Thread: Interfacing with Allen-Bradley Sensors
View Single Post
  #3   Spotlight this post!  
Unread 23-01-2006, 17:29
cbolin's Avatar
cbolin cbolin is offline
Programming & Electrical
FRC #0342 (Burning Magnetos)
Team Role: Mentor
  
Join Date: Jan 2004
Rookie Year: 2004
Location: Charleston, SC
Posts: 72
cbolin is a splendid one to beholdcbolin is a splendid one to beholdcbolin is a splendid one to beholdcbolin is a splendid one to beholdcbolin is a splendid one to beholdcbolin is a splendid one to beholdcbolin is a splendid one to behold
Re: Interfacing with Allen-Bradley Sensors
Hi,
We use 3-wire, PNP prox switches. Our hookup looks like this.

Brown +12V
Blue 0V
Black (signal) to digital input (sig).

Now, to get the program to actually see the input we had to add 'pull-down' resistor.

We placed a 4.7K resistor between black (signal) and blue(0v). Works well.

Programming, we got satisfactory results sampling every 1 mSec. We use two prox switches to count gear teeth.

Regards,
ChuckB
__________________
Team 342 Programming & Control Systems
Good luck and have fun!