IEI Integration AFL-W19A_W19B_17D_W15A-N270 v2.20 - Manual (Page 35)

AFL-W19A/W19B/17D/W15A-N270 Panel PC
Page 24
Figure 2-11: COM3 RX Function Select Jumper Location
2.5.7 COM3 TX Function Select Jumper
Jumper Label: JP11
Jumper Type: 6-pin header
Jumper Settings: See Table 2-9
Jumper Location: See Figure 2-12
The COM3 TX Function Select jumper configures the TX pin on COM3 serial port
connector as RS-422 as an RS-485. The COM3 TX Function Select jumper selection
options are shown in Table 2-9.
COM3 TX Function Select Description
Short 1 – 3 RS-422
Short 2 – 4 RS-422
Short 3 – 5 RS-485
Short 4 – 6 RS-485
Table 2-9: COM3 TX Function Select Jumper Settings
The COM3 TX Function Select jumper location is shown in Figure 2-12 below.