8
NVA100X - Getting started - 01 - 2018
When used the local port takes priority over the Ethernet port.
—
RS485 port
RS485 communication circuit connections must be made using screened twisted pair cable observing
the polarities; screening must only be connected to a single end.
It is recommended to terminate the line at the extremities of the same; this must be performed on the
RS485 line control unit and on the ProNext device placed at the furthest point
serial1-sch.ai
Connector RJ45
RS485
120
Ω
120
Ω
SUPERVISION UNIT
A+
B-
X5
X6
NVA100X
U
AUX
≅
ETH-1
ETH-2
ETHERNET
1 - DTR
2 - GND
3 - RX
4 - TX
RS232
RS485
A+
B-
X5
X6
NVA100X
U
AUX
≅
ETH-1
ETH-2
ETHERNET
1 - DTR
2 - GND
3 - RX
4 - TX
RS232
RS485
A+
B-
4
6
5
2
1
3
x
NETWORK
3V3
FX
TX
LINK2
LINK1
RS485
B-
A+
