Mux/Dmux

[Glenn31]

Hello, need a little advice for a beginner.

I am wanting to create a test for a 6 core cable. The basic test is to apply 5 volts to each core then check if each core has voltage on and not shorted then output to the PLC saying ok.

My idea is to use a 3 input mux chip (inputs from the PLC) to apply the output voltage onto each core in turn. (i believe this is simple enough to do) but then..

Is there a way i can have a 6 input chip, depending which input is on will give me a 3 bit binary output i could put into the PLC?

Any help is much appreciated, cheers.