Homing with gantry and absolute encoders

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5 years 7 months ago #202829 by CNCCustoms
Hi Andy

How does Absolute encoder homing work? Is there a way to show the joint position as a comparison to the absolute encoder all the time (i.e. if I move the motors manually while the machine is off, the position is updated when linuxcnc starts up again?)

My home switches are not fantastically accurate so I would like to make use of the always powered absolute encoders I have on my motors.

I'm running in Step gen and not using closed loop/ velocity mode.

Any help will be greatly appreciated.

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5 years 7 months ago #202914 by andypugh
If you have absolute encoders then you can home once and then never home again with the right INI config.

Just look for the HOME_ABSOLUTE_ENCODER options here:
linuxcnc.org/docs/2.8/html/config/ini-co...t__lt_num_gt_section

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5 years 2 weeks ago #223308 by Marcking
Hi, do you have an ini file as an example of a right INI config for absolute encoders? thanks a lot.

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5 years 2 weeks ago #223510 by andypugh
Here is one, but the difference is literally adding a new line in each joint section.

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