Siemens Simatic 620 - Manual (Page 162)

Hardware Information
7-30
SIMATIC Box PC 620 Manual
A5E00131465-01
PS Connection for Hard Disk
The power supply of the 3.5” hard disk is effected via this connection.
Pin No. Designation Description Input / Output
1 P12V +12 V Output
2 GND Ground –
3 GND Ground –
4 P5V + 5V Output
Connection for CPU Fan
The CPU fan is connected via this connection.
Pin No. Designation Description Input / Output
1 GND Ground –
2 +12V Switched power supply Output
3 CPU FAN_CLK Speed signal Input
Connection for Device Fan
The device fan is connected via this connection.
Pin No. Designation Description Input / Output
1 +12V Switched power supply Output
2 GND Ground –
Connection for Backup Battery
The battery for the standby supply to the CMOS RAM is connected to this
connection. A 3.6 V lithium battery with a capacity of 750 mAh is used.
Pin No. Designation Description Input / Output
1 + Positive pole Input
2 – Negative pole –