Siemens Simatic 620 User Manual
Page 153
Hardware Information
7-21
SIMATIC Box PC 620 Manual
A5E00131465-01
Allocation of the Display to Display Select Pins
The automatic configuration of one of 15 possible displays is effected via the
Display Select Inputs. The Display Select inputs are fitted with Pull-Up resistors,
i.e. if these inputs are not connected, they have a high level. In order to generate a
low level, the input must be connected to GND.
Pin No. LCD_SEL3 LCD_SEL2 LCD_SEL1 LCD_SEL0 Display type
0
low
low
low
low
reserved
1
low
low
low
high
reserved
2
low
low
high
low
reserved
3
low
low
high
high
reserved
4
low
high
low
low
640 x 480 (VGA), TFT,
18 bits
5
low
high
low
high
reserved
6
low
high
high
low
1024 x 768 (XGA), TFT,
18 bits
7
low
high
high
high
800 x 600 (SVGA), TFT,
18 bits
8
high
low
low
low
reserved
9
high
low
low
high
reserved
10
high
low
high
low
reserved
11
high
low
high
high
reserved
12
high
high
low
low
reserved
13
high
high
low
high
reserved
14
high
high
high
low
reserved
15
high
high
high
high
No display / DDC selec-
ted display