IEI Integration AFL-W19A_W19B_17D_W15A-N270 v2.20 - Manual (Page 34)

AFL-W19A/W19B/17D/W15A-N270 Panel PC
Page 23
Figure 2-10: COM1 and COM3 Pin 9 Setting Jumper Locations
2.5.6 COM3 RX Function Select Jumper
Jumper Label: JP8
Jumper Type: 8-pin header
Jumper Settings: See Table 2-8
Jumper Location:
See Figure 2-11
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 2-8.
COM3 RX Function Select Description
Short 3-4 RS-232
Short 1-2, 5-6 RS-422
Short 1-2, 7-8 RS-485
Table 2-8: COM3 RX Function Select Jumper Settings
The COM3 RX Function Select jumper location is shown in Figure 2-11.