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Shenchen Pump LabV Series
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RXD
TXD
GND
. RS485 Communication Interface:
Choose RS485 in the communication
setting interface, this terminal is active
.
GD1:
RS485 signal interface
A+:
Connect RS485 A+ terminal
B-:
Connect RS485 B- terminal
Instruction:
No matter choose RS232 or RS485, the communication protocol is
standard MODBUS protocol.