IEI Integration AFL-19i-HM55 v1.01 - Manual (Page 45)

AFL-HM55 Series Panel PC
Page 33
Pin 2 TX+
Pin 6 RX-
Pin 7 RX+
Table 3-8: RS-422 Pinouts
COM 3 RS-485 Description
Pin 1 Data-
Pin 2 Data+
Table 3-9: RS-485 Pinouts
3.9.7 COM3 RS Function Select Jumper
Jumper Label: JP11
Jumper Type: 8-pin header
Jumper Settings: See Table 3-10
Jumper Location: See Figure 3-11
The COM3 RX Function Select jumper sets the communication protocol used by the RX
serial communications port COM3 as RS-232, RS-422 or RS-485. The COM3 RX
Function Select jumper settings are shown in Table 3-10.
COM3 RX Function Select Description
Short 1-2 DET BIOS RS232/422/485
Short 3-4 RS-232
Short 5-6 RS-422
Short 7-8 RS-485
Table 3-10: COM3 RX Function Select Jumper Settings
The COM3 RX Function Select jumper location is shown in Figure 3-11.