Quote Originally Posted by JAZZCNC View Post
No remember it's a simple a formula to find the Steps per. Divide the Micro steps by the Pitch. . . .So 800/5=160

This is an absolute calculation to within fractions of the calculated figure so when doing the Axis calibration it should be very very close if not the same has the calculated figure. If it's different by a lot then something is wrong.

Things that can cause this differance are the drives micro stepping not being set to what they say they are.?? . . Doesn't happen often but it does happen. (Or you are setting them wrong.!. . It's Common to mix up ON / OFF on Dip switches.?? )

Regards Velocity and Accelleration then you'll just have to play about has every machine is different. 5000 and 800 for X & Y shouldn't be too taxing if you have decent amount of volts on the motors. Slightly less on the Z axis.
Hi Jazz

You were absolutely right, something was wrong. As luck would have it I forgot my disk with the documentation regarding MS driver settings chart. I had to resort to removing a driver from my control box to look at the chart on there. Lo and behold, it seems I have the wrong docs for my drivers. The dip switch settings I have been putting in, eg, 1600 steps has been actually 3200, hence when I calibrated in Mach I was getting a figure of around 640 'steps per'.

I have now set the MS drivers to 1600, manually typed in the 'steps per' box 320. I played around with the velocity and acceleration settings and have ended up at 3000 and 800 respectfully on all three axes.

Everything seems to be running better now.

I don't know how long I would have gone on before making the discovery, good fortune has intervened by me forgetting the document disk, but it has been your insistence that something was wrong that has pushed me on to check and re-check settings.

Thank you again Jazz for your patience and knowledge for a greenhorn.

Jim