
WIRING THE MODBUS CARD
EATON Powerware
®
Modbus
®
Card User’s Guide S 164201376 Rev C www.powerware.com
12
RS-232 Modbus Port
It is also possible to use the RS-232 Modbus port for connecting to your
network.
3
8
7
9
1
6
245
Figure 11. RS-232 DB-9 Pin Numbers
Table 3. RS-232 DB-9 Pin Assignments
Pin Number Function Direction from the Modbus Card
1 No connection —
2 RS-232 transmit data Out
3 RS-232 receive data In
4 No connection —
5 Signal common —
6 No connection —
7 No connection —
8 No connection —
9 No connection —
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