Digital Side Car Ports Imput Problem

[zbanks]

How are you wiring them?

The red & brown cables are +5V/GND respectively, the blue/yellow are the only outputs. They're labeled A & B on the encoder housing.

(I'm guessing this is your situation since, if memory serves me correctly, red & brown are on the outside. Also, with 4 encoders, you should only need 8 inputs, not 16)

What language are you programming in? Are you using the built-in encoder class?

[bls0620]

So I'm assuming you programmed all the DIO ports for the encoders? If not, you might want to recheck your program.