Loading the program automatically
If you activate the configuration in your PLC project , a dialog box opens where you can see or set whether the Autostart PLC Boot Project(s) is (are) activated.

The checkbox in the dialog indicates whether or not the autostart is currently activated for PLCs on the target:
- Checked: All autostarts on the target are set.
- Unchecked: All autostarts on the target are removed.
To change the autostart function for your PLCs, set or remove the checkmark in the checkbox. When you confirm your selection with OK, your entry will be saved and you will be taken to the TwinCAT Run Mode.
The option corresponds to the Autostart Boot Project command from the Project tab of the PLC project in the Solution Explorer.