Siemens SIMATIC PANEL PC 877 - Page 201

Detailed descriptions
17.1 Motherboard
SIMATIC Panel PC 877
Operating instructions, Release 07/2006, A5E00877780-01
17-9
PS/2 mouse interface, X22
Pin assignment of the interface:
PS/2 Pin No. Abbreviation Meaning Input/Output
1 DAT Data channel, mouse Input/output
2 – Not assigned –
3 GND Ground –
4 P5VFK + 5 V (fused) Output
5 CLK Clock channel,
mouse
Input/output
6 – Not assigned –
PS/2 keyboard interface, X23
Pin assignment of the interface:
PS/2 Pin No. Abbreviation Meaning Input/Output
1 DAT Data channel, keyboard Input/output
2 – Not assigned –
3 GND Ground –
4 P5VFK + 5 V (fused) Output
5 CLK Clock channel,
keyboard
Input/output
6 – Not assigned –
USB interfaces, X36
The Universal Serial Bus interfaces have the following pinout:
USB interface
Pin No. Abbreviation Meaning Input/Output
1 VCC + 5 V (fused) Output
2 – Data Data channel Input/Output
3 + Data Data channel Input/Output
4 GND Ground –
The connectors are of type A.
The interface is rated as a high current USB (500mA).