Canon MF211 Manual page 233

If the machine has not been operated or has had no data to process for a specified period of time, the machine enters sleep mode to
save energy consumption (Auto Sleep). Specify the period of time after which auto sleep is performed. Auto Sleep is not performed when
the setting menu is displayed. We recommend using the factory default settings to save the most power.
5 to 30 (min.)
Auto Reset Time
If a key is not pressed for a specified period of time, the screen and the settings are initialized to display the default screen (Auto
Reset). Specify the interval at which the Auto Reset is performed. Select <0> to disable the Auto Reset function. The Auto Reset is not
performed in the following cases:
The setting menu is displayed.
The machine is processing data, such as when printing documents.
An error message is displayed and the error indicator is blinking (However, Auto Reset is performed when the error does not prevent
the user from continuing to use a function.)
0 (Auto Reset is disabled.)
1 to 2 to 9 (min.)
<Timer Settings>
The screen displayed after the Auto Reset is performed can be selected in <Function After Auto Reset>.
Function After Auto Reset
Select whether to return the display to the default screen after the Auto Reset is performed. If <Default Function> is selected, the
display returns to the main screen for copy mode. If <Selected Function> is selected, the display returns to the main screen of the
function that was selected.
Default Function
Selected Function
<Timer Settings>
<Selected Function>
Auto Offline Time
If a key has not been pressed for a specified period of time after the screen below is displayed (the machine is set online for scanning),
the machine automatically becomes offline. Specify the time period at which the machine becomes offline. You can also set the machine
to remain online.
<Auto Reset Time>
<Function After Auto Reset>
Entering Sleep Mode
Set the Auto Reset time
Select <Default Function> or