Hi all,
Through an untimely event of ignorance I managed to clear the parameter memory on my Fanuc 10 CNC controller (see other posts).
So we are on the road to re-establishing the parameters but have hit a snag on calibrating the positioning of the 3 axis so that for example 1.000" desired movement is physically achieved.
Can anyone help me to understand the Fanuc method to scaling the positioning? I have an EE degree and many years of experience in digital logic design and machine automation, so I would like a very technical explanation.
Here is what I know (or think I know) the servo motors (DC brush) have a 2000M in their part number which I have been told is the encoder PPR. The x-axis ball screw appears to have a 5mm pitch (I can manually turn and measure this to be certain).
So how does the DMR, CMR and counter maximum value all relate? I understand that we are trying to achieve at least two things: 1- calibration, while 2- maximize resolution and thus ultimately accuracy.
Thanks for any response, this is my last ditch effort to deal with the Fanuc, otherwise it will be ripped out and replaced with a PC (really I am not bitter).
Mike