IEI Integration AFL-xxA-N270-Series v2.30 - Manual (Page 53)

AFL-xxA-N270 Series Panel PC
Page 37
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
4.9.5 COM3 RX Function Select Jumper
Jumper Label: JP9
Jumper Type: 8-pin header
Jumper Settings: See
7
Table 4-8
Jumper Location: See
7
Figure 4-9