Siemens SIMATIC PANEL PC 877 Operating Instructions Manual page 209

Assignment of the display to the display select pins
The display select inputs are used to configure one of 15 possible displays automatically.
The display select inputs are equipped with pull-up resistors, i.e., these inputs have a high
signal if they are not connected. The input must be connected to GND if a low signal is to be
generated.
Pin No. LCD_SEL3
0 low
1 low
2 low
3 low
4 low
5 low
6 low
7 low
8 high
9 high
10 high
11 high
12 high
13 high
14 high
15 high
SIMATIC Panel PC 877
Operating instructions, Release 07/2006, A5E00877780-01
LCD_SEL2 LCD_SEL1
low low
low low
low high
low high
high low
high low
high high
high high
low low
low low
low high
low high
high low
high low
high high
high high
LCD_SEL0 Display type
low reserved
high 1280x1024 (SXGA), TFT, 2
x 18-bit, LVDS channel 1
and 2
low DVI LCD 640 x 480
high DVI LCD 800 x 600
low 640 x 480 (VGA), TFT, 18
bits, LVDS channel 1
high reserved
low 1024 x 768 (XGA), TFT, 18
bits, LVDS channel 1
high 800 x 600 (SVGA), TFT, 18
bits, LVDS channel 1
low reserved
high reserved
low reserved
high reserved
low Reserved 1024 x 768
(XGA), TFT, 2 x 18-bit,
LVDS channel 1 and 2
high DVI LCD 1024 x 768
low DVI LCD 1280 x 1024
high No LVDS display or DVI
LCD with automatic DDC ID
Detailed descriptions
17.1 Motherboard
17-17