Siemens SIMATIC S7-1500 Function Manual page 213

OPC UA communication
9.3 Using the S7-1500 as an OPC UA server
Step 2: Creating PLC tags for the Euromap 77 instance in STEP 7.
For Euromap 77, you must provide PLC tags and server methods in your user program and
assign the instance of the "IMM_MES_InterfaceType" type.
To create PLC tags for the instance of the "IMM_MES_InterfaceType" type, proceed as
follows.
1. Create a user-defined data type (UDT).
The figure below shows the beginning of the user-defined data type "InjectionUnit" as
example.
This data type has the same structure as "InjectionUnit" in the type
"IMM_MES_InterfaceType".
Make sure that you use SIMATIC data types that are compatible with the OPC UA data
types (see "Mapping of data types" below).
Figure 9-39
2. Add a new global data block to your STEP 7 project.
In the example, name the data block "IMM_Manufacturer_01234", so that there is a
reference to the injection molding machine of the respective manufacturer and the serial
number.
3. Create a new element in this data block.
In the example, name this element "InjectionUnit_1"
4. Assign the new user-defined data type "InjectionUnit" to this element.
Result
In your STEP 7 project, you have created a tag for the Euromap 77 in the
"IMM_Manufacturer_01234" data block.
212
Creating a UDT in STEP 7
Function Manual, 11/2019, A5E03735815-AH
Communication