IEI Integration ECW-281B-N270-WT v2.10 - Manual (Page 56)

ECW-281B-R21/N270 Embedded System
Page 40
3.5.3 COM 2 Function Select Jumper (ECW-281B-R21 Series Only)
Jumper Label: JP1
Jumper Type: 8-pin header
Jumper Settings: See
744H744H746H
Table 3-22
Jumper Location: See
745H745H747H
Figure 3-21
The COM 2 Function Select jumper sets the communication protocol used by the second
serial communications port (COM 2) as RS-232, RS-422 or RS-485. The COM 2 Function
Select settings are shown in
746H746H748H
Table 3-22 .
COM 2 Function Select Description
Short 1-2 RS-232 Default
Short 3-4 RS-422
Short 5-6 RS-485
Short 5-6
Short 7-8
RS-485 with RTS control
Table 3-22: COM 2 Function Select Jumper Settings
The COM 2 Function Select jumper location is shown in
747H747H749H
Figure 3-21 .
Figure 3-21: COM 2 Function Select Jumper Location