IEI Integration NANO-PV-D4252_N4552_D5252 - Manual (Page 64)

NANO-PV-D4252/N4552/D5252 EPIC SBC
Page 50
Figure 4-6: COM 3 RS-422/485 Function Select Jumper Location
4.5.6 COM 3 RS-422/485 Termination Select Jumpers
Jumper Label: J9 and J10
Jumper Type: 2-pin header
Jumper Settings: See Table 4-5 and Table 4-7
Jumper Location: See Figure 4-7
The COM 3 RS-422 and RS-485 Termination Select jumpers enable or disable the
termination used by the serial COM 3 communications port as 120 ohm. The COM 3
RS-422 and RS-485 Termination Select settings are shown in Table 4-5 and Table 4-7.
RS-422 (J9) Setting Description
Short 120 ohm termination Resistance
Open NC (Default)
Table 4-7: COM 3 RS-422 Termination Select Jumper Settings
RS-485 (J10) Setting Description
Short 120 ohm termination Resistance
Open NC (Default)
Table 4-8: COM 3 RS-485 Termination Select Jumper Settings