Vebers,
I'm no expert but I did get errors alot until I got my servos under control in spi. I ocassionally will still get errors in spi, but I ran my mill all week on the same job in mach3 and repeating position was not a problem. I too got good graphs only some of the time, especially with the visual basic program. The later at night it was, I found myself forgetting to jump the pins when switching from mach to spi..
I wasn't prepared for the violent ossilating that can happen when tuning. Does your setup still take off with all the Kx settings at zero except a little KP?
I think I ended up with kp 1100, ki 75, kd 2250, ki index 2 for x and y, but z for some reason preformed better with all the k values higher. I know every situation will be drastically different. |