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
– Select the number of IO controllers (at least two) that will access the shared I-device
during operation ("Operating mode" > "Real time settings" area, "Shared Device" area).
6. Save the project.
7. Click the "Export" button ("Mode" > "I-device configuration" area, "Export general station
description file (GSD)" section).
If you do not change the name in the Export dialog, the GSD file has a name in the form
"GSDML-V2.31-#Siemens-PreConf_PLC-I-Device-20130925-123456", for example.
Procedure - Creating the PLC_1 project
To create the first project with a shared I-device, follow these steps:
1.
Start STEP 7.
2. Install the PROFINET GSD file from the export of the I-device CPU (PLC-I-Device).
3. Create a new project with the name "PLC_1".
4. Insert, for example, a CPU 1516-3 PN/DP in the network view. The name of the CPU should
be "PLC_1".
5. Insert the I-device from the hardware catalog (Hardware catalog: Other field devices >
PROFINET IO > PLCs & CPs).
6. Assign the IO controller "PLC_1" to the I-device.
7. Select the "Shared Device" area in the properties of the I-device.
In the table, all transfer areas and the PROFINET interface are assigned to the local
IO controller (PLC_1).
8. Define the transfer areas to which the PLC_1 CPU should not have access. Select the "---"
entry for these areas. These transfer areas are provided for PLC_2.
9. Save the project.
Procedure - Creating the PLC_2 project
To create the second project with a shared I-device, follow these steps:
1.
Start STEP 7 once again.
A new instance of STEP 7 opens.
2. In the new instance, create a new project with the name "PLC_2".
3. Insert, for example, a CPU 1516-3 PN/DP in the network view. Assign the name "PLC_2".
4. Insert the I-device from the hardware catalog (Hardware catalog: Other field devices >
PROFINET IO > PLCs & CPs).
5. Assign the IO controller "PLC_2" to the I-device.
6. Adapt the access to the transfer areas as in the PLC_1 project. Ensure that no duplicate
assignments result.