Configuring the SIMATIC Rack PC 840
5-20
SIMATIC Rack PC 840  Manual
A5E00104826-03
5.5 The Power Menu
This menu has the following structure.
PhoenixBIOS Setup Utility
Item Specific Help
ESC Exit
Select Item
Select Menu
+ / –
Select
Change Values
Sub-Menu
F9
F10
Setup Defaults
Save and Exit
Power Savings:
Enter
Help
F1
Advanced
Security
Boot Sequence Version ExitMain
[Disabled ]
Power
Hard Disk Timeout: [Disabled]
APM (Advanced Power 
Management) allows APM 
aware software to manage 
power savings, if enabled
APM: [Enabled]
Disabled
Customized
Maximum Power Savings
Maximum Performance
Resume Time [00:00:00]
After Power Failure: [Last State]
Resume On Time [On]
Not valid for ACPI 
Operating Systems
Figure 5-15 ”Power” Menu
The Power menu offers a number of power saver modes for environmentally
friendly computing:
APM
(Advanced
Power
Management)
[Enabled] The operating system can shut down system 
resources when they are not needed. 
[Disabled] The operating system is denied APM access. 
Power Savings [Disabled] No power-saving functions
[Customize, Maximum Power Savings, Maximum Performance]
User-selectable and preset power saving functions 
for maximum and minimum power saving. 
You can set the parameters for Standby Timeout
and Fixed Disk Timeout or they are set  
automatically to their defaults.
Hard Disk 
Timeout
[Disabled] The hard disk does not shut down.
[6, 8, 10, 15] minutes since the last hard-disk access, the hard 
disk is shut down. 
The next time it is accessed, the hard disk starts 
spinning again after a brief delay.
Resume On
Time
[On] If this function is enabled the 
programming device is automatically
switched on at the preset time.
[Off] ’Off’ means this function is disabled.
Resume Time Time for automatic restart