IEI Integration AFL-xxA-N270-Series v1.03 - Manual (Page 57)

AFL-xxA-N270 Series Panel PC
Page 41
4.9.6 COM3 TX Function Select Jumper
Jumper Label: JP11
Jumper Type: 6-pin header
Jumper Settings: See Table 4-9
Jumper Location: See Figure 4-10
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 4-9.
COM3 TX Function Select Description
Short 1 – 3 RS-422 Default
Short 2 – 4 RS-422 Default
Short 3 – 5 RS-485
Short 4 – 6 RS-485
Table 4-9: COM3 TX Function Select Jumper Settings
The COM3 TX Function Select jumper location is shown in Figure 4-10 below.
Figure 4-10: COM3 TX Function Select Jumper Pinout Locations