Topics

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General Mach Discussion / Limit tripped but nowhere near switch?

« on: September 13, 2019, 01:41:41 AM »

I was machining some mild steel yesterday and the limit kept tripping however I was in the center of the table with no switch anywhere close.

Does mach3 or perhaps the control board have a builtin feature where the limit will trip if the tool encounters too much resistance? Maybe as a feature to prevent damage to the machine when you crash the tool into something you cant cut?

I assumed this was the case because the machine works great everywhere else except when I was trying to use the side of the mill to cut with, and there and only there did the limit keep tripping.

fyi I have a C10 breakout board.

If this is a feature what is it called?

THanks!

2

General Mach Discussion / Why are x++ and x-- separate?

« on: February 11, 2019, 05:07:00 PM »

Even if you have a separate limit switch set to both x++ and x--, triggering either one will prevent you from moving again in the opposite direction from the direction that was triggered.

Shouldn't there be a way that mach knows which direction it was moving when it triggered the limit, and then allow you to move in the opposite direction without triggering again? otherwise whats the point for having the option to have both inputs?

3

General Mach Discussion / How to make limit only trigger in one direction?

« on: February 09, 2019, 06:28:27 AM »

I have the z-- limit set to pin 13 and the z++ limit is NOT set to that pin; the switch on pin 13 will trigger when moving in the negative direction as it should, but then after I hit reset and try to move the opposite way the limit will trigger once more as the switch is opening.

So how do I make the z-- limit switch only work when the Z axis is moving in the negative direction?

Thanks!