ID3000 Series Smart Code Reader User Manual
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Figure 3-9 Output Signal Connecting to NPN Device
3.5 RS-232 Serial Port
The 9-pin male connector and 25-pin male connector are commonly used serial ports, as shown
below. You can refer to the table below for the specific pin name and function.
Figure 3-10 9-Pin Interface
Figure 3-11 25-Pin Interface
Table 3-3 Description
Serial Port Type
Pin No.
Name
Function
9-Pin Interface
2
RX
Receive data
3
TX
Send data
5
GND
Signal ground
25-Pin Interface
2
TX
Send data
3
RX
Receive data
7
GND
Signal ground
