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B8976060/02 3.3.2 Fundamentals of the Model Implicit Communication If you use implicit communication, the communications processor (CP) controls the communication. The types of communication in DP, ZP and GP in which communication is synchronized with the cycle and for which handling blocks are used to update information are exceptions. The difference between GP and DP/ZP is as follows: ➣ GP is used for communication only between active stations ➣ DP/ZP is used for communication between an active and a passive station. ➣ DP data exchange is only controlled by one master (polling). 3 - 15 Volume 1
