and milling machine works very good with your WinPCNC software now!!!
Today we bought and put in a new PCI card for the printer parallel port for our Athlon PC with 2.2 GHz stroke. Instantly everything worked correctly.
Even the X- axle error is removed. All the motors buzz quietly if wanted.
The problem was the onboard parallel port of our OC which let only false data through. It is not useful for this kind of controlling. The extern PCI card gives only perfect signals and passes hem on to the stepping motors.
Thank you for your effort.
And thank you already now for your answer.