COMMELL LE-37E - Manual (Page 17)

LE-37E
User’s Manual
-16-
COM3/4,5/6: RS232 20-pin header (Pitch 1.27mm x 2.54mm)
Pin Signal Pin Signal
1 DCD1 2 RXD1
3 TXD1 4 DTR1
5 GND 6 DSR1
7 RTS1 8 CTS1
9 RI1 10 NC
11 DCD2 12 RXD2
13 TXD2 14 DTR2
15 GND 16 DSR2
17 RTS2 18 CTS2
19 RI2 20 Key
JP1, JP2: COM1, COM2 pin-9 setting
Jumper settings Function
1-2 5V
3-4 12V
5-6 RI (Default)
Effective patterns of connection: 1-2 / 3-4 / 5-6
Other may cause damage
JCSEL1, JCSEL2: For configure COM2 communication mode
Function JCSEL1 JCSEL2
RS232
RS485
RS422
1
12
1
12
1
12
6
1
5
1
5
1
2
11
2
11
2
11
2
2
2
5
6
6