Limit switches problem

[kjetilhansen]

Hello,

I have a case with my Mach3 software, regarding values and limit switches.

I read that when the tool moves ( I have a shapeoko with gecko 540) and
X + moves right
Y + moves away from you
Z + moves up

This is my setup:



Soft limits works great for the X axis, but not for Y and Z

In the "Soft max" for Y, if i put 10 in that value when homing i can drive 10mm past the home switch, if i put -10 nothing happens... I can drive it both ways...


How can I fix this?

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[ger21]

Is the switch at 0? Which direction does it home?

[kjetilhansen]

What do you mean with 0?

It homes down left, so X- to Y+

[ger21]

If you enter Softmax of 10 for the Y axis, that would be 10mm from the left side.
If the Home switch is on the left, then you want to set the SoftMin to 10. The Softmax would be the extent of your axis, like the 250 in your screenshot.

[kjetilhansen]

Just to ask, you say Y axis left side, but the Y axis is the one with two motors, that holds X and Z axis?

Y= in/out X=left/right Z= up/down?


But yeah, it homes back left, and when I drive the X axis left it stops (soft limit) at 521mm

But the Y axis is the wrong way... If i set soft max to 250 it will let me move the axis past the end stop that it homes to, and if i set it to -250 it won't stop when I jog it 250mm away from the end stop.

[ger21]

If you home to the positive end of the Y axis, then you should use a Home Offset of 250, or whatever the Y max is.

As it is now, your SoftMax would be -10 and the SoftMin would be -250.
Using a HomeOffset of 250, SoftMin would be 10, and SoftMax would be 240.
These numbers need to be adjusted based on the actual length of the axis.