Siemens SIMATIC PC 670 Equipment Manual page 158

Hardware Information
DC interface of the power supply 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
Short Name
P5V +5V
P5V +5V
P5V +5V
P5V +5V
P5V +5V
PS_NAU_N Power failure, early warning signal
PS_PWROK Power Good signal
GND Chassis ground
GND Chassis ground
GND Chassis ground
N12V –12V
GND Chassis ground
GND Chassis ground
GND Chassis ground
P12V +12V
P12V +12V
P3V +3.3V
P3V +3.3V
P3V +3.3V
P3V +3.3V
Meaning
Panel PC 670 Computing Unit, Equipment Manual
Release 04/02