Integrated Motor Encoder Issues

My team is using 4 IMEs but when we tried using them 3 of them gave out a solid red light and doesn’t give any values. The only one that works is the one directly connected to the cortex. Can anyone give any suggestions on this?

Test each IME individually to make sure they are working.

Make sure the cables are plugged in correctly, sometimes it can be a little hard to push them into the IME. Orange LED means that the IME has power but is not initialized.