Detailed descriptions 
  16.4 BIOS Setup 
SIMATIC Box PC 627 
Operating Instructions, Release 05/2006, A5E00362052-03 
16-37 
Entry  Meaning 
[Enabled]  The fan speed is controlled based on the temperature. 
Fan Control 
[Disabled]  The fan always runs at full speed. 
[CRT only]  A CRT monitor is addressed, or a DVI LCD monitor, if it is 
connected to the DVI ports when the system boots up. 
[LCD only]  The internal LVDS interface or the digital DVI interface is 
enabled, if a valid display ID was read during the boot sequence; 
if not, the procedure as for 'CRT only' applies. 
[Simultan. 
Auto] 
The two interfaces, CRT and LVDS, are activated when a CRT 
monitor is connected with valid display detection. The external 
monitor is only enabled for operation if it is connected and 
detected at the start of the boot sequence. Data are not output 
to an external monitor which is not connected until after the boot 
sequence. 
CRT / LCD selection 
DVI LCD and LVDS displays cannot be operated in parallel; LVDS takes 
priority over DVI! 
1) 
Optional product feature 
 
 
Note 
The second Ethernet interface support is OS dependent. For DOS based applications (e.g. 
Image Creator) please use the first Ethernet interface.