User's Manual

6
Figure 2-3 InDTU332N wiring
Table 2-1 Interface terminal description
Pin
Function
Remarks
GND
Digital ground
Provide serial port grounding.
TXD/485-
RS232 sending or RS485-
RS232 or RS485 depends by device
RXD/485+
RS232 receiving or RS485+
RXD2
RS232 data receiving
TXD2
RS232 data Transmiting
GND
Digital ground
Provide serial port grounding.
V-
Power Negative
Support 5 V DC to 35 V DC input, with
ripple wave lower than 100 mV.
V+
Power Positive
The interface terminal of InDTU332N is shown as below:
Figure 2-4 InDTU332N interface