Hi, i am new to cnc and have a problem i need some help with please. I need help with my limit switch problem?
I`m new to cnc and this forum, i have built a router and controller but can only get it to work without limit switches pluged in.
My settup,
4 steppers, one slaved to the y axis.
E stop wired NO on pin 10
limit switches, 2 each axis all 6 wired NC in series on pin 11. Active low.
The problem, the nachine will only run if the limit socket on my controller is not pluged in as soon as i plug it in even with machine idle but under mach control the reset button comes on and advises limit activated.
I have tried limits active high, no result.
i am getting very frustrated with this, the machine runs well without the limits pluged in but i do not want to run the risk of machine damage if i get a problem, i also want to use the same switches for homing but i need the limit problem solved, new to this so to solve one problen at a time.
Hope i can get some help.
Best wishes to all.
Billy
Have you changed the debounce setting?
Try installing a value of 1000 for starters. If it works, try 500, keep going less and less. Switches especially cheap mechanical ones are prone to bounce. Mach sees this as a trigger. If you lengthen this time (debounce) the signal must be present for the set time to be recognized. Try this first.
It could also be a ground issue but more on that later.
Do not switch to an NO set of switches. NC is the safest way and will come to a halt if ANYTHING in that circuit should fail. Better safe than sorry.