Siemens SIMATIC Box PC 620 Manual page 165

DC Port of the Power Supply Units
The power supply unit has a connector (X2) through which all the signals on the
DC side are connected with the motherboard.
Pin Row A
No.
1 PwrGood
2 TTY_VCC
3 TTY_GND
4 NAU_N
5 GND
6 P12V
7 V_DC
8 N12V
9 GND
10 GND
11 P3V3
12 P3V3
13 GND
14 GND
15 GND
16 GND
17 P5V
18 P5V
19 P5V
20 P5V
SIMATIC Box PC 620 Manual
C79000-G7076-C639-04
Meaning
Power Good Signal
Potential–free VCC (15V ±
3V) for TTY port
TTY_GND
Power failure early warning
alarm
GND
+12V
for processor module
-12V
GND
GND
+3.3V
+3.3V
GND
GND
GND
GND
+5V
+5V
+5V
+5V
Hardware Information
Pin Row B
No.
1 PwrGood
Potential–free VCC (15V ±
2 TTY_VCC
3 TTY_GND
4 NAU_N Power failure early warning
5 GND
6 P12V
7 V_DC
8 N12V
9 GND
10 GND
11 P3V3
12 P3V3
13 GND
14 GND
15 GND
16 GND
17 P5V
18 P5V
19 P5V
20 P5V
Meaning
Power Good Signal
3V) for TTY port
TTY_GND
alarm
GND
+12V
for processor module
-12V
GND
GND
+3.3V
+3.3V
GND
GND
GND
GND
+5V
+5V
+5V
+5V
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