Communication processor and Modbus TCP
13.4 Universal serial interface (USS) communication
S7-1200 Programmable controller
1148 System Manual, V4.2, 09/2016, A5E02486680-AK
The blue arrows indicate the flow of bidirectional communication between devices.
Note
With version V4.1 of the S7
-1200, you can use the point-to-point instructions for all types of
-to-point communication: serial, serial over PROFINET, and serial over PROFIBUS.
vides the legacy point-to-
point instructions only to support existing programs. The
legacy instructions still function with all S7
-1200 CPUs. You do not have to convert prior
programs from one set of instructions to the other.
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