GridConnect NET485 - RS485 Operation; Figure 2 - RS485 Wiring

Overview
NET485 User Guide 1-5
1.2.3 RS485 Operation
For RS485 mode, the TXDA signal is connected to the RXDA terminal, and the TXDB signal is connected
to the RXDB terminal. The three signals are TXDA, RXDB, and signal ground.
D
R
Vcc
3.3V
DE
DI
RO
RE
GND
8
3
4
1
2
5
7
6
6
D
R
Vcc
3.3V
DE
DI
RO
RE
GND
8
3
4
1
2
5
7
6
3.3V
CP0
TX
4
RX
5
Vcc
3.3V
2
GND
1
3.3V
RS485
Mode
TXDA (Pin 7)
RS485
Mode
TXDB (Pin 6)
RXDA (Pin 5)
RXDB (Pin 4)
SGND (Pin 3)
2
1
3
R13
10K
J2
CPU
TXDA
TXDB
SGND
Figure 2 - RS485 Wiring