Mach Discussion > General Mach Discussion

How to over ride limit switches?

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freshwatermodels:
I just installed limit switches on my gantry router.   I am using a Gecko G540.   The limit switches work great but once they are tripped I don't know how to disable them to start the machine again.  Where is the override button in Mach3 ???

Thanks for any assistance you might offer!!!

Jack

Hood:
You have two options and both on Settings page.
1. OverRide Limits, this will allow you to press the Reset and jog off the limit but will need pressed every time you hit a limit.

2. Auto Limit OverRide, this stays set and will allow you to just press the reset and jog off a limit right away without having to go to the settings page.

You should also look into setting the softlimits up, it will 99.99% of the time stop you actually hitting the physical limits.

Hood

freshwatermodels:
Hood,

Thanks, got the auto limit override set up!   It seems to require me to reset try jog reset again and then jog works to get off the limit switch.  Is this correct? 

I will look into setting up the soft limits as it makes sense to use software rather than hardware when possible.   I like "belt and suspenders" approach when it comes to a dangerous machine.

I have to say that I like the Mach3-Gecko G540 system!

Again, thanks for your patience!

Jack

Hood:
It should allow you to Jog off after pressing the Reset once only. I suspect your switches are a bit bouncy and Mach is seeing them close as you start to jog off but then they open for a micro second and Mach reasserts the E-Stop condition. You could try increasing the debounce interval on the General Config page, try 2000, if it helps then work your way down to the lowest number you can.

Yes I agree, I wouldnt have a machine that does not have physical limit switches either.

Hood

freshwatermodels:
Hood,

Thanks, no more bounce at value of 10.   Very nice indeed.

I have been tinkering and am getting 200 ipm rapids.

Now all I have to figure out is how to configure Soft Limits and Home. 

Hope you don't mind more questions. I sure appreciate your help.   I think when this machine is properly configured I will have learned a bit and have a good machine.

Regards,

Jack

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