Understanding what a COMP_FILE in the INI does

Thank you Aciera! I wiil try what you sugested and report later. How would you start, with 1, 10 100? I don't know how big the effect ist.

Regards, Peter

Hi Mecanix, thank you for the explanations and the video. Now it's clear for me, that the compensation file is not the right way. In your video, you moved the glas scale and the servo motor(?) followed the movement. When I tryed the same, I get a "joint x following error". How did you configure you hal- and ini-file?

In the attachment I send you my files and would be glad if you have the time to look over. I'm not absolutly sure if they are right configured. The zaxis is not yet finished. Only the y- and zaxis work.

Have a good time!

Regards, Peter   

Hi Peter, unfortunately I am of no remote help for PID tuning and validation. This process is normally carried on-site by an expert who does the math, analysis and validation upfront, then implementation.

Not in mood to mislead anyone by telling them to randomly 'add a lil of this' and 'remove a lil of that'. Based-on-luck setups aren't exactly recommended if system integrity and accuracy is your goal. Do advise to get someone who can MATLAB/LabVIEW your baseline system characteristics first and take it from there.

ps: video is a shill for Delta and their line of closed loop drives. Not mine.

Hi Mecanics, thank you anyway. I understand your reasons.

Regards, Peter

LOL, These forums..

FYI. there are 2 types of scales. Absolute will give your exact position and TTL scales will provide you a step count.

Mesa is the only linuxcnc board I know of that can handle absolute scales. Absolute will solve all crapy screw issues.

TTL is no different than an open loop counting steps. The only advantage of this type of scale is you remove backlash because the count doesnt start until the scale moves.