Configure plant object types (RT Unified) - WinCC Unified

Introduction

Configure the plant object types either from the function blocks and PLC user data types of an S7-1500 or create the properties and the external and internal data members for the plant object types.

In both cases you can extend the structure the created plant object types with additional internal or external data members.

Configuration without using function blocks is described below.

Requirement

• The WinCC Unified PC RT HMI device has been created.

• A plant view has been created and assigned to the HMI device.

• A plant object type has been created.

• A SIMATIC S7-1500 PLC has been created.

• Tags have been configured in the S7-1500.

Procedure

1. Double-click the plant object type in the "Plant object types" editor.

   An empty plant object type with the "Struct" data type appears under "Interface".

2. To add data members to the plant object type, select the plant object type and click "Insert object".

   

   The created data member inherits all properties from the higher level plant object type.

   "Internal communication" is selected by default in the column "Communications driver" for the newly created data members of the plant object types.

3. If you want to configure an external data member, select "SIMATIC S7-1500" in the "Communication driver" column.

4. Assign a PLC tag to the external data member in the "Tag" column.

Note If an HMI device is assigned to the plant view, it is possible to view the data members in the "HMI tags" editor in the "Plant object tags" tab. You also have write rights for the "Comment" column. You can also use the configured data members in screens of an assigned HMI device, e.g., for dynamization instead of tags.