Eaton POWERWARE 9315 - Manual (Page 88)

COMMUNICATION
EATON Powerware ® 9315 UPS (500–750 kVA) Installation and Operation Manual S 164201691 Rev 1 www.powerware.com 12-2
13
12
10
11
9
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
RS-232 DTR
NOT USED
–12V
NOT USED
NOT USED
NOT USED
23
21
19
17
15
1
5
4
3
2
GND
RS-232 TXD
RS-232 RXD
RS-232 RTS
RS-232 CTS
6
8
7
RS-232 DSR
RTN
+12V
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
24
22
25
20
18
16
14
Figure 12-2. Port 2 (DB-25)
Table 12-2. Pin Assignments for Port 2 (DB-25)
Pin Number Symbol Function Comments
1 GND Chassis Ground
2 TXD Transmit Data Input to UPS
3 RXD Receive Data Output from UPS
4 RTS Request to Send Input to UPS
5 CTS Clear to Send Output from UPS
6 DSR Data Set Ready Output from UPS
7 RTN Return
8 +12V +12 Volts Output from UPS - always true
20 DTR Data Terminal Ready Input to UPS - typically not used by UPS
22 –12V –12 Volts Output from UPS - always true
NOTE Pins 5 and 6 are tied together internally.