5
2.2. RS-232 Interface
2.2.1. Pin-out
2.2.2. Signals
Pin Number
Signal
Direction
Description
1
DCD
Output
Data Carrier Detect
2 TxD
Output
Transmitted
Data
3 RxD
Input
Received
Data
4
DSR
N/A (Input)
Option: Data Set Ready
(Remark1)
5 GND
N/A
Signal
Ground
6 DTR
Output
Data
Terminal
Ready
7
CTS
Input
Clear to Send
(Remark1)
8
RTS
Output
Request to Send
9 Vcc
Input
Power
Supply
Remark1) The default hardware configuration is for using CTS. If you want to use DSR, please
contact us.
2.3. Factory Setting
The following is the factory setting of COM port.
Baud rate: 9600 bps
Data Bit: 8 bit
Parity Bit: No parity
Stop Bit: 1 stop bit
Flow control: None
