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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By mapping between FB type information / UDT type information and OPC UA type
information, STEP 7 is able to create all instances present in the program as nodes in the
server interface. You have the option to generate these nodes together with a new server
interface or to generate these nodes in an existing server interface.
Rules
•
Only the FB elements in the "Static" area of an FB interface can be mapped to OPC UA type
descriptions.
•
When mapping the data types, OPC UA elements from the same FB interface or from the
same UDT must always be selected for an object. Mapping from different FBs or UDTs to
an object is not permitted.
Requirement
•
The FB types used, defined in the "Static" area of an FB, must be configured as "Accessible
for OPC UA".
•
The UDTs used must be configured as "Accessible for OPC UA".
•
A nodeset file (XML file) is available with OPC UA data type definitions that match the FB
types or UDTs defined in user program (can be mapped).
•
The user program with the FB instances and UDT usages is available.
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