Copyright © 2016 NEXCOM International Co., Ltd. All Rights Reserved.
20
NISE 50 and NISE 50W User Manual
Chapter 2: Jumpers and Connectors
COM 2 Port (RS232)
Connector type: DB-9 port, 9-pin D-Sub
Connector location: COM2
COM 3 Port (RS422/485 Only)
Connector type: DB-9 port, 9-pin D-Sub
Connector location: CN3
Pin
Definition
Pin
Definition
1
N/A
2
SP2_RXD_R
3
SP2_TXD_R
4
N/A
5
GND
6
N/A
7
SP2_RTS#_R
8
SP2_CTS#_R
9
N/A
MH1
CHASIS_GNDR3
MH2
CHASIS_GNDR2
RS485
RS422
Pin
Definition
Pin
Definition
1
DATA-
1
TX-
2
DATA+
2
TX+
3
NC
3
RX+
4
NC
4
RX-
5
GND
5
GND
6
NC
6
RTS-
7
NC
7
RTS+
8
NC
8
CTS+
9
NC
9
CTS-
MH1
CHASIS_GNDR4
MH1
CHASIS_GNDR4
MH2
CHASIS_GNDR3
MH2
CHASIS_GNDR3
NH1
NA
NH1
NA
NH2
NA
NH2
NA
1
6
5
9
1
6
5
9