I have the above CPU. I need to check if the onboard I/O are working. I am viewing it on line with Step 5. I have a manual for it, it has eight AI IW40...IW54, 0 - 10V, and a Analog output QW40 0 - 10V. I can drive a value to the output which I have tested with a meter. I want to use that output to drive the analogue inputs to test them. I have the pin out of the connector however when I connect the output to any of the inputs, the input value stays at KH=0000. Any ideas?