Communication
10.2 PROFINET
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
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Data exchange between the I-device and a lower-level IO device
In this way, the I-device and its IO devices exchange data. The data transfer is through
There are basically two possibilities for configuration:
● Configuration of an I-device within a project
● Configuration of an I-device that is used in another project or in another engineering
system.
STEP 7 allows you to configure an I-device for another project or for another engineering
system by exporting a configured iDevice to a GSD file. You import the GSD file in other
projects or engineering systems as with other GSD files. The transfer areas for the data
exchange, among other data, are stored in this GSD file.
Configuration of an I-device within a project
1. Drag-and-drop a PROFINET CPU from the hardware catalog into the network view.
2. Drag-and-drop a PROFINET CPU, which can also be configured as an IO device, from
the hardware catalog into the network view. This device is configured as an I-device (for
example, CPU 1215C).
3. Select the PROFINET interface for the I-device.
4. In the Inspector window in the area navigation choose "Operating mode" and select the
check box "IO device".
5. Now you have the option of choosing the IO controller in the "Assigned IO controller"
drop-down list.
Once you have chosen the IO controller, the networking and the IO system between both
devices are displayed in the network view.
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