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6.10 RS485 Connection
RS485 full-duplex interface on RJ45 connector provides RX+, RX-, TX+, TX- signals without direction
control signal.
This communication port is intended to be connected to external meter through an additional cable
ended with proper type connector and signal distribution. Maximum length for this cable is 1.5m.
If RS485 cable required length is longer than 3m, it is recommended to use a shielded cable.
No hardware related configuration action is needed to enable RS485 port communication.
TERMINAL
RS485
DESCRIPTION
1
2
RS485_TX-
Output - WAN received data is RS485 transmitted on this
output, ‘-‘ signal.
3
4
R
Output - WAN received data is RS485 transmitted on this
output, ‘+‘ signal.
5
R
Input – RS485 data received on this Input is WAN transmitted,
‘+‘ signal.
6
7
RS485_RX-
Input – RS485 data received on this Input is WAN transmitted,
‘-‘ signal.
8
