62 Eaton 9155 UPS (8–15 kVA) User’s Guide 164201553—Rev H0
66..22 CCoommmmuunniiccaattiioonn OOppttiioonnss
The Eaton 9155 has serial communication capabilities through the DB-9 communication port or through an X-
Slot card in one of the available bays. In addition, the power management software can be installed and used to
communicate with the UPS via one of the serial communication connections.
The UPS supports two serial communication devices according to the following table:
Independent
Multiplexed
X-Slot 1 X-Slot 2 DB-9 Communication Port
Any X-Slot card
Any X-Slot card except the Eaton Modem Card
Not in use
Any X-Slot card Eaton Relay Interface Card
Powerware Hot Sync
®
CAN Bridge Card
Available
Any X-Slot card
Not in use
Available
NOTE You can configure relays, signal inputs, and the serial port baud rate through the front
panel menus (see Table 10).
66..22..11 DDBB--99 CCoommmmuunniiccaattiioonn PPoorrtt
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 48 and the pin functions are described in Table 7. See Figure 43 for the
communication port location.
Figure 48. Communication Port
Table 7. 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)
—
Communication
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