COMMUNICATION
EATON
Powerware
®
BladeUPS
®
(12 kVA) User's Guide
S
164201649 Rev 3
www.powerware.com
92
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 49 and the pin functions are
described in Table 6. See Figure 47 on page 89 for the communication
port location.
3
8
7
9
1
6
2
4
5
Figure 49. Communication Port
Table 6. 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)
—