User`s guide

COMMUNICATION
EATON Powerware
®
BladeUPSt (12 kVA) User’s Guide S 164201649 Rev 2 www.powerware.com
90
DB−9 Communication Port
To establish communication between the UPS and a computer, connect
your computer to the UPS communication port using the supplied
communication cable.
When the communication cable is installed, power management
software can exchange data with the UPS. The software polls the UPS
for detailed information on the status of the power environment. If a
power emergency occurs, the software initiates the saving of all data
and an orderly shutdown of the equipment.
The cable pins are identified in Figure 47 and the pin functions are
described in Table 5. See Figure 45 on page 87 for the communication
port location.
3
8
7
9
1
6
2
4
5
Figure 47. Communication Port
Table 5. Communication Port Pin Assignment
Pin Number Signal Name Function Direction from the UPS
2 TxD Transmit to external device Out
3 RxD Receive from external device In
5 GND Signal common (tied to chassis) 