Siemens SIMATIC PC 670 Equipment Manual page 146

Hardware Information
PS/2 mouse interface
It is possible to connect a PS/2 mouse to the computing unit. The port is assigned
as follows:
Figure 7-4
Pin Short Name
No.
1 DAT
2 -
3 GND
4 P5VFK
5 CLK
6 -
PS/2 trackball keyboard interface
It is possible to connect an external keyboard to the computing unit. The port is
assigned as follows:
7-14
6
4
2
View of Socket
Connector Pinout for a PS/2 Mouse
Meaning
Mouse data line
Not assigned
Chassis ground
+5V (fused)
Clock line, mouse
Not assigned
5
3
1
Input/Output
Input/Output
-
-
Output
Input/Output
-
Panel PC 670 Computing Unit, Equipment Manual
Release 04/02