NEXCOM NISE 2300 User Manual
Page 36
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Copyright © 2013 NEXCOM International Co., Ltd. All Rights Reserved.
22
NISE 2300 User Manual
Chapter 2: Jumpers and Connectors
RS232
RS485
RS422
Pin
Definition
Pin
Definition
Pin
Definition
10
SP4_DCD
1
SP4_DATA-
1
SP4_TX-
11
SP4_RXD
2
SP4_DATA+
2
SP4_TX+
12
SP4_TXD
3
NC
3
SP4_RX+
13
SP4_DTR
4
NC
4
SP4_RX-
14
GND
5
GND
5
GND
15
SP4_DSR
6
NC
6
SP4_RTS-
16
SP4_RTS
7
NC
7
SP4_RTS+
17
SP4_CTS
8
NC
8
SP4_CTS+
18
SP4_RI
9
NC
9
SP4_CTS-
COM4 Connector Pin Definition
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