ELECTRICAL CONNECTIONS
5
RS485 Full-Duplex Interface
The following pins are used for RS485 Full-duplex interface connections:
Pinout
Function
TX+
RS485 Transmit Data +
RX+
RS485 Receive Data +
TX-
RS485 Transmit Data -
RX-
RS485 Receive Data -
SGND Signal
Ground
SGND RX485+ RX485-
TX485+ TX485-
USER INTERFACE
SGND TX+ TX-
RX+
RX-
SC4000
Figure 22 - RS485 Full-duplex Connections
NOTE
For applications that do not use RX485 signals, do not leave these lines
floating but connect them to SGND as shown below.
SGND RX485+ RX485-
USER INTERFACE
SGND TX+ TX-
SC4000
Figure 23 - RS485 Full-duplex Connections using Only TX Signals
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