Messages

1

General Mach Discussion / Re: New Computer, now stepping problem

« on: September 29, 2011, 03:59:57 PM »

Well here is the solution. I find it odd...

With the new computer the velocity and acceleration was too fast. It must have been the old computer could never meet those limits because of CPU speed so the machine ran fine. With the new faster computer I had to cut the accel in 1/2 and reduce the velocity from 100 to 75 ipm.

2

General Mach Discussion / New Computer, now stepping problem

« on: September 28, 2011, 06:58:35 PM »

Hi

I have been running Mach3 on a K2CNC with stepper motors for a couple of years, no problem. The CNC computer failed so I bought another. Now when I "Go To Zero" which I believe is a full speed move, the motors just sit and squeal. Yet I can reference home and jog OK at lower speeds. With drivertest the old CPU was testing at about a 1800, the new CPU is testing at 3400. Still running 35Khz as I did with the old machine. Configuration was copied over exactly. Parallel port is outputting 5 volts. I also tried a PCI parallel port card and the same thing happens.

If I could I would underclock my CPU but the BIOS only allows overclocking.

Been poking around with some setting with no results. Any pointers?

Thanks