1 com3 rs-422 and rs-485 pinouts – IEI Integration AFL-xxA-N270-Series v2.20 User Manual
Page 52
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AFL-xxA-N270 Series Panel PC
Page 38
The COM1 and COM3 Pin 9 Setting jumper locations are shown in Figure 4-8 below.
Figure 4-8: COM1 and COM3 Pin 9 Setting Jumper Locations
4.9.4.1 COM3 RS-422 and RS-485 Pinouts
The pinouts for RS-422 and RS-485 operation of external serial port COM 3 are detailed
below.
COM 3
RS-422 Description
Pin 1
TX-
Pin 2
TX+
Pin 6
RX-
Pin 7
RX+
Table 4-6: RS-422 Pinouts
COM 3
RS-485 Description
Pin 1
Data-
Pin 2
Data+
Table 4-7: RS-485 Pinouts
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