Copyright © 2011 NEXCOM International Co., Ltd. All Rights Reserved.
26
Chapter 2: Jumpers and Connectors
NISE 2100, NISE 2100A, NISE 2110, NISE 2110A User Manual
COM1 and COM2 Ports
Connector size: DB-9 port
Connector location: COM3
6
1
5
9
6
1
5
9
B
A
Pin
Definition
Pin
Definition
1
COM1_DCD
6
COM1_DSR
2
COM1_RXD
7
COM1_RTS
3
COM1_TXD
8
COM1_CTS
4
COM1_DTR
9
COM1_RI
5
GND
COM1A
Pin
Definition
Pin
Definition
1
COM2_DCD
6
COM2_DSR
2
COM2_RXD
7
COM2_RTS
3
COM2_TXD
8
COM2_CTS
4
COM2_DTR
9
COM2_RI
5
GND
COM2B
Pin
Definition
Pin
Definition
1
TXD-
6
Reserved
2
TXD+
7
Reserved
3
Reserved
8
Reserved
4
Reserved
9
Reserved
5
Reserved
RS485
Pin
Definition
Pin
Definition
1
TXD-
6
RTS-
2
TXD+
7
RTS+
3
RXD+
8
CTS+
4
RXD-
9
CTS-
5
GND
RS422