Lanner LEC-7000 - Manual (Page 15)

LEC-7000 Fanless Embedded System User’s Manual
16
COM1 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-
4
Data Terminal
Ready (DTRA #)
RX+
5 Ground (GND)
6
Data Set Ready
(DSRA #)
7
Request To Send
(RTSA #)
8
Clear To Send
(CTSA #)
9
Ring
Indicator(RIA#)
10 KEY
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 2-4,3-5,6-8,9-11
RS-485 5-6 2-4,3-5,6-8,9-11
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:
1 5
9 6
COM1