Rs232/422/485 Com Port Box Header: Jcom2 - MSI MS-98L2 Manual

RS232/422/485 COM Port Box Header: JCOM2

This connector is a 16550A high speed communications port that sends/receives
16 bytes FIFOs. You can attach a serial device to it.
RS232
PIN SIGNAL DESCRIPTION
1 DCD Data Carrier Detect
2 RXD Receive Data
3 TXD Transmit Data
4 DTR Data Terminal Ready
5 GND Signal Ground
6 DSR Data Set Ready
7 RTS Request To Send
8 CTS Clear To Send
9 VCC_COM Voltage select setting by
COM jumper
RS485
PIN SIGNAL DESCRIPTION
1 485 TXD- Transmit Data, Negative
2 485 TXD+ Transmit Data, Positive
3 NC No Connection
4 NC No Connection
5
GND Signal Ground
6 NC No Connection
7 NC No Connection
8 NC No Connection
9 NC No Connection
RS422
PIN SIGNAL DESCRIPTION
1 422 TXD- Transmit Data, Negative
2 422 RXD+ Receive Data, Positive
3 422 TXD+ Transmit Data, Positive
4 422 RXD- Receive Data, Negative
5 GND Signal Ground
6 NC No Connection
7 NC No Connection
8 NC
No Connection
9 NC No Connection
MS-98L2
2-15