4th Axis Rotary Limit

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23 Nov 2017 12:20 #102255 by timmert
Hello

I have a question about the limit on a rotary axis.
I'm using a 4th axis that's setup as Angular. After some machining the axis wouldn't go forward (only reverse) without a warning. When I checked the limits of this axis it was setup at 3600.
So that means 10 full rotations. I can increase it to 9999 but that would only delay the problem.
At the moment I removed the limits for this axis in the INI file.
But will it remove any limit, or is there a default limit?
And how do I set it up to have a unlimited rotations?

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23 Nov 2017 17:32 #102265 by Todd Zuercher
Replied by Todd Zuercher on topic 4th Axis Rotary Limit
I believe that if you remove the limits the limit will be the number that a 64-bit float can handle. (Someone please correct me if I'm wrong.)

It might be advantageous for you to configure the rotary as a "wrapped rotary"
linuxcnc.org/docs/html/config/ini-config...s__lt_num_gt_section

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24 Nov 2017 18:12 #102306 by andypugh
Replied by andypugh on topic 4th Axis Rotary Limit
9999 delays the problem a little while.
99999 delays it for 10x as long.

10E300 delays it for the lifetime of the universe and beyond.

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