HP R1500 HP UPS R1500 G2 User Guide - Page 39

number, Signal, Function, Direction from the UPS, PnP from external device tied to Pin 6

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Page 39 highlights

Pin number 1 2 3 4 5 6 7 8 9 Signal name Low batt TxD RxD DTR GND DSR - AC fail - Function Low battery relay contact; 20 mA, 30 Vdc contact rating Transmit to external device Receive from external device PnP 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 No connection Direction from the UPS Out Out In In - Out - Out - Specifications 39

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Specifications 39
Pin
number
Signal
name
Function
Direction from the UPS
1
Low batt
Low battery relay contact; 20 mA, 30 Vdc
contact rating
Out
2
TxD
Transmit to external device
Out
3
RxD
Receive from external device
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
—
No connection
—
8
AC fail
AC fail relay contact; 20 mA, 30 Vdc contact
rating
Out
9
—
No connection
—