[RouteBot]

I'm new to Mach3 and just finished building a CNC router. I was able to get my soft limits working. However, I thought I could make my min 0 for X and Y and it would not activate my hard limits.

Here is a picture of the current settings



To make the mill stop before I hit the hard limit, I need to enter .25 for Soft Min in X and Y. For the Z axis, a Soft Max of 0 stops well short of hitting the hard limit. I thought the X and Y should work like the Z.

Also, if I enter .2500 in the Home Off field it gets changed to .2499 in the X and Y. Seems like something is causing X and Y to act different than the Z. Any ideas of what to check or is this normal?

Thanks,

Allen

[ger21]

I've never used Softlimits, so I'm not really sure about those questions.
The Home Offset is probably a rounding issue due to your steps/unit setting.

[RouteBot]

I've never used Softlimits, so I'm not really sure about those questions.
The Home Offset is probably a rounding issue due to your steps/unit setting.

I figured it might be something like that. Just wanted to see if it raised any potential flags. The soft limits are good when learning because it slows down before it stops. However, it's easy to forget to turn them on and off.

[RouteBot]

I've never used Softlimits, so I'm not really sure about those questions.
The Home Offset is probably a rounding issue due to your steps/unit setting.

Just figured out the soft limit issue. The X and Y are reversed in the home/limit screen such that they move in the right direction. So I had to make the offset -.25 for X & Y. The Z offset is .25.

[KH0UJ]

You dont actually need the limit switches, all three of them (XYZ) it will create problems in the future specially if it`s already contaminated with dust, you can zero the machine anywhere in your table, it`ll give the machine versatility, you know what you know the size of the material in the first place, anything that fits on your table is all good, you can zero anywhere on your loaded material, it depends on how you set-up the zeroing on the CAM software on anywhere of the table/spindle coverage. you dont even need to use the zeroing tool, practice zeroing on the material itself even if it`s nested CAM or just a plain outlining job.