I am trying to RUN a program on SLC5/04 CPU but it keeps going into fault. Looking in the Data File S2 -- Status, there is a Major Fault S:6 = 154h. Description is: The module in slot 1, which is required for the user program is detected as being the wrong type. Does anyone have more information on what this fault is? I've checked my IO Configuration and I'm sure it matches what is on the rack...