Siemens Simatic 620 Owner's Manual page 158

Hardware Information
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.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
7-26
Designation
P5V +5V
P5V +5V
P5V +5V
P5V +5V
P5V +5V
PS_NAU_N Power failure early warning alarm
PS_PWROK Power Good Signal
GND Ground
GND Ground
GND Ground
N12V –12V
GND Ground
GND Ground
GND Ground
P12V +12V
P12V +12V
P3V +3.3V
P3V +3.3V
P3V +3.3V
P3V +3.3V
Description
SIMATIC Box PC 620 Manual
A5E00131465-01