8-9
PG 720 P Programming Device
C79000-G7076-C721-02
You can connect an external keyboard to your PG 720. The connector has the
following pinout:
View of the socket connector
Figure 8-3
Connector Pinout for an External Keyboard
PinNo.
Designation
Input/Output
1
Data line, keyboard
Input/output
2
Data line, trackball
Input/output
3
0V
–
4
Current-limited 5V power supply
Output
5
Clock line, keyboard
Input/output
6
Clock line, trackball
Input/output
Connecting an
External Keyboard
Hardware Information