Detailed descriptions
16.1 Motherboard
SIMATIC HMI IPC677C
208
Operating Instructions, 04/2013, A5E02722710-04
Pin no.
Short description
Meaning
Input / Output
18
P12VF
+12 V fused
Output
19
P12VF
+12 V fused
Output
20
P12VF
+12 V fused
Output
Assignment of the display to the display select pins
One of the 15 available displays is configured automatically via the display select inputs. The
display select inputs are connected to pull–up resistors, i.e. if these inputs are not
interconnected, they are high level. The input must be connected to ground to generate a
low level.
Pin no. LCD_SEL3
LCD_SEL2
LCD_SEL1
LCD_SEL0
Display type
0
low
low
low
low
reserved
1
low
low
low
high
1280 x 1024 (SXGA), TFT, 2 x 18-bit, LVDS
channel 1 and 2
2
low
low
high
low
DVI LCD 640 x 480
3
low
low
high
high
DVI LCD 800 x 600
4
low
high
low
low
640 x 480 (VGA), TFT, 18 bits, LVDS channel 1
5
low
high
low
high
reserved
6
low
high
high
low
1024 x 768 (XGA), TFT, 18 bits, LVDS channel 1
7
low
high
high
high
800 x 600 (SVGA), TFT, 18 bits, LVDS channel 1
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
1024 x 768 (XGA), TFT, 2 x 18-bit, LVDS channel
1 and 2
13
high
high
low
high
DVI LCD 1024 x 768
14
high
high
high
low
DVI LCD 1280 x 1024
15
high
high
high
high
No LVDS display or DVI LCD with automatic
DDC ID
I/O front port for operator panels, X44
This port carries all signals required for connecting operator panels in addition to the display
interface. The maximum cable length is 50 cm at a USB data rate of 12 Mbps.
Pin no. Short description
Meaning
Input / Output
1
GND
Ground
-
2
P12V
Inverter voltage supply
Output
3
BL_ON
Backlight on (5 V = On)
Output
4
P5V_fused
+5 V (fused)
Output
5
GND
Ground
-
6
P3V3_fused
+3.3 V VCC (fused)
Output
