Lanner LEC-2050 - Manual (Page 16)

LEC-2050 Fanless Embedded System User’s Manual
16
SC2T1/SC2T2: Select COM1 Type Jumper
COM1 TYPE SC2T2 SC2T1
RS-232 (Default) 1-2 1-2,5-6,7-8,11-12
RS-422 3-4 2-4,3-5,8-10,9-11
RS-485 5-6 2-4,3-5,8-10,9-11
PCOM1: COM1 Pin 9 Function Jumper
The Ring Indicator (pin 9) of RS-232 port of COM1 can be altered to provide
different functions as the following:
PIN NO. DESCRIPTION
1-2 +5V
3-4 +12V
5-6 RI
COM2 Pin Definition:
Serial Port Type
PIN NO.
RS-232 RS-485 RS-422
1
Data Carrier
Detect (DCDA #)
TXRX- TX-
2
Receive Data
(RXDA)
TXRX+ TX+
3
Transmit Data
(TXDA)
RX-
1 5
9 6
COM2