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RS232/RS485/RS422 interfaces
The RB900SG terminal is equipped with RS232/RS485/RS422 interfaces on RJ45
socket. Use the jumper to switch between interfaces. All available jumper positions are
presented in 7.1. Setting up the modem. The connector also carries the power supply from
the ITRON SL7000 or ACE6000 meter, therefore it is not necessary to use an external
power supply when connected to a meter.
Table of RJ45 serial connector:
1
RJ45
RS232
1
VCC
2
-
3
-
4
TX
5
RX
6
GND
7
DTR
8
-
RS422
RS485
VCC
VCC
TX-
DATA-
-
-
TX+
DATA+
RX+
DATA+
GND
GND
RX-
DATA-
-
-
11
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