Q. I have programmed the multiplexing logic into my 240/250 but the data is never changing and the channel ID bits are not changing. What's wrong?
A. Most likely the pointer data for the slot your analog module is in is not zeroed. If your F2-4AD2DA is in Slot 0 make sure V7660 and V7670 contain zeros, then power cycle the PLC.

Q. I connect the F2-4AD2DA current output to my device and I'm not getting any output.
A. The current outputs on the F2-4AD2DA are current sinking outputs. Make sure the device you are connecting to is a current sourcing input.