A
A P P E N D I X
ASCII Character Set
This appendix presents the material in the form of a table, provides ASCII character names and
meanings, and clarifies what you enter from the keyboard.
Some commands described in this publication, such as the escape-character line configuration
command in the “Terminal Line and Modem Support Commands” chapter require that you enter the
decimal representation of an ASCII character.
Table A-1 provides code translations from ASCII characters to the decimal numbers. For example,
the ASCII carriage return (CR) is decimal 13. This means that pressing Ctrl-M at your terminal
generates decimal 13, which is interpreted as a CR.
Table A-1
ASCII Translation Table
Numeric Values
Decimal
Hex
ASCII
Character
Meaning
Keyboard
Entry
0
00
NUL
Null
Ctrl-@
1
01
SOH
Start of heading
Ctrl-A
2
02
STX
Start of text
Ctrl-B
3
03
ETX
Break/end of text
Ctrl-C
4
04
EOT
End of transmission
Ctrl-D
5
05
ENQ
Enquiry
Ctrl-E
6
06
ACK
Positive acknowledgment
Ctrl-F
7
07
BEL
Bell
Ctrl-G
8
08
BS
Backspace
Ctrl-H
9
09
HT
Horizontal tab
Ctrl-I
10
0A
LF
Line feed
Ctrl-J
11
0B
VT
Vertical tab
Ctrl-K
12
0C
FF
Form feed
Ctrl-L
13
0D
CR
Carriage return
Ctrl-M
14
0E
SO
Shift out
Ctrl-N
15
0F
SI
Shift in/XON (resume output)
Ctrl-O
16
10
DLE
Data link escape
Ctrl-P
17
11
DC1
Device control character 1
Ctrl-Q
ASCII Character Set A-1
Numeric Values
Decimal
Hex
ASCII
Character
Meaning
Keyboard
Entry
18
12
DC2
Device control character 2
Ctrl-R
19
13
DC3
Device control character 3
Ctrl-S
20
14
DC4
Device control character 4
Ctrl-T
21
15
NAK
Negative Acknowledgment
Ctrl-U
22
16
SYN
Synchronous idle
Ctrl-V
23
17
ETB
End of transmission block
Ctrl-W
24
18
CAN
Cancel
Ctrl-X
25
19
EM
End of medium
Ctrl-Y
26
1A
SUB
substitute/end of file
Ctrl-Z
27
1B
ESC
Escape
Ctrl-[
28
1C
FS
File separator
Ctrl-\
29
1D
GS
Group separator
Ctrl-]
30
1E
RS
Record separator
Ctrl-^
31
1F
US
Unit separator
Ctrl-_
32
20
SP
Space
Space
33
21
!
!
!
34
22
"
"
"
35
23
#
#
#
36
24
$
$
$
37
25
%
%
%
38
26
&
&
&
39
27
’
’
’
40
28
(
(
(
41
29
)
)
)
42
2A
*
*
*
43
2B
+
+
+
44
2C
,
,
,
45
2D
-
-
-
46
2E
.
.
.
47
2F
/
/
/
48
30
0
Zero
0
49
31
1
One
1
50
32
2
Two
2
51
33
3
Three
3
52
34
4
Four
4
53
35
5
Five
5
54
36
6
Six
6
55
37
7
Seven
7
A-2 Access and Communication Servers Command Reference
Numeric Values
Decimal
Hex
ASCII
Character
Meaning
Keyboard
Entry
56
38
8
Eight
8
57
39
9
Nine
9
58
3A
:
:
:
59
3B
;
;
;
60
3C
<
<
<
61
3D
=
=
=
62
3E
>
>
>
63
3F
?
?
?
64
40
@
@
@
65
41
A
A
A
66
42
B
B
B
67
43
C
C
C
68
44
D
D
D
69
45
E
E
E
70
46
F
F
F
71
47
G
G
G
72
48
H
H
H
73
49
I
I
I
74
4A
J
J
J
75
4B
K
K
K
76
4C
L
L
L
77
4D
M
M
M
78
4E
N
N
N
79
4F
O
O
O
80
50
P
P
P
81
51
Q
Q
Q
82
52
R
R
R
83
53
S
S
S
84
54
T
T
T
85
55
U
U
U
86
56
V
V
V
87
57
W
W
W
88
58
X
X
X
89
59
Y
Y
Y
90
5A
Z
Z
Z
91
5B
[
[
[
92
5C
\
\
\
93
5D
]
]
]
ASCII Character Set A-3
Numeric Values
Decimal
Hex
ASCII
Character
Meaning
Keyboard
Entry
94
5E
^
^
^
95
5F
_
_
_
96
60
`
`
`
97
61
a
a
a
98
62
b
b
b
99
63
c
c
c
100
64
d
d
d
101
65
e
e
e
102
66
f
f
f
103
67
g
g
g
104
68
h
h
h
105
69
i
i
i
106
6A
j
j
j
107
6B
k
k
k
108
6C
l
l
l
109
6D
m
m
m
110
6E
n
n
n
111
6F
o
o
o
112
70
p
p
p
113
71
q
q
q
114
72
r
r
r
115
73
s
s
s
116
74
t
t
t
117
75
u
u
u
118
76
v
v
v
119
77
w
w
w
120
78
x
x
x
121
79
y
y
y
122
7A
z
z
z
123
7B
{
{
{
124
7C
|
|
|
125
7D
}
}
}
126
7E
~
Tilde
~
127
7F
DEL
Delete
Del
A-4 Access and Communication Servers Command Reference
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