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COMMUNICATION
Eaton
®
9130 UPS (700–3000 VA) User's Guide S 164201718 Rev 2 www.powerware.com
55
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 for the RS-232 communication port are identified in
Figure 19, and the pin functions are described in Table 4.
3
8
7
9
1
6
2
4
5
Figure 19. RS-232 Communication Port (DB-9 Connector)
Table 4. RS-232 Communication Port Pin Assignment
Pin Number Signal Name Function Direction from the UPS
1 DCD Battery Low signal
1,3
Out
2 RxD Transmit to external device Out
3 TxD Receive from external device
2
In
4 DTR PnP from external device (tied to Pin 6) In
5 GND Signal common (tied to chassis) —
6 DSR To external device (tied to Pin 4) Out
7 RTS No connection In
8 CTS On Battery signal
1,3
Out
9 RI +8-12 Vdc power Out
1
Configurable; see the “Relay Configuration” setting in “User Settings” on page 40.
2
If Pin 3 receives a Low (+V) signal for >5 seconds, the UPS executes the command selected by the “Signal Inputs”
setting in “User Settings” on page 40.
3
When the selected condition is active, output signals on Pins 1 and 8 shift from Low (positive voltage) to High
(negative voltage). When the condition no longer exists, the output signal returns to Low.