Pepperl+Fuchs VisuNet RM Shell 6 Manual page 119

VisuNet RM Shell 6
Factory Reset
Enter the Factory System when the RM Shell is crashed
1.
Power off the unit completely.
2.
Power the unit back on. During the initial boot sequence, repeatedly press the "F9" key.
3.
When you see a menu on a blue or black background, stop pressing the "F9" key.
Figure 10.2
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