Siemens SIMATIC IPC647D Operating Instructions Manual page 140

Technical specifications
8.5 Hardware description
PS/2 keyboard interface, X21 1 to 6
Pin no.
1
2
3
4
5
6
USB 2.0 ports, X4A, B; X561
Pinno.
1
2
3
4
The connectors are of type A.
The ports are rated as high-current USB 2.0 (500 mA).
140
Short name
DAT
–
GND
P5VFK
CLK
–
Short name Meaning
VCC + 5 V (fused)
– Data Data channel
+ Data Data channel
GND Ground
Meaning
Data channel, keyboard
Not used
Ground
+ 5 V (fused)
Clock channel, keyboard
Not used
Operating Instructions, 01/2014, A5E32996306-AA
Input /output
Input/output
–
–
Output
Input/output
–
Input / output
Output
Input / output
Input / output
–
SIMATIC IPC647D