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3
ensure the best communication status.
1.4 Data Line Connecting
Remove the industrial terminals on the DTU and loosen each hole with a
screwdriver. The definition of each wire port is shown in the previous section. As
show below, the three-wire terminal is the device power interface, and the four-
wire is the RS485 data interface.
2 Setting
Connecting the PC and DTU with USB to RS485 converter and a power supply
for the power.
Figure 3 wires