COMMELL ME-C79 - Manual (Page 27)

ME-C79 User’s Manual
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Connector: COM3/4, 5/6
Type: 20-pin(2 x 10)header pitch = 2.54 x 1.27mm
Pin Description Pin Description
1 DCD1 2 RXD1
3 TXD1 4 DTR1
5 GND1 6 DSR1
7 RTS1 8 CTS1
9 RI1 10 N/C
11 DCD2 12 RXD2
13 TXD2 14 DTR2
15 GND2 16 DSR2
17 RTS2 18 CTS2
19 RI2 20 N/C
Jumper: JCSEL1,JCSEL2
Type: 12-pin (6 x 2) & 8-pin (4 x 2) for set COM2 mode jumper
RS232 RS485 RS422 IrDA
JCSEL1
JCSEL2
Default: RS232
Jumper: JP1/JP2/JP3/JP4 (COM1/2/3/4)
Type: onboard 6-pin header
Power Mode JP1/2
Pin 9 with 5V Power 1-2
Pin 9 with 12V Power 3-4
Standard COM port 5-6
Default setting (5-6)