3 Nomenclature and Functions
32
CPSN-MCB271-S1-041 Reference Manual (Hardware)
RS-232C Interface (COM)
This product has 1port of RS-232C compliant serial ports of a baud rate 921,600bps (Maximum).
Table 3.3. Serial Ports connector
Pin No.
Signal
name
Direction
Meaning
1
CD
Input
Carrier detection
2
RD
Input
Received data
3
TD
Output
Transmitted data
4
DTR
Output
Data terminal ready
5
GND
-----
Signal ground
6
DSR
Input
Data set ready
7
RTS
Output
Request to send
8
CTS
Input
Clear to send
9
RI
Input
Ring indicate
1
5
6
9
No.4-40UNC
Inch nut
