IEI Integration AFL-08B-N270 v2.30 - Manual (Page 37)

AFL-08B-N270 User Manual
Page 37
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
5
Table 2-9 .
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 2-9: COM3 TX Function Select Jumper Settings
The COM3 TX Function Select jumper location is shown in
5
Figure 2-8 below.
Figure 2-8: COM3 TX Function Select Jumper Pinout Locations
2.5.7 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
5
Table 2-10
Jumper Location: See
5
Figure 2-9
The COM3 RS-232/422/485 Serial Port Select jumper sets the communication protocol
used by the second serial communications port (COM3) as RS-232, RS-422 or RS-485.
The COM3 RS-232/422/485 Serial Port Select settings are shown in
5
Table 2-10 .