Kinda Pissed.... With Limits and Offsets...

[sunmix]

Okay, this is the thing....

I have my Mach2 set up for routing... Everytime I reboot Mach2, my machine coordinate will change.... So, I couldn't set any offset position... So, I have to use switches for homing the axes.... But everytime it homes.... Every axis will smash the switches and stop. I've spoiled a lot of switches. I'm not blaming Mach2 and Art, I just want to know how to solve it... Please... Help me someone...

[ger21]

If you manually push the switch before the machine hits it, what happens? Does it stop?

[ynneb]

Mach2 alows you to set the homing speed to a slower speed if you want. Its somewhere in the settings, I remember seeing it. If you still cant find it ill send you note down a description where to find it.

I never use offsets, I always manually position the tool to the corner of the material to be cut, no matter where it is on the table.

[ynneb]

Set the percentage to say 5% and see what happens.

[HuFlungDung]

Your machine axis should not be dead-ended against the limit switches. Use a positive mechanical bumper to limit the extreme axis movement, and use some kind of an actuation lever or ramp to operate the switch as the machine moves past it.

[Mariss Freimanis]

Homing switches have to have some over-run area behind them. Here's how a typical homing routine runs:

1) On "Home" command, accelerate and run towards the home switch.
2) Home switch active? No: repeat (2), Yes: go to (3)
3) Decelerate to a stop. Reverse direction.
4) Move 1 step.
5) Home switch active? Yes: go to (4), No: go to (6)
6) Stop. Clear the axis position counter. You are at the 'Home' position.

I think it's clear from this the axis must over run the home switch. It then backs off of the switch one step at a time until it finally comes off of the switch.

Mariss

[sunmix]

Wow, thanks for all the replies... I have to try everything out, and I will give u the answer ASAP. Thanks guys!