Hello. I tried using the USB-8451 Test Panel. I want to swith the DIO lines, but only BIT 0 works. None of the others respond. In fact, I tried using them as inputs, but they still don't work. These DIO lines have never been exposed to high voltage, or any kind of contention because this is the first time using these lines. I am not sure if my problem is in software, or the hardware. Am I doing something wrong? Please be advised that one DIO line works, so I must be doing something right.
Thanks, Richad V