Chief Delphi - Limit Switch Basics

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JWSnedden

27-11-2006 20:21

Limit Switch Basics

How do you program limit switches?

RyanN

27-11-2006 20:36

Re: Limit Switch Basics

Quote:

Originally Posted by JWSnedden

How do you program limit switches?

I am not the programmmer, but I am the electrician on our team. A limit switch plugs into a digital I/O port on the controller. The switch is closed when the negative is applied (or so I believe and please correct me if I'm wrong). As far as the programming, I have no idea. So it uses the black and white wires of a PWM cable. When the switch is closed, the program is supposed to respond.

JWSnedden

27-11-2006 20:40

Re: Limit Switch Basics

Quote:

Originally Posted by RyanN

yes, we knew that. We need to program it. Thank you, though.

Mike Betts

27-11-2006 20:49

Re: Limit Switch Basics

JWS,

When the switch is closed, you will read a 0 and then the switch is open, you will read a 1...

Code:

if (rc_dig_in15 == 0)  

  {

   // This will execute when the signal on input 15 is grounded.

  }

  else                   

  {

   // This will execute otherwise (when the switch is open).

  }

Does this make sense?

Mike

JWSnedden

27-11-2006 21:34

Re: Limit Switch Basics

Yes Thanks very much!

Stuart

30-11-2006 18:58

Re: Limit Switch Basics

#define leftLS rc_dig_in15
#define rightLS rc_dig_in14

if(leftLS == 0)
//the left limit switch is on
//dont turn left any more
if(rightLS == 0)
//the right limit switch is on
// dont turn right any more

//this post made more since before the nevermind

JWSnedden

30-11-2006 19:48

Re: Limit Switch Basics

Thanks anyway!

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