Detailed descriptions
16.2 Bus board
SIMATIC Rack PC 840 V2
Operating Instructions, Edition 05/2006, A5E00248055-04
16-15
16.2.3
Pin assignment of the bus board connectors
Pin assignment Auxiliary ATX
Pin No.
Abbreviation
Meaning
Input /Output
1, 2, 3
GND
Chassis ground
4, 5
+ 3.3 V
+ 3.3 V
6
+ 5 V
+ 5 V
FAN connector pinout
Pin No.
Abbreviation
Meaning
Input /Output
1
GND
Chassis ground
-
2
+ 12 V
Power supply
Output
3
NC
-
-
Note
For detailed information on the pin assignments of the interfaces, please contact Costumer
Support or the Repair Center.