Siemens SIMATIC Rack PC 840 - Page 121

Hardware Information
7-13
SIMATIC Rack PC 840 Manual
A5E00104826-03
PS/2 Mouse Port, X22
You can connect an external PS/2 mouse to your Rack PC.
The connector has the following pinout:
12
3
4
5
6
View of socket connector
Figure 7-4 Connector Pinout for a PS/2 Mouse
Pin No. Designation Description Input / Output
1 DAT Data line, mouse Input / Output
2 Unassigned -
3 GND Ground -
4 +5V (fused) Output
5 CLK Clock line, mouse Input / Output
6 - Unassigned -
PS/2 Keyboard with Trackball Port, X23
You can connect an external keyboard to your Rack PC.
The connector has the following pinout:
12
3
4
5
6
View onto the socket
Figure 7-5 Connector Pinout for an External Keyboard Connecting Cable
Pin-No.
Designation Description Input / Output
1 DAT Data line, keyboard Input/output
2 Unassigned -
3 GND Ground -
4 P5VFK +5V ( fused) Output
5 CLK Clock line, keyboard Input/output
6 - Unassigned -