INTERFACE
CPD-3230 Customer Pole Display
4
CHAPTER 2
INTERFACE
2.1 Communication Specification
RS232C Type
Data transmission
Serial
Synchronization
Asynchronous
Handshaking
None
Signal level
MARK = -3 to -15V (logical “1” OFF)
SPACE = +3 to +15V (logical “0” ON)
Baud rate
9600, 19200, 38400, 115200 bps
Parity
None, Even
Bit length (Data word length)
8 bits
Stop bits
1 bit
USB Type
The CPD-3230 series is compatible to the High-speed USB 2.0 protocol which has a raw
data rate of 12 megabits per second (Mbps).
2.2 Standard Interface
2.2.1
Serial RS232 connector to PC/HOST
Connector Type: D-sub 9Pin (Female)
Pin assignment
Pin No.
Signal
I/O
Function
Illustration
2
TXD
Output
Transmit Data
3
RXD
Input
Receive Data
4, 7
DTR/RTS
Output
Data Terminal Ready
5
GND
-
Ground
6,8
DSR/CTS
Input
Data Set Ready
NOTE:
PIN9 DC input is necessarily required when DB9 functions as power source.
1
5
6
9