Bugs item #2136805, was opened at 2008-09-29 15:57
Message generated for change (Settings changed) made by jepler
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Category: Motion Controller
Group: None
>Status: Closed
>Resolution: Fixed
Priority: 5
Private: No
Submitted By: Chris Radek (cradek)
Assigned to: John Kasunich (jmkasunich)
Summary: Threading/tapping with spindle running backward: no motion
Initial Comment:
With the spindle running CCW (M4), G33 and G33.1 commands result in no motion.
To reproduce:
S300 M4 G0 Z0
G33 Z-1 K.1
expected result: synchronized move to Z=-1
actual result: no motion and the "move" never completes.
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>Comment By: Jeff Epler (jepler)
Date: 2010-11-01 11:03
Message:
Another part of this bug had been fixed in commit
57c8a38924185f81bf3727aa60b434d73413cb4c
Author: Chris Radek <ch...@timeguy.com>
Date: Fri Jun 18 09:46:13 2010 -0500
Fix threading and tapping with spindle turning backward (M4)
this was in emc2.4.2 and newer.
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Comment By: Michael Haberler (mahsofo)
Date: 2010-11-01 09:38
Message:
looks like its related to: [emc-Bugs-3092250 ] near.9 component broken for
negative inputs
this caused spindle-at-speed detection to fail when spindle running CCW
near.comp is now fixed and the same scenario as above now works fine for
me
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