Rs485 Operation; Figure 2 - Rs485 Wiring - GridConnect NET485 Manual

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.
3.3V
2
3
Vcc
4
4
TX
1
CPU
3.3V
2
R13
6
CP0
10K
3
3.3V
4
5 1
RX
2
3 2
GND
J2 1
1
TXDA
TXDB
SGND

Figure 2 - RS485 Wiring

NET485 User Guide
3.3V
8
Vcc
DE
D
DI
6
R
7
RO
RE
GND
5
3.3V
8
Vcc
DE
D
DI
6
RXDA (Pin 5)
R
7
RO
RXDB (Pin 4)
RE
GND
5
RS485
Mode
RS485
Mode
TXDA (Pin 7)
TXDB (Pin 6)
SGND (Pin 3)
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