E stop only works when active high is set, which is wrong!

[amd7000]

Hi guys. I'm getting close to finishing my machine. Up until now everything works great, I've cut out a few bits etc. to test the machine. But I'm having problems now I've fitted my estop. It's a nc estop. When I set it to active low in the ports and pins menu the machine cant be reset in mach3 when the circuit is open or closed, but when I set it to active high it works but only when the switch is pressed so it works the wrong way round only.

The estop led is working correctly in the diagnostics, it turns on and off in active low and high mode, it just wont allow me to reset mach3 in active low mode when the estop is released. I'm using a z5pa bob which I'm thinking my be confusing matters. I'm using the machine with the estop pressed in at the moment. I've set my estop to port 1 and pin 15 as stated in the manual. Any ideas? Cheers

[JAZZCNC]

May sound daft Q but you have checked the E-stop Contact is NC.?

[amd7000]

Yea, the estop has nc marked on it. If I adjust to the mach3 settings to low active it just says e stop requested even though the led for estop only lights up when the estop is pressed. I haven't got a clue what's going on.

[JAZZCNC]

Yea, the estop has nc marked on it. If I adjust to the mach3 settings to low active it just says e stop requested even though the led for estop only lights up when the estop is pressed. I haven't got a clue what's going on.

Thats what it should do.? The LED should only come on when E-stop is pushed in. It's informing you that an E-stop occured.
When you release the E-stop button the LED goes OFF and Mach will then allow Reset.

NC means the Circuit is closed before the E-stop is pushed. So when pushed the Input you used for E-stop is pulled Low or high and that's why you use Active Low or high mach knows when that input goes Low or high and E-stop is active. The LED comes on to inform you.
This does depend on your BOB Input some are Pulled High or Low with pull up/down resistors in which case you just change the active state to match.

Yea, the estop has nc marked on it.

Don't trust the markings test it.! . . . When released you should get continuity between terminals if it's NC. When pushed there should be none.

[amd7000]

Thats what it should do.? The LED should only come on when E-stop is pushed in. It's informing you that an E-stop occured.
When you release the E-stop button the LED goes OFF and Mach will then allow Reset.

That's the problem, it wont allow Reset when set to active low and when the estop is off(not pressed) even though the diagnostics say the estop isn't active. I can Reset when I set active high but this is when the button is pressed in, which is wrong?

Haha, I'm rubbish at explaining things.

[JAZZCNC]

Sounds to me like you may be using the wrong Input number or not set the port number or something then because mach isn't seeing the pin state change.

If you had the correct pin number then toggling the Active state would work no matter if your inputs used pull up or down resistors.

Not using the correct pin/port number or a Blown input is the only thing that would do this. The fact Mach resets when you toggle Lo active just means your tricking mach into thinking E-stop is there. It's basicly watching that input to go high which never will because you have the wrong Input number or it's dead.!