Eaton 9910 - RS-232 Port

COMMUNICATION FEATURES
Eaton 9910 UPS and EBM User's Guide S P-164000005 Rev 2
39
RS-232 Port
To establish communication between the UPS and a computer, connect
one end of the serial communication cable that comes with the UPS to
the RS-232 port on the UPS. Connect the other end of the serial cable to
the RS-232 port on a computer.
Figure 6 identifies the cable pins and Table 7 describes the pin functions.
3
8
7
9
1
6
2
4
5
Figure 6. RS-232 Port
Table 7. RS-232 Port Pin Assignment
Pin Number Signal Name Function Direction from the UPS
1 Unused Not applicable
2 Tx Transmit to external device Out
3 Rx Receive from external device In
4 Unused Not applicable
5 GND Signal common (tied to chassis) Not applicable
6 Unused Not applicable
7 Unused Not applicable
8 Unused Not applicable
9 Unused Not applicable
NOTE Unused pins must remain free on all models.