Ver 1.00
3 page of 30
1
Serial communication interface
1.1 Physical interface
Arrangement of connector signals
RS-232C
Terminal #
Signal
I/O
1 NC
−
2 TxD
O
3 RxD
I
4 NC
−
5 S.GROUND
−
6 NC
−
7 NC
−
8 NC
−
9 NC
−
1.2 Transfer format of serial data
- Interface
:
RS-232C
- Communication system
:
Half-duplex communication
- Data transfer mode
:
Start stop synchronization
- Transfer rate
:
9,600bps
- Start bit ( ST )
:
1 bit
- Data bit ( b0-b7 )
:
8 bits
- Parity ( P )
:
Even number
- Stop bit ( SP )
:
1 bit
- Transfer data
:
ASCII code
- Control characters
:
STX (02h)
ETX (03h)
NAK (15h)
ACK (06h)
11
/
9600
(
sec
)
ST
SP
b0
b1
b2
b3
b4
b5
b6
b7
P