Introduction
To establish the communication between a S7-1500 controller and a WinCC Unified PC RT device, connect a plant object with a PLC tag or a data block of the PLC.
Requirement
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An S7-1500 PLC and a WinCC Unified PC RT HMI device are configured and connected.
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At least one plant object type in the project contains PLC user data types or function blocks (FBs).
Procedure
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Drag a plant object type to the plant view.
The plant object is created based on the plant object type.
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Double-click the plant object.
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In the "Interface" tab, in the "Connection" column, select the configured HMI connection for all external data members of the plant object type.
Select only between the HMI connections that are created for the S7-1500 controllers available in the project.
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In the "PLC tag" column, select a PLC tag.
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Note In the "Interface" tab, similar to in the "HMI tags" editor, you can view or edit the properties in the following areas:
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