IEI Integration IBX-530B-N270 - Manual (Page 37)

IBX-530B-270 Embedded System
Page 25
3.5.6 COM3 RX Function Select Jumper
Jumper Label: JP9
Jumper Type: 8-pin header
Jumper Settings: See Table 3-9
Jumper Location: See Figure 3-6
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 3-9.
COM3 RX Function Select Description
Short 3-4 RS-232 Default
Short 1-2, 5-6 RS-422
Short 1-2, 7-8 RS-485
Table 3-9: COM3 RX Function Select Jumper Settings
The COM3 RX Function Select jumper location is shown in Figure 3-6.
Figure 3-6: COM3 RX Function Select Jumper Location