Siemens SIMATIC ET 200AL, System Manual

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Functions
5.3 Shared device
PROFINET with STEP 7
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Function Manual, 05/2021, A5E03444486-AL
7. Finally, check whether the settings for access are "complementary" for each module or
submodule in both projects. This means that if the local CPU has access in one project, the
option "---" must be set in the other project and vice versa.
Special consideration: The option "---" for the PROFINET interface and therefore for the
ports makes the associated parameters read-only and not changeable. Parameters of the
PROFINET interface and port parameters can only be edited in the project in which the
PROFINET interface is assigned to the local CPU. The ports can be interconnected in both
projects regardless of this.
8. Check whether the same IP address parameters and device name are set for the shared
device in all projects.
Check whether the same S7 subnet ID is set in all projects for the subnet to which the
shared device is connected (subnet properties, "General" area in the Inspector window).
Note
If you make changes to the shared device: Make the same changes in each project on the
shared device. Make sure that only one IO controller has access to a module or
submodule.
Procedure - Adjusting the real-time settings
To ensure that all IO controllers and shared devices are operated with the appropriate send
clock and that the update times are calculated correctly based on the communication load,
you must adjust and check the following settings:
1.
Select the project whose IO controllers have access to the PROFINET interface and the ports
of the shared device.
2. Select the interface module of the shared device in the network view.
3. In the Inspector window, navigate to the "PROFINET interface > Advanced options > Real
time settings > IO cycle" area.