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24-09-2014 #2
Well first obvious thing is to make sure the home switch isn't tripped.
Next go to diagnostics and see which axis M1, 2 or 3 Home led is lit up. Then go to Ports N pins and select inputs, find the axis which is lit and change the active low state of the pin. So if green tick change to X and vise versa.
This should fix your problem.
The Fixture save refers to saving the WORK OFFSET for the FIXTURE OFFSET your using at the time. In most cases you'll be using G54 which is the default Offset.
If you save this fixture offset It saves the WORK COORDINATE relative to MACHINE COORDINATE for the FIXTURE OFFSET your using IE G54.
This means that when you next start Mach3 then after Referencing the machine to HOME position you can get back to the Last used WORK ZERO Position used in that FIXTURE OFFSET.
So lets say your Working in G54 OFFSET and you set the WORK ZERO 50mm in from bottom left corner of machine table. Then when you restart Mach and home then type G0 x0 Y0 it will go to this point 50mm from edge. Now lets say you want to cut another completely differant part at same time on same table out of differant piece of material. How do you know the distance from Machine Zero to the start Zero coordinate for the second part.? . . . .You don't and don't need to.?
In this case you apply a Differant WORK OFFSET IE G55 and designate completely separate WORK ZERO coordinate for that OFFSET. Both OFFSETS are Referenced from MACHINE ZERO so each part can have it's own WORK ZERO in differant parts of the table.
This means you can combine separate G-code program files into one file and just separate the 2 G-codes with it's own OFFSET number. So after first part ends just put G55 before next part starts and now your WORK Zero is at that point on table you selected for that OFFSET.
OFFSETS are saved in a FIXTURE OFFSET table so can recalled at any time by using it's OFFSET number.
Hope this long winded reply explains ok.Last edited by JAZZCNC; 24-09-2014 at 01:22 AM.
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