We have a chiller at our powerplant facility that we are communicating via MODBus RS484 using prosoft mnet card in our contrologix 5000 PLC. We have our communication already set and read write register tags in the plc. But the issue i have is one of the input register gives us diagnostic code and each code means something(for example if code value is 215 it means over voltage). There are over 100 codes and they all mean something. What would be the best way to convert these codes into an alarm description in the plc? Thanks in advance.