Functions
5.3 Shared device
PROFINET with STEP 7 V15
152 Function Manual, 12/2017, A5E03444486-AH
7. Adapt the parameters of the subnet and PROFINET interface. Because the shared I-
device involves the same device in different projects, these data must match.
8. Save the project.
Both projects now have an identically configured shared I-device. The IO controller access
and the parameters of the PROFINET interface should still be checked in the different
projects during the next step.
Summary - Assigning parameters for access to the shared device
The transfer areas are automatically assigned to the local IO controller. To change the
assignment, follow these steps:
1. Click the "PLC_I-Device" device in the network view of the "PLC_1" project, and select
the "Shared Device" area.
2. A table shows which CPU has access to each of the configured transfer areas. The
default setting is that the local CPU has access to all modules and submodules.
3. Keep the setting "PLC_1" for all transfer areas that are to remain in the address range of
the local CPU
Select the setting "---" for all transfer areas that are to be located in the address range of
the "PLC_2" CPU from the "PLC_2" project. This means that an IO controller outside the
project is to have access to the transfer area.
4. Follow the same procedure for the remaining projects.
5. 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.
6. 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 I
-device (e.g., change the number or length of the transfer
-device as a GSD file again. Re-install the GSD file in each project that uses
-device as a shared device. Make sure that only one IO controller has access to a
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