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