S7-1500 specific methods and steps of data exchange between CPU and OPC UA server through OPC UA client

S7-1500 CPU adopt OPC UA The client and OPC UA Specific methods and steps for server data exchange

 Specify client interface , Add the to access for this interface PLC Variables and PLC Method .
 Configuration and OPC UA Server connection .
 Use OPC UA The client instruction implements read access .

Action obtained OPC UA Operating system license for functions .
Siemens S7-1500 V2.6 And above support OPC UA Client function , utilize TIA V15.1 And above , Configurable and programmable reading OPC UA In the server PLC Variable OPC UA client , Can also be PLC The new value of the variable is passed to OPC UA The server . Middle note can also be invoked in user program. OPC UA Server provided method .OPC UA Client instructions are based on “ accord with IEC61131-3 canonical PLCopen OPC UA client ” .