Siemens Simatic 620 User Manual
Page 158
Hardware Information
7-26
SIMATIC Box PC 620 Manual
A5E00131465-01
DC Port of the Power Supply Unit 105W
The power supply unit has a connector (X2) through which all the signals on the
DC side are connected with the motherboard.
Pin no.
Designation
Description
1
P5V
+5V
2
P5V
+5V
3
P5V
+5V
4
P5V
+5V
5
P5V
+5V
6
PS_NAU_N
Power failure early warning alarm
7
PS_PWROK
Power Good Signal
8
GND
Ground
9
GND
Ground
10
GND
Ground
11
N12V
–12V
12
GND
Ground
13
GND
Ground
14
GND
Ground
15
P12V
+12V
16
P12V
+12V
17
P3V
+3.3V
18
P3V
+3.3V
19
P3V
+3.3V
20
P3V
+3.3V