Wiring limits switches in series

[BOBINETTE]

Hi, another question about limit switches, do these switch are NC or NO when connected in series.
I have asked this question in the bottum of another tread but most likely nobody have seen it.
Thank you

[jalessi]

Bobinette,

For safety reasons the preference is N.C., that way if a wire ever breaks it will trigger a limit condition.

Jeff...

[BOBINETTE]

Hi, the switches are all connected and now i'm having all the limits switch trigered and can't shut them off.
I am using Mach3 with the Hobby CNC Pro controller, in the diagnosis page I have alarms in Y,Z and A the wierd thing is that there is nothing plug to the A input for the ports and pins, what I have is X,Y and Z and no mather if I select active high or low the alarm keeps returning.
Any solution is elcome
Thank you

[jalessi]

Post a diagram of how you have the switches attached to the Hobby CNC Board.

[BOBINETTE]

On the board I have the E Stop connected to pin 15, probe to pin 13, limit switch to pin 13 and home and limit switch to pin 11 and the second wires of each of these leads to the COM pin.
Hope this gives you an idea.
Thank you for your time

[BOBINETTE]

Originally Posted by BOBINETTE On the board I have the E Stop connected to pin 15, probe to pin 13, limit switch to pin 13 and home and limit switch to pin 11 and the second wires of each of these leads to the COM pin. Hope this gives you an idea. Thank you for your time

It looks something like this

[jalessi]

Did you configure the limit and home pins in Mach3?

[BOBINETTE]

Yes they are, mean time I went to Mach3 tutorial and might found something, can you give your opinion if I should use a resistor on one of the leads, this is the URL http://www.machsupport.com/docs/Mach...all_Config.pdf on page 43.

When I shut down the controller I manage to shut the alarms off by putting the switches at active high in Mach3 but as soon as I turn on the controller, I can't shut them off, I have tested if there was any resistence on the leads 11 and 12 and get about 3.5 ohms on 13 and 15 nothing

[jalessi]

Isn't there a resistor network part # RN4 on the Hobby CNC Pro?

[BOBINETTE]

I have RN 1,2,3 but no 4

[jalessi]

Do you have a instant messenger?

Can you take a digital picture of your board?

[BOBINETTE]

Sorry I don't have instant messenger, but I can take a picture of the board, but i'm afraid that the pic will be to big to post