Chapter 2: Jumpers and Connectors
COM4 Port
Connector type: DB-9 port, 9-pin D-Sub
Connector location: CN1
1
5
6
9
Pin
Definition
1
SP4_DCD
3
SP4_TXD
5
GND
7
SP4_RTS
9
SP4_RI
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RS232
Pin
Definition
2
SP4_RXD
4
SP4_DTR
6
SP4_DSR
8
SP4_CTS
19
NISE 105U User Manual
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