Siemens SIMATIC Panel PC 870 Equipment Manual page 63

Entry
CRT / LCD
selection
LCD screen-
size
PS/2 mouse
* not available in the PC870 basic variant
Panel PC 870 Computing Unit Equipment Manual
Edition 12/01
Configuring the Computing Unit in the BIOS SETUP
All data are output only to the internal LCD,
LCD
the 15-pin VGA port is disabled
Enabled
For maximum resolution, the display signals are output
CRT
only to the 15-pin VGA port; the LCD interface of the VGA
Enabled
controller is disabled
Both display interfaces are operated simultaneously.
SIMULTAN
However, the LCD does not support all resolutions.
The display window in Text and Graphic modes is not
Normal
expanded to full screen size.
Only the Text modes are expanded to full screen size.
Text
expand
Graph&Text The Text and Graphic modes are expanded to full screen
size.
expand
The PS/2 interface is enabled (default). The trackball is
Enabled
thus enabled. IRQ 12 is occupied.
The PS/2 port is disabled; IRQ 12 is available.
Disabled
Note: Any change to this interface will not come into effect until
the computing unit is switched off and on again.
Meaning
5-11