Eaton Electrical 9130 manual Pin Number Signal Name Function Direction from the UPS, Gnd

COMMUNICATION

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.

9

8

7

6

5

4

3

2

1

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 signal1,3	Out
2	RxD	Transmit to external device	Out
3	TxD	Receive from external device2	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 signal1,3	Out
9	RI	+8-12 Vdc power	Out

1Configurable; see the “Relay Configuration” setting in “User Settings” on page 40.

2If 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.

Eaton® 9130 UPS (700–3000 VA) User's Guide S 164201718 Rev 2 www.powerware.com 55