Overview
Hex values can be used to specify the ASCII character of the data being received.
ASCII control characters (character code 0-31)
HEX |
Symbol |
Description |
00 |
NUL |
Null char |
01 |
SOH |
Start of Heading |
02 |
STX |
Start of Text |
03 |
ETX |
End of Text |
04 |
EOT |
End of Transmission |
05 |
ENQ |
Enquiry |
06 |
ACK |
Acknowledgment |
07 |
BEL |
Bell |
08 |
BS |
Back Space |
09 |
HT |
Horizontal Tab |
0A |
LF |
Line Feed |
0B |
VT |
Vertical Tab |
0C |
FF |
Form Feed |
0D |
CR |
Carriage Return |
0E |
SO |
Shift Out / X-On |
0F |
SI |
Shift In / X-Off |
10 |
DLE |
Data Line Escape |
11 |
DC1 |
Device Control 1 (oft. XON) |
12 |
DC2 |
Device Control 2 |
13 |
DC3 |
Device Control 3 (oft. XOFF) |
14 |
DC4 |
Device Control 4 |
15 |
NAK |
Negative Acknowledgement |
16 |
SYN |
Synchronous Idle |
17 |
ETB |
End of Transmit Block |
18 |
CAN |
Cancel |
19 |
EM |
End of Medium |
1A |
SUB |
Substitute |
1B |
ESC |
Escape |
1C |
FS |
File Separator |
1D |
GS |
Group Separator |
1E |
RS |
Record Separator |
1F |
US |
Unit Separator |
HEX |
Symbol |
Description |
00 |
NUL |
Null char |
01 |
SOH |
Start of Heading |
02 |
STX |
Start of Text |
03 |
ETX |
End of Text |
04 |
EOT |
End of Transmission |
05 |
ENQ |
Enquiry |
06 |
ACK |
Acknowledgment |
07 |
BEL |
Bell |
08 |
BS |
Back Space |
09 |
HT |
Horizontal Tab |
0A |
LF |
Line Feed |
0B |
VT |
Vertical Tab |
0C |
FF |
Form Feed |
0D |
CR |
Carriage Return |
0E |
SO |
Shift Out / X-On |
0F |
SI |
Shift In / X-Off |
10 |
DLE |
Data Line Escape |
11 |
DC1 |
Device Control 1 (oft. XON) |
12 |
DC2 |
Device Control 2 |
13 |
DC3 |
Device Control 3 (oft. XOFF) |
14 |
DC4 |
Device Control 4 |
15 |
NAK |
Negative Acknowledgement |
16 |
SYN |
Synchronous Idle |
17 |
ETB |
End of Transmit Block |
18 |
CAN |
Cancel |
19 |
EM |
End of Medium |
1A |
SUB |
Substitute |
1B |
ESC |
Escape |
1C |
FS |
File Separator |
1D |
GS |
Group Separator |
1E |
RS |
Record Separator |
1F |
US |
Unit Separator |
ASCII printable characters (character code 32-127)
HEX |
Symbol |
Description |
20 |
Space |
|
21 |
! |
Exclamation mark |
22 |
" |
Double quotes |
23 |
# |
Number |
24 |
$ |
Dollar |
25 |
% |
Percent |
26 |
& |
Ampersand |
27 |
' |
Single quote |
28 |
( |
Open parenthesis |
29 |
) |
Close parenthesis |
2A |
* |
Asterisk |
2B |
+ |
Plus |
2C |
, |
Comma |
2D |
- |
Hyphen |
2E |
. |
Period |
2F |
/ |
Slash or divide |
30 |
0 |
Zero |
31 |
1 |
One |
32 |
2 |
Two |
33 |
3 |
Three |
34 |
4 |
Four |
35 |
5 |
Five |
36 |
6 |
Six |
37 |
7 |
Seven |
38 |
8 |
Eight |
39 |
9 |
Nine |
3A |
: |
Colon |
3B |
; |
Semicolon |
3C |
< |
Less than (or open angled bracket) |
3D |
= |
Equals |
3E |
> |
Greater than (or close angled bracket) |
3F |
? |
Question mark |
40 |
@ |
At symbol |
41 |
A |
Uppercase A |
42 |
B |
Uppercase B |
43 |
C |
Uppercase C |
44 |
D |
Uppercase D |
45 |
E |
Uppercase E |
46 |
F |
Uppercase F |
47 |
G |
Uppercase G |
48 |
H |
Uppercase H |
49 |
I |
Uppercase I |
4A |
J |
Uppercase J |
4B |
K |
Uppercase K |
4C |
L |
Uppercase L |
4D |
M |
Uppercase M |
4E |
N |
Uppercase N |
4F |
O |
Uppercase O |
50 |
P |
Uppercase P |
51 |
Q |
Uppercase Q |
52 |
R |
Uppercase R |
53 |
S |
Uppercase S |
54 |
T |
Uppercase T |
55 |
U |
Uppercase U |
56 |
V |
Uppercase V |
57 |
W |
Uppercase W |
58 |
X |
Uppercase X |
59 |
Y |
Uppercase Y |
5A |
Z |
Uppercase Z |
5B |
[ |
Opening bracket |
5C |
\ |
Backslash |
5D |
] |
Closing bracket |
5E |
^ |
Caret |
5F |
_ |
Underscore |
60 |
` |
Grave accent |
61 |
a |
Lowercase a |
62 |
b |
Lowercase b |
63 |
c |
Lowercase c |
64 |
d |
Lowercase d |
65 |
e |
Lowercase e |
66 |
f |
Lowercase f |
67 |
g |
Lowercase g |
68 |
h |
Lowercase h |
69 |
i |
Lowercase i |
6A |
j |
Lowercase j |
6B |
k |
Lowercase k |
6C |
l |
Lowercase l |
6D |
m |
Lowercase m |
6E |
n |
Lowercase n |
6F |
o |
Lowercase o |
70 |
p |
Lowercase p |
71 |
q |
Lowercase q |
72 |
r |
Lowercase r |
73 |
s |
Lowercase s |
74 |
t |
Lowercase t |
75 |
u |
Lowercase u |
76 |
v |
Lowercase v |
77 |
w |
Lowercase w |
78 |
x |
Lowercase x |
79 |
y |
Lowercase y |
7A |
z |
Lowercase z |
7B |
{ |
Opening brace |
7C |
| |
Vertical bar - pipe |
7D |
} |
Closing brace |
7E |
~ |
Equivalency sign - tilde |
7F |
Delete |