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2.2. RS-232 Interface
2.2.1. Pin-out
2.2.2. Signals
Pin Number
Signal
1
DCD
2
TxD
3
RxD
4
DSR
5
GND
6
DTR
7
CTS
8
RTS
9
Vcc
2.3. Factory Settings
The following is the factory settings of COM port. You can change the factory settings of COM
port with commands. In this case, you have to remember the changed factory settings.
Baud rate: 9600 bps
Data Bit: 8 bit
Parity Bit: No parity
Stop Bit: 1 stop bit
Flow control: None
1
The default hardware configuration is for using CTS. If you want to use DSR, please contact
us.
Direction
Output
Data Carrier Detect
Output
Transmitted Data
Input
Received Data
N/A (Input)
Option: Data Set Ready
N/A
Signal Ground
Output
Data Terminal Ready
Input
Clear to Send
Output
Request to Send
Input
Power Supply
Description
1
5
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