Rs232/422/485 Com Port Box Header: Jcom1, Jcom2 - MSI MS-98K9 User Manual

Hardware Setup

RS232/422/485 COM Port Box Header: JCOM1, JCOM2

This connector is a 16550A high speed communications port that sends/receives
16 bytes FIFOs. You can attach a serial device to it.
JCOM1~JCOM2
h
PIN
1
2
3
4
5
6
7
8
9
PIN
1
2
3
4
5
6
7
8
9
PIN
1
2
3
4
5
6
7
8
9
2-16
RS232
SIGNAL DESCRIPTION
DCD Data Carrier Detect
RXD Receive Data
TXD Transmit Data
DTR Data Terminal Ready
GND Ground
DSR Data Set Ready
RTS Request To Send
CTS Clear To Send
POWER/RI 5V or 12V selected by Jumper / Ring Indicator
RS422
SIGNAL DESCRIPTION
TXD- Transmit Data, Negative
TXD+ Transmit Data, Positive
RXD+ Receive Data, Positive
RXD- Receive Data, Negative
GND Ground
NC No Connection
NC No Connection
NC No Connection
NC No Connection
RS485
SIGNAL DESCRIPTION
D- Data, Negative
D+ Data, Positive
NC No Connection
NC No Connection
GND Ground
NC
No Connection
NC No Connection
NC No Connection
NC No Connection