IEI Integration AFL-W19A_17D_W15A-N270 v3.00 - Manual (Page 33)

AFL-W19A/17D/W15A-N270 Panel PC
Page 22
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.
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.