Machsupport Forum
Mach Discussion => FAQs => Topic started by: shocksuey on December 08, 2014, 01:21:09 PM
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When i press Ref all home button, Y axis goes down and down and dowwwn... until it hits the bottom, but Y axis still tries to go down. I can't lift up y axis, only manually.
What can i do?
Sorry for my poor english, Thanks folks !!!
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I am not sure what your issue is, but i have read several posts on ref all and many seem to be confusing. on my machine once i move the all axis to my machine zero position and hit ref all, it seems i cannot reset using the ref all button again. I have read several posts that indicate you can jog to a location and hit ref all and a new machine zero coordinate will be set. this does not work on my machine. There must be some condition that must be cleared, or changed to reset the machine zero.
Does anyone have an explanation.
Also i have never been able to find a good explanation of the to go button, i saw it explained as it indicates the distance to go. What distance to go where?? and what happens when you press it? I also saw a post saying you can set several to go locations ?? how and to where.
Also my machine does not move when you hit Ref all, and as i stated in only seems to work once just after starting a new profile it zeros the machine at a the current location but it does not move it if i jog to a new location and hit ref all nothing happens. no zeroing of dro's and no axis movement.
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Hi,
and what is happening if you are referencing axis by axis in the diagnostic screen ?
Tom
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i do not have limits switches so nothing indicated on diagnostic regarding axis. The question is if you jog your machine to some xyz location with in the work pass and hit ref all after having done so previously, and setting soft limits based on the prior machine home position set using ref all. . Should the ref all set a new maschine home, and if not why not.
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this was the process,
1 start new profile
2 jog macine to a position i want to be machine zero
3 hit ref all.
4. set soft limits
5 move machine to new location to be machine zero
6 hit ref all
7 the result ref all does not create new machine zero and will not zero machine to this coordinate. i can set new g54 location but it will be in reference to original macihine zero
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The above actually seems to make sense to me, as why would i want to set a new machine zero, i would think that once set i would not want to mess with iit, but
i have seen several posts that indicate you should be able to reset machine zero by moving the machine and then hitting ref all a second time.
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i think you are on the wron way.
referencing is normaly done to a limit switch.
axis goes to the limit switch and back off it then the axis is zero.
as far as i understand you you want to zero the axis not to reference.
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IF you do not have ref switches then MAKE SURE that you have all of them turned OFF in config. With them turned OFF Mach3 will then reference the position that you are currently at.
You would MOVE to the position you want to set as Machine zero then click on the refall button. That sets machine to the current location. NOW you normaly ONLY set the machine Zero ONCE. Setting Machine Zero is ONLY to let Mach3 know where it is in 3d space. It then tracks your work positions referenced back to Mach coords.
Just a thought, (;-) TP
To move the jobs around the table you would use ZEROALL or ZERO each axis . THAT will set the WORK zero or Point of Origin of the work.
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BR549. U got it. That is exactly what I have done and it zeros my machine from then on I use. Zero axis to set work offsets
And it makes sense to do this only once.
What' has been confusing me is several posts I have read about once the machine has been zeroed as you described and as I have done MOVING by jogging to a new location and using ref all to re- zero the macine coordinates
All this other posts I have read on other blogs make no sense. First of all my mach3 will not let me re- zero the machine coordinates ( I am not talking about work reference coordinates) and secondly it makes no sense as to why I would
Want to. I have just been wondering if my mach3 was messed up in that I can't. Re zero using ref all. Or was I screwed up in my thinking that I should only set my machine zero once. Now if I wanted to change it the only way I have figured out how to do it is start a new profile for mach3
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One other point the original. Post by sockseuy above was about the machine moving when ref all was hit. My machine does not move when. Hitting ref all so that made no seance to me
Changing subject to what does Togo do. How does it work
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IF you do not have physical switches AND you have homing set up in config THEN it will attempt to go HOME but can never hit a switch as there are none.
IF the switches are NOT set up in config then it will just refhome at the current position(reset to Machine ZERO) Machine coords are NOT what you normal use to cut by. WORK zero is what you cut by.
(;-) TP
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Thanks for all the input, i think this is put to rest, except for the togo button, i have not been able to find out what it does. one post i read said it is how far to go to next??? but never really explained what "next" was or how it is set. All the post indicated you could set several togo's ???
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TOGO changes the dro readouts to show you how far it has to go to get to the end of the current move in the current gcode line. Rarely used today.
(;-) TP