LinuxCNC Support Forum :: Topic: Axis Hangup! (1/1)

eslavko NOW ONLINE Expert Boarder Posts: 120 Karma: 1	Hello... Here is code that hangup Axis. G21 G91 F80 o<YSearch> do G38.3 Y1 o<YSearch> while[#5070 eq 0] M02 Seems that axis dryrun that code and make infiniti loop as #5070 parameter is not updated (probe trigered) How to overcome that?
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Re:Axis Hangup! 27 Fév 2010 07:19 #2091

acemi OFFLINE Senior Boarder Posts: 55 Karma: 6	Why do you need while loop here?
	Last Edit: 27 Fév 2010 08:09 by acemi. The administrator has disabled public write access.

Re:Axis Hangup! 27 Fév 2010 07:44 #2092

eslavko NOW ONLINE Expert Boarder Posts: 120 Karma: 1	The idea of code is to make move until probe hit object. As position is not known I just make progres until get hit. If I want just one move then move should span trought entire table. But If the probe is in midle of table I got soft limit error.
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Re:Axis Hangup! 27 Fév 2010 08:08 #2093

acemi OFFLINE Senior Boarder Posts: 55 Karma: 6	You can use G90 and an end position before the limit point.
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Re:Axis Hangup! 27 Fév 2010 08:19 #2095

eslavko NOW ONLINE Expert Boarder Posts: 120 Karma: 1	Where to read axis limit?!? And current position?!?
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Re:Axis Hangup! 27 Fév 2010 10:19 #2097

acemi OFFLINE Senior Boarder Posts: 55 Karma: 6	www.linuxcnc.org/docs/devel/html/gcode_m...38.2:-Straight-Probe You can read the current position after the probing from #5061 ... #5069 You can get the probing result from #5070 The axis limits are in your INI file
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Re:Axis Hangup! 27 Fév 2010 12:31 #2101

eslavko
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Here are misunderstanding I think...
I Know that axis limits are in INI. I wrote that. But how to read that value inside Gcode?
I know that #5061 to #5070 are probe variable.
But how to determine current position (before probe move?)
So let's go trought example.

I jog machine inside some hole. Now I want to find center of that hole.

1. Remember current coordinate (how to do that?)
2. Go slow Y+ from current position until probe hit or soft limit reached (remember position #5061.....)
3. Go rapid to coordinate from step 1 (back to start)
4. Go slow Y- (same as step 2)
5. calculate midpoint from step 2 and 4 and go rapid here

6. do same thing for X axis (this is precise)
7. repeat again for Y axis (now Y is precise too)

show message that's done and show diameter too...

Holecenter program's I found all require to tell hole diameter and position. I'm shure that's not necessary. Just don't know how to deal it.

Slavko.

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