Powerware 9315 UPS Operation Manual page 51

Table 7-2. Pin Assignments for Port 2 (DB-25)
9315 UPS (200–300 kVA) Operation Manual S 164201036 Rev G www.powerware.com
EATON Powerware
®
Pin Number Symbol
1 GND
2 TXD
3 RXD
4 RTS
5 CTS
6 DSR
7 RTN
8 +12V
20 DTR
22 –12V
Pins 5 and 6 are tied together internally.
NOTE
Function Comments
Chassis Ground
Transmit Data Input to UPS
Receive Data Output from UPS
Request to Send Input to UPS
Clear to Send Output from UPS
Data Set Ready Output from UPS
Return
+12 Volts Output from UPS - always true
Data Terminal Ready Input to UPS - typically not used by UPS
–12 Volts Output from UPS - always true
Communication
7−5