Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: M250cnc on January 13, 2010, 12:14:52 PM
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There is no prize but you will help me out. ;D I have tried looking in the XLS file
Phil
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Works fine for me....
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When you request referencing (by button or GCode) the axis (or axes) that have Home switches
defined will travel (at a selectable low speed) in the defined direction until the Home switch operates.
The axis will then move back in the other direction so as to be off the switch. During referencing, the
limits do not apply.
When you have referenced an axis, then zero or some other value, which is set in the Home Off(set)
column of the Config>Homing/Limits dialog, can be loaded into the axis DRO as its absolute
machine coordinate. If you use zero, then the Home switch position is also the machine zero position
of the axis. If the reference goes in the negative direction of an axis (usual for X and Y), then you
Table-X+XFrame-X andReferenceramp+X, X & Ref switch-+X ramp
4-15
might get referencing to load something like -0.5” into the DRO. This means that the Home is half an
inch clear of the limit. This wastes a bit of the axis travel but if you overshoot, when jogging to Home,
you will not accidentally trip the limits. See also Software Limits as another way of solving this problem.
If you ask Mach3 to reference before you jog off the switch, then it will travel in the opposite direction
from its “reference” direction (because the machine already on the Home switch) and stop when the
machine gets off the switch. This is fine when you have a separate Home switch or are on the Limit at
the reference end of the axis. If, however, you are on the other Limit switch (and Mach3 cannot know
this, if the switches are shared), then the axis will move away from the actual Home point until it
crashes. So the advice is always jog carefully off the Limit switches, then reference. If you are concerned
about this problem, it is possible to configure Mach3 so it will not automatically jog off the
home switch.
From the manual Mach3Mill_Installation and configuration...
Bill C.
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Bill C & HimyKabibble thanks
Everything works OK i just need the DRO number for some calculation.
So when i have a number in that DRO i can then use that in a calculation.
Phil
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I was thinking that was too easy! How about 30 - OEM code?
Bill C.
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I was thinking that was too easy! How about 30 - OEM code?
Bill C.
DRO 30 is Encoder 2 position....
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I'm looking at the OEM codes - dah! So where do we have a list of these DRO codes?
Bill C.
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Is this them?
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Trying to learn something here....
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16 thru 21 ?
RC
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hmmmmm......don't think so. Must be buried in the Sys. Function.
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I kind-of figure that this may be the sort of information that would open that 'can of worms' on this forum! I've dug around and found this info before but memory fails...
Bill C.
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It's a terminology thing....
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:)
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Overloaded, What's the .gif file on your post. Says it's 'not allowed'...?
Nevermind! I must have been to eager to see....!
Thanks for the info!
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Overloaded is the winner. ;D thank you.
In the Mach3 OEM codes it describes Oem 33 as "X axis Ref Sw DRO"
Maybe the file could be updated
Phil
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That's Hood's baby...lets ask him nicely and he just might add the description.
:)
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Phil, I have been working on the list for a while. This is some of the prep. work going into Rev.4. I will post a different version in Hoods sticky in General.
Brett
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Not mine, its just from the wiki and put in a xml to make it downloadable and easier to search.
Think Brett will be posting a new list sometime with better descriptions and maybe even the new numbers for Rev4
Hood
Edit, now that is a serious state of affairs, I have been outyped by a Redneck ;D
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Well it DID look like a bit much for you to author....but I assumed you would have no trouble editing it. ::)
Russ :)
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Hood i don't blame you in anyway. ;D
It's frustrating when you search for OFFSET and those DRO's don't show up.
Still all's well that ends well
Phil
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Well it DID look like a bit much for you to author....but I assumed you would have no trouble editing it. ::)
Russ :)
No point as scro.... oops Brett is about to post an updated one for Rev4 with updated (and meaninfull ) descriptions.
Hood
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Yea..I saw. Just pickin. lol
After all, rev4 and Turn and all will be done ......well.....soon.
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Well it DID look like a bit much for you to author....but I assumed you would have no trouble editing it. ::)
Russ :)
No point as scro.... oops Brett is about to post an updated one for Rev4 with updated (and meaninfull ) descriptions.
Hood
Mos wunerful! Just proves that written English may not be perceived quite as it was meant to...All's well that ends well! (unentitled repeat!!) (jees! "unentitled"? I meant to spell 'unintended' - jees I need another drink!)
No cigar anyhow!