Hello Alejandro Castano,

       You might get this kind of issues if the hardware configuration has changed since the last       compilation run. Click On Block Driver Settings and Enable the Additional library for module drivers. Kindly refer the attached screenshot for the reference

• Generate module drivers" option: ​

The check box is selected by default, in other words, the driver generator will also be started prior to each compile. In special cases, such as if the hardware is still incomplete, you can clear the check box for a compile process so that the function "Generate module drivers" is not executed.

• "Module Driver Setting" option: ​

The driver generator creates and interconnects module drivers for the existing signal-processing blocks, if the hardware configuration has changed since the last compilation run. If you do not want to use the driver blocks from the current PCS 7 Library, you can use the "Block Driver Settings" button to open a dialog box where you can select the required driver library.

I hope it might help you!

1. Check for inconsistent or conflicting blocks in the CFC charts.
2. Try compiling without module driver generation to see if the issue is specific to that process.
3. Perform an other project reorganization after the CPU exchange.
4. Review logs in WinCC Diagnostics and SIMATIC Diagnostic Buffer.
5. Compile the project in smaller parts to isolate the problem.

If none of these steps resolve the issue, you may need to contact Siemens Support for more in-depth troubleshooting specific to your setup and configuration using below link.