ToolLink User Manual
MKS Instruments, Inc.
Page 29 of 30
Appendix
B – ASCII Character Codes
Non-Printable Characters
Printable
Characters
Hex
Dec
Char
Name
Kybd Hex Dec
Char
Hex Dec
Char
Hex Dec
Char
0x00 0 NUL
Null
Ctrl
@
0x20
32 Space 0x40
64 @ 0x60 96
`
0x01
1
SOH Start of heading
Ctrl A 0x21
33
!
0x41
65
A
0x61
97
a
0x02
2
STX Start of text
Ctrl B 0x22
34
"
0x42
66
B
0x62
98
b
0x03
3
ETX End of text
Ctrl C 0x23
35
#
0x43
67
C
0x63
99
c
0x04
4
EOT End of transmit
Ctrl D 0x24
36
$
0x44
68
D
0x64
100
d
0x05 5 ENQ
Enquiry
Ctrl
E 0x25
37 % 0x45
69 E 0x65
101 e
0x06 6 ACK
Acknowledge
Ctrl
F 0x26
38 & 0x46
70 F 0x66
102 f
0x07 7 BEL
Bell
Ctrl
G 0x27
39 ' 0x47
71 G 0x67
103 g
0x08 8 BS
Backspace
Ctrl
H 0x28
40 ( 0x48
72 H 0x68
104 h
0x09 9 HT
Horizontal
tab
Ctrl I
0x29
41
)
0x49
73
I
0x69
105
i
0x0A
10
LF Line feed
Ctrl J 0x2A
42 *
0x4A
74 J
0x6A
106 j
0x0B 11 VT Vertical
tab
Ctrl K 0x2B
43
+
0x4B
75
K
0x6B 107
k
0x0C
12
FF Form feed
Ctrl L 0x2C
44
,
0x4C
76
L
0x6C
108
l
0x0D
13
CR Carriage return
Ctrl M 0x2D
45
-
0x4D
77
M
0x6D
109
m
0x0E
14
SO Shift out
Ctrl N 0x2E
46
.
0x4E
78
N
0x6E 110
n
0x0F
15
SI
Shift in
Ctrl O 0x2F
47
/
0x4F
79
O
0x6F 111
o
0x10
16
DLE Data line escape
Ctrl P 0x30
48
0
0x50
80
P
0x70
112
p
0x11
17
DC1 Device control 1
Ctrl Q 0x31
49
1
0x51
81
Q
0x71
113
q
0x12
18
DC2 Device control 2
Ctrl R 0x32
50
2
0x52
82
R
0x72
114
r
0x13
19
DC3 Device control 3
Ctrl S 0x33
51
3
0x53
83
S
0x73
115
s
0x14
20
DC4 Device control 4
Ctrl T 0x34
52
4
0x54
84
T
0x74
116
t
0x15 21 NAK
Negative
acknowledge
Ctrl U 0x35
53
5
0x55
85
U
0x75
117
u
0x16 22 SYN
Synchronous
idle Ctrl
V 0x36
53 6 0x56
86 V 0x76 118 v
0x17
23
ETB End of transmit
block
Ctrl W 0x37
55
7
0x57
87
W
0x77
119
w
0x18 24 CAN
Cancel
Ctrl
X 0x38
56 8 0x58
88 X 0x78 120 x
0x19
25
EM End of medium
Ctrl Y 0x39
57
9
0x59
89
Y
0x79
121
y
0x1A 26 SUB
Substitute
Ctrl
Z 0x3A
58
: 0x5A
90 Z 0x7A 122 z
0x1B 27 ESC
Escape
Ctrl
[
0x3B
59
; 0x5B
91
[ 0x7B 123 {
0x1C
28
FS File separator
Ctrl \ 0x3C
60
<
0x5C
92
\
0x7C
124
|
0x1D
29
GS Group separator
Ctrl ] 0x3D
61
=
0x5D
93
]
0x7D
125
}
0x1E 30 RS Record
separator Ctrl ^ 0x3E
62
>
0x5E
94
^
0x7E 126
~
0x1F 31 US Unit
separator
Ctrl
_ 0x3F
63 ?
0x5F
95 _
0x7F
127
DEL