2 channel input 2 bit binary ouput 1

[PNA]

this is for a programmable controller.
in order to select 1 of 4 available programs, we need to have a 4 position rotary switch and provide 00 01 10 11 binary output.

of course the controller supplier cannot specifically tell us what to purchase

i have looked a rotary BCD's rotary dips etc

any help would be appreciated

thanks

Paul

 

[VEBill]

You could purchase a rotary switch (2 pole, 4 position) and wire up some diodes and pull-up resistors to make your own binary-output rotary switch.

 

[PNA]

something off the shelf would be ideal,

thanks anyway

 

[VEBill]

http://www.ittcannon.com/media/pdf/catalogs/Leaf/RTA_1apr.pdf

??

 

[VEBill]

http://www.fujielectric.co.jp/fcs/eng/product/control/pdf/DEC1904a_P207_213.pdf

 

[VEBill]

http://www.google.com/search?q=rotary+switch+binary+shaft+.pdf+-dip

lots...

 

[PNA]

Thankyou very much!

Sometimes its just the way i format my searches, i get everything but what i want. Much appreciated

Paul

 

[logbook]

VB1BLL,
>You could purchase a rotary switch (2 pole, 4 position) and wire up some diodes and pull-up resistors to make your own binary-output rotary switch.

I didn't get why you think you need diodes. It's just a straight forward 2 pole 4 way rotary switch and two pull-up resistors.

 

[VEBill]

Ah... The diodes are, ah, my normal fee for wiring up the, ah, two pull-up resistors and one rotary switch.