Serial Interface (RS-232C)
I. Feature
Item Contents
Protocol Half Duplex
Synch. Asynchronous
Communication
Distance
About 15M
Type of Connection 1:1
Control Code ASCII Code or HEXA Code
Baud Rate 9600, 19200, 38400, 57600, 76800, 115200bps
Data Bit 7,8bit
Data Type
Parity Bit None, Odd, Even Parity
II. COM2 RS-232 Connector Pins and Signals
Pin
Number
Signal Direction Type Contents
1 NC Not Used
2 RD(RxD) Input Data Receive
9Pin Female
3 SD(TxD) Output Data Send
4 DTR Output
Data Terminal
Ready
5 SG Signal Ground
6 DSR Input Data Set Ready
7 RTS Output
Send Request
Signal
8 CTS Input
Send Enable
Signal
9 NC Not Used
III. COM2 RS422 Connector Pins include RS232 Connector Pins and Signals
Type
Pin
Number
Signal Direction Contents
2
RD (RxD)
Input
Data Receive
3
SD (TxD)
Output
Data Send
9Pin Female
5
SG
RS422Signal Ground
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