#linuxcnc-devel | Logs for 2016-11-06

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[06:45:07] <terkaa> hi all
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[06:54:12] <terkaa> I have noticed that using QUILL_UP parameter with ABSOLUTE_ENCODER = 2 Does not work. Is this a bug?
[06:56:00] <terkaa> TOOLCHANGE_QUILL_UP = 1
[06:56:27] <terkaa> I am running master.
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[12:05:55] <KGB-linuxcnc> 03John Thornton 052.7 d0b5fd9 06linuxcnc 10docs/src/Master_Documentation.txt 10docs/src/common/emc-history.txt Docs: fix pdf duplicate history listing * 14http://git.linuxcnc.org/?p=linuxcnc.git;a=commitdiff;h=d0b5fd9
[12:11:14] <jthornton> now that is fixed on to the update/upgrade/bugfix confusion
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[13:48:31] <jepler> terkaa: I would be surprised if those two configuration items interacted.
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[14:22:36] <dgarr> terkaa: did you use correct spelling is [EMCIO]TOOL_CHANGE_QUILL_UP= (note underscores)
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[18:36:07] <andypugh> I have a vage recollection that this is the second mention of TOOL_CHANGE_QUILL_UP not working for someone. Does anyone have a system to quickly test it on?>
[18:40:49] <andypugh> I just checked in an old 2.8 sim, and the tool moves to Z=0 in machine coordinates.
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[20:19:17] <terkaa> Evening all
[20:33:49] <andypugh> Hi
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[20:34:55] <andypugh> Can you use TOOL_CHANGE_POSITION instead of TOOL_CHANGE_QUILL_UP ?
[20:40:04] <terkaa> Yes
[20:40:08] <terkaa> That works
[20:40:37] <andypugh> What does QUILL_UP actually do?
[20:40:54] <andypugh> It _should_ go to 0 on the machine units-scale of Z
[20:42:53] <terkaa> I thought it would go to position defined by HOME = parameter in INI
[20:43:44] <terkaa> I am now using G53 Z-80 before M06 Tx command
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[20:54:53] <andypugh> terkaa: Looking at the code, it definitely makes a move to machine Z=0
[20:55:15] <terkaa> Ok. That explains it.
[20:55:29] <terkaa> So that parameter cannot be used with Absolute encoders
[20:55:34] <andypugh> What were you seeing?
[20:56:19] <andypugh> Not so. Machine units still exist. However it is possible that Z-0 is outside your valud range?
[20:56:36] <terkaa> I have min limit -500 and max limit -80.
[20:56:42] <andypugh> If you set the machine to show machine units. what do you see?
[20:57:18] <andypugh> Does G53 G0 Z0 have any effect? That’s the equivalent thing.
[20:57:33] <andypugh> https://github.com/LinuxCNC/linuxcnc/blob/14b06552d02ed497d81545d8b8039f3423899745/src/emc/rs274ngc/interp_convert.cc#L5101
[20:57:37] <terkaa> ^^
[20:58:15] <terkaa> Limits are -80 to -500
[20:58:34] <terkaa> And that is why Z0 in machine units is impossible
[21:00:38] <andypugh> Ah, I was mis-reading
[21:00:59] <andypugh> Yes, to the system probably throws-away the move as invalid.
[21:01:36] <terkaa> Basically it works like intended.
[21:02:24] <terkaa> But with absolute encoders it would be nice to set position for QUILL_UP
[21:03:22] <andypugh> Or just remove QUILL_UP as an option altogether and make integrators specify an actual position.
[21:04:11] <terkaa> Okumas have a way to define order for axes to move to TC position
[21:04:27] <terkaa> IE. TC_MOVE_ORDER = 3 2 1
[21:04:42] <terkaa> moves Z first then Y and X last
[21:04:50] <Tom_L> lcnc does too for homing
[21:05:36] <terkaa> That would be good solution IMHO
[21:05:48] <andypugh> Hmm, I see your point. You want to retract without an XY move, normally, don’t you?
[21:06:26] <andypugh> It is possible to reconfigure your axis limits to include zero, or is that basically fixed by the scales?
[21:06:31] <Tom_L> yeah, normally i specify the z move ahead of the x y ones
[21:06:51] <terkaa> That is fixed
[21:07:12] <terkaa> TC_MOVE_ORDER = 3 0 0, would move only Z
[21:08:14] <terkaa> nope TC_MOVE_ORDER = 0 0 1 would move Z only
[21:12:01] <terkaa> Hmmm... I will try to implement this
[21:23:18] <terkaa> task/emccanon.cc takes care of moving to tool change pos?
[21:29:06] <terkaa> Gn for now
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[21:50:07] <andypugh> jepler: Does tkinter (or whatever Axis uses) support sending messages to embedded tabs/controls?
[21:51:46] <andypugh> I am thinking of adding this code (the working version was actually put together by Chris Morley) to Touchy and other Python/gtk UIs. http://www.pastebin.ca/3736977
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