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
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Function Manual, 05/2021, A5E03735815-AJ
UDT "LocalizedText"
For the basic data type "LocalizedText", create the following PLC data type:
Figure 9-45 "LocalizedText" UDT
The EncodingByte indicates which fields (Locale or Text) are available:
EncodingByte Meaning
0 The fields Locale and Text are empty
1 The field Locale has content, the field Text is empty
2 The field Locale is empty, the field Text has content
3 The fields Locale and Text have content
UDT "ByteString"
For the basic data type "ByteString", create the following PLC data type; in this case, for
example, a ByteString array with 12 elements:
Figure 9-46 "ByteString" UDT