Which key sequence helps to access the controlled start screen while powering on the controller?

The key sequence that helps to access the controlled start screen while powering on the FANUC controller is the combination of PREV and NEXT. This sequence is essential for navigating through the initial setup process or configuration settings that might need to be reviewed or adjusted before operation begins. When you use these keys during the power-up phase, it allows operators to access critical screens for verifying system status, parameters, or other necessary configurations.

This setup is key for ensuring that the machine is prepared for operation according to the desired specifications or conditions set for the job. Each key serves a distinct purpose in navigation, where PREV typically allows you to move backward through your options and NEXT allows you to move forward, creating an intuitive method to quickly access different settings without requiring a more complex input method or touching multiple menus.