Siemens SIMATIC S7-1500 System Manual page 376

"Load preview" dialog window
If necessary, the project data is compiled before the download. You can only load project data
that is consistent and has been compiled without errors.
The "Load preview" dialog window sets out the key information on the load process to be run:
Procedure
1. After compilation, check the messages in the "Load preview" dialog window.
2. If the S7-1500R/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.
3. Click the "Download" button to start the download.
Starting the CPU after loading
The "Results of loading" dialog window displays the results of the loading process.
CPU startup with user program with errors
Before starting the CPU, make sure that a user program with errors:
• Cannot cause damage or injury
• Will not lead to dangerous system states
Requirement
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 SYNCUP, the S7-1500R/H system switches to redundant mode.
S7-1500R/H redundant system
System Manual, 01/2024, A5E41814787-AF
WARNING
Commissioning
12.3 Commissioning procedure
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