User guide

EMX-B75 User’s Manual
EMX-B75 User’s Manual 23
2.4.12 Serial port 4~9 connector (COM4~9)
Signal
PIN
PIN
Signal
DCD
1
2
RXD
TXD
3
4
RTD
GND
5
6
DSR
RTS
7
8
CTS
Normal
9
Note:
Serial Port Function
Serial Port number
RS 232 with 5V/12V
COM1, COM3~COM6
RS 232 without voltage
COM7, COM8, COM9
2.4.13 Serial port 2/10 connector (COM2/10)
PIN
Signal
1
RS485_TX-
2
RS485_TX+
3
RS422_RX-
4
RS422_RX+
Note:
Serial Port Function
Serial Port number
RS 422/485
COM2 , COM10
COM9
COM7
COM6
COM5
COM4
COM8
COM2
COM10
COM1_3