TOHO ELECTRONICS TTM-00BT User Manual
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7.9.13 Table of ASCII codes
ASCII code
02H
03H
06H
15H
Code used
STX
ETX
ACK
NAK
ASCII code
30H
31H
32H
33H
34H
35H
36H
37H
38H
39H
Number used
0
1
2
3
4
5
6
7
8
9
2DH
20H
−
Minus
SP
Space
ASCII code
41H
42H
43H
44H
45H
46H
47H
48H
49H
4AH
Code used
A
B
C
D
E
F
G
H
I
J
ASCII code
4BH
4CH
4DH
4EH
4FH
50H
51H
52H
53H
54H
Alphabetical
character used
K
L
M
N
O
P
Q
R
S
T
55H
56H
57H
58H
59H
5AH
20H
72H
77H
Y
V
W
X
Y
Z
SP
Space
w
Lower case
r
Lower case
7.9.14 Communications specifications
1) Communications standard category: Compliant with EIA standard RS-232C or RS-485
2) Communications systems
: Network.................................. For RS-485: up to 1 pair, 16 stations
For RS-232C: 1 pair, 1 station
: Direction of information......... Half duplex
: Synchronization system.......... Asynchronous
: Transmission code .................. ASCII code
3) Interface system
: Signal line............................... For RS-485: Two-wire type (two transmission and
reception lines)
For RS-232C: Three-wire type (two transmission and
reception lines, one SG line)
: Communications speed .......... 4,800, 9600, 19,200 and 38,400 bps
Set this with DIP switches.
: Communications distance ...... For RS-485: 500 mm maximum
For RS-232C: 15 m maximum
Provided that it varies somewhat depending on the cable and other ambient conditions.