HP R3000v UPS User Manual

COMMUNICATION
HP R3000v UPS User Guide S 164201731 Rev 1
22
ThecablepinsfortheRS-232communicationport are identified in Figure 16 and the pin
functions are described in Table 2.
3
8
7
9
1
6
2
4
5
Figure 16 RS-232 Communication Port (DB-9 Connector)
Table 2 RS-232 Communication Port Pin Assignment
Pin Number Signal Name Function Direction from the UPS
1 DCD Not used —
2 RxD Transmit to external device Out
3 TxD Receive from external device In
4 DTR Not used —
5 GND Signal common (tied to chassis) —
6 DSR Not used —
7 RTS Not used —
8 CTS Not used —
9 RI Not used —