IEI Integration AFL-xxA-N270-Series v2.30 - Manual (Page 55)

AFL-xxA-N270 Series Panel PC
Page 39
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
7
Table 4-9 .
COM3 TX Function Select Description
Short 1 – 3 RS-422 TX-
Short 2 – 4 RS-422 TX+
Short 3 – 5 RS-485 D-
Short 4 – 6 RS-485 D+
Table 4-9: COM3 TX Function Select Jumper Settings
The COM3 TX Function Select jumper location is shown in
7
Figure 4-10 below.
Figure 4-10: COM3 TX Function Select Jumper Pinout Locations
4.9.7 COM3 RS-232/422/485 Serial Port Select Jumper
Jumper Label: JP6
Jumper Type: 12-pin header (four 3-pin headers combined)
Jumper Settings: See
7
Table 4-10
Jumper Location: See
7
Figure 4-11