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RS-232C INTERFACE
9PIN D-Sub
Pin No. Signal
Operation
2
RxD
Receive data
3
TxD
Transmit data
4
DTR
Data terminal ready
5
GND
Signal grounding
6
DSR
Data set ready
Memo :"PC" means a controller such as a personal
computer.
ASCII code table
Use this table to represent the values or alphabets in ASCII with the RS-232C interface.
0 1 2
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
1
5
6
9
Direction of
signal
VCR©PC
VCR†PC
VCR†PC
VCR©PC
3 4 5 6 7 8 9 A B C D E F
SP 0
P
1 A Q a q
2 B R b
3 C S c
4 D T d
5 E U e u
6 F V f
7 G W g
8 H X h
9 I
Y i
J
Z j
K
k
L
l
M
m
N
n
O
o
– RS-232C specifications –
Mode
Character length : 8 bits
Parity check
Start bit
Stop bit
Data rate
Bit configuration
D0 D1
Starting bit
p
r
s
t
v
w
x
y
z
: Non-synchronous
: None
: 1
: 1
: 9600bps
D2 D3
D4 D5
D6 D7
Stopping bit
85
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