At_pid configuration question

Tune-mode and tune-start are linked to the Xstart and Xaxis signals, but there is no sign (in that HAL file) of anything to set those signals to "true" to start the process.
There may be a GUI and buttons that do that, though.
Otherwise you probably need to open a terminal and "halcmd sets Xstart true"
(and the same for the Xaxis signal).

Be warned, all I have heard about at_pid is that it isn't very good. I have never tried it though.

I am a bit surprised to find emcmot.... pins in your HAL file. What version of LinuxCNC are you using?

viski wrote:

Well , i have problems with normal PID tuning. Motor is singing or oscilate.

You might find that manual tuning works better.
You also might need to tune the velocity loop in the drive.

viski wrote:

I am useing emc 2.5.1 , latest version.

Well , i have problems with normal PID tuning. Motor is singing or oscilate.

I have brushed DC servo motors with tacho generators feedback. - velocity mode analog servo drives and mesa m5i20 and 7i33 with analog output.

Have you seen my servo tuning tutorial?

gnipsel.com/linuxcnc/tuning/servo.html

John