Db-9 Communication Ports - Eaton Powerware 9140 User Manual

COMMUNICATION

DB-9 Communication Ports

The Powerware 9140 provides two DB-9 ports on the UPS rear panel.
The service port is not intended for customer use and does not support
standard communication protocols. The RS-232 port is available for UPS
monitoring, control, and flash upgrades.
To establish communication between the UPS and a computer, connect
your computer to the RS-232 UPS communication port using the
supplied serial communication cable (see Figure 38 on page 69).
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 39 and the pin functions are
described in Table 6.
Table 6. Communication Port Pin Assignment
Pin Number Signal Name
1 Low Batt
2 TxD
3 RxD
4 DTR
5 GND
6 DSR
7 —
8 AC Fail
9 Power Source
72
EATON Powerware
Figure 39. Communication Port
Function
Low Battery relay contact; 20 mA, 30 Vdc contact rating
Transmit to external device
Receive from external device
PnP (Plug and Play) from external device (tied to Pin 6)
Signal common (tied to chassis)
To external device (tied to Pin 4)
No Connection
AC Fail relay contact; 20 mA, 30 Vdc contact rating
+V (8 to 24 volts DC power)
®
9140 UPS (7.5–10 kVA) User's Guide
6 7 8 9
1 2 3 4 5
Direction from the UPS
Out
Out
In
In
—
Out
—
Out
Out
S
164201622 Rev A FINAL DRAFT 14-Jul-2006