Communication
10.2 PROFINET
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
513
The PROFINET port on the CPU 1211C, 1212C, and 1214C does not contain an Ethernet
switching device. A direct connection between a programming device or HMI and a CPU
does not require an Ethernet switch. However, a network with more than two CPUs or HMI
devices requires an Ethernet switch.
①
②
The CPU 1215C and the CPU 1217C have a built-in 2-port Ethernet switch. You can have a
network with a CPU 1215C and two other S7-1200 CPUs. You can also use the rack-
mounted CSM1277 4-port Ethernet switch for connecting multiple CPUs and HMI devices.
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