IEI Integration NANO-PV-D4251_N4551_D5251 - Manual (Page 61)

NANO-PV-D4251/N4551/D5251 EPIC SBC
Page 48
The location of the clear CMOS jumper is shown in
6
Figure 4-4 below.
Figure 4-4: Clear CMOS Jumper
4.5.4 COM 3 Function Select Jumper
Jumper Label: J4
Jumper Type: 6-pin header
Jumper Settings: See Table 4-5
Jumper Location: See Figure 4-5
The COM 3 Function Select jumper sets the communication protocol used by the second
serial communications port (COM 3) as RS-232, RS-422 or RS-485. The COM 3 Function
Select settings are shown below.
Setting Description
1-2 RS-232
3-4 RS-422
5-6 RS-485
Table 4-5: COM 3 Function Select Jumper Settings
Figure 4-5: COM 3 Function Select Jumper Location