Siemens SIMATIC ET 200AL, System Manual

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OPC UA communication
9.3 Using the S7-1500 as an OPC UA server
Communication
Function Manual, 05/2021, A5E03735815-AJ
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9.3.4.4 Creating a user-defined server interface
Introduction
The description is based on the following example:
A protective fence surrounds the production cell "Cell_1". The fence is equipped with the gate
"Gate_1".
An S7-1500 CPU controls the entire production cell and also controls access through Gate_1.
A robot packs drugs into boxes in the production cell and then stacks the boxes on pallets.
Self-driving vehicles for automated material transport move the pallets to the central
warehouse, thereby passing through Gate_1.
The CPU publishes a server interface via which the driverless transport systems arrange for
Gate_1 to open.
The server interface contains the server method "smOpenGate" for opening the gate and the
tag "Gate_1_State" which indicates the status of the gate (open or closed).
Creating a user-defined server interface
To create an Server interface, follow these steps:
1.
Select the CPU that you have used and configured as OPC UA server.
2. Click "OPC UA communication > Server interfaces".
3. Double-click "Add new server interface".
STEP 7 displays the following dialog.
Figure 9-36 Adding the server interface
4. Change the name of the new server interface so that it is descriptive in your project.
In the example, change the name "Server-interface_1" suggested by STEP 7 to "Cell_1".
5. Click "Server interface" and then "OK".