Siemens SIMATIC S7-1200

Communication
11.2 PROFINET
S7-1200 Programmable controller
914 System Manual, V4.2, 09/2016, A5E02486680-AK
11.2.9.1
Establishing the hardware communications connection
The PROFINET interfaces establish the physical connections between a programming
device and a CPU. Since Auto-Cross-Over functionality is built into the CPU, either a
standard or crossover Ethernet cable can be used for the interface. An Ethernet switch is not
required to connect a programming device directly to a CPU.
Follow the steps below to create the hardware connection between a programming device
and a CPU:
1. Install the CPU (Page 61).
2. Plug the Ethernet cable into the PROFINET port shown below.
3. Connect the Ethernet cable to the programming device.
①
PROFINET port
An optional strain relief is available to strengthen the PROFINET connection. For ordering
information, see Spare parts and other hardware (Page 1564).
11.2.9.2
Configuring the devices
If you have already created a project with a CPU, open your project in STEP 7.
If not, create a project and insert a CPU (Page 154) into the rack. In the project below, a
CPU is shown in the "Device View".