What is the difference between the PC Adapter and the TS Adapter in communication between the PC and the S7?

Configuration Notes:The PC Adapter and TS Adapter differ with regard to their firmware, function and in the way they are parameterized: The MPI/DP/PPI interface for the PC Adapter is parameterized directly in the STEP 7 software using the Set PG/PC interface... function. The MPI/DP/PPI interface of the TS Adapter is parameterized from the TeleService software via the function Extras >