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The "Results of loading" dialog window displays the results of the loading process.The CPU mode selector is in the RUN position.
Procedure:
1. To start the primary CPU after loading is complete, select "Start module" in the "Action"
column.
2. To complete loading, click "Finish".
Result: The primary CPU switches to the RUN operating state.
3. Switch the backup CPU to the RUN operating state.
Result: After successful synchronization between the primary and backup CPU, the S7-
1500R/H system switches to redundant mode (system state RUN=Redundant).
Evaluating LEDs and displays at the CPUs
If the CPUs are in the "target" system state RUN-Redundant and there are no events,
requirements and errors, then the two CPUs show the following LED screens:
● the RUN/STOP LED lights up green
● the ERROR-LED is off
● the MAINT LED is off
The status information of the CPU is displayed on the display. In the system state RUNRedundant,
"RUN-Redundant" is displayed in a green bar on the two CPU displays.You have fully created and downloaded the configuration and the user program in
accordance with the task of the example.Below is a collection of links:
● for additional information on the systems and components which were used in the Getting
Started
● to tunnel automation

Click on the "Start search" button.
Result: The "Choose target device" table shows the CPUs in the H system. The
primary CPU is already selected.
6. Click "Load".
Result: The "Load preview" dialog window sets out the key information on the load
process to be run:
7. If the R/H system is not in STOP, stop the system. To do so, select "Stop RH
system" in the "Action" column of the drop-down menu.
8. Click the "Download" button to start the download.
The "Results of loading" dialog window displays the results of the loading process.The CPU mode selector is in the RUN position.

Establish connection for a session with an OPC UA server UA_Connect ✔ Fetching namespace index of a namespace URL UA_NamespaceGetIndex ✔ Registering node IDs on the connected server and fetching node handles in the form of a list UA_NodeGetHandleList ✔ Reading out the data from nodes of the connected server using the list of node handles UA_ReadList ✔ Writing the data in nodes of the connected server using the list of node handles UA_WriteList ✔ On the server, enable the node handles of the list used UA_NodeReleaseHandleList ✔ Terminate connection of a current session with an OPC UA server UA_Disconnect