I am currently using the Step 7 microwin with the S7200. I am getting a fatal error "Compare contact range error" 5 to 6 times a day, and I'm not sure what that means or what I should be looking for. I wanted to see if someone has seen this error and knows what it means. I have swapped out all hardware with no luck. The hardware includes some AI4xTC modules, and Ethernet CP 243-1 modules.