Com3 serial port, Com4 serial port – NEXCOM NISE 104 User Manual
Page 27
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Copyright © 2012 NEXCOM International Co., Ltd. All Rights Reserved.
13
NISE 104 User Manual
Chapter 2: Jumpers and Connectors
COM3 Serial Port
Connector type: DB-9 port
Connector location: COM3
RS232
RS485
RS422
Pin
Definition
Pin
Definition
Pin
Definition
1
SP3_DCD
1
SP3_DATA-
1
SP3_TX-
2
SP3_RXD
2
SP3_DATA+
2
SP3_TX+
3
SP3_TXD
3
NC
3
SP3_RX+
4
SP3_DTR
4
NC
4
SP3_RX-
5
GND
5
GND
5
GND
6
SP3_DSR
6
NC
6
SP3_RTS-
7
SP3_RTS
7
NC
7
SP3_RTS+
8
SP3_CTS
8
NC
8
SP3_CTS+
9
SP3_RI
9
NC
9
SP3_CTS-
COM4 Serial Port
Connector type: DB-9 port
Connector location: COM4
Pin
Definition
Pin
Definition
1
DCD4
2
RXD4
3
TXD4
4
DTR4
5
GND
6
DSR4
7
RTS4
8
CTS4
9
RI4
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