Bronkhorst RS232 interface User Manual
Page 11
BRONKHORST
®
Page 11
RS232 interface
9.17.027
3.3
I
NTERFACE STRUCTURE
3.3.1 Basic datalink format
The basic data link message format has the following fields:
node
message destination
length
data field length
data
data
Data
etc.
In the FLOW‐BUS environment the data field may contain up to 256 bytes of data. In the HOST application described
here, the messages are according to PROPAR coding rules and the data field will contain a maximum of 64 bytes.
3.3.2 ASCII table
The American Standard Code for Information Interchange (ASCII) is a character‐encoding scheme based on the
ordering of the English alphabet. ASCII codes represent text in computers, communications equipment, and other
devices that use text. Most modern character‐encoding schemes are based on ASCII.
Dec
Oct
Hex
Binary
Code
Dec
Oct
Hex
Binary
Code Dec Oct Hex
Binary
Code Dec Oct
Hex
Binary
Code
32
040
20
0100000
SP
56
070
38
0111000
8
80 120 50 1010000
P
104 150
68
1101000
h
33
041
21
0100001
!
57
071
39
0111001
9
81 121 51 1010001
Q
105 151
69
1101001
i
34
042
22
0100010
"
58
072
3A
0111010
:
82 122 52 1010010
R
106 152
6A
1101010
j
35
043
23
0100011
#
59
073
3B
0111011
;
83 123 53 1010011
S
107 153
6B
1101011
k
36
044
24
0100100
$
60
074
3C
0111100
<
84 124 54 1010100
T
108 154
6C
1101100
l
37
045
25
0100101
%
61
075
3D
0111101
=
85 125 55 1010101
U
109 155
6D
1101101
m
38
046
26
0100110
&
62
076
3E
0111110
>
86 126 56 1010110
V
110 156
6E
1101110
n
39
047
27
0100111
'
63
077
3F
0111111
?
87 127 57 1010111
W
111 157
6F
1101111
o
40
050
28
0101000
(
64
100
40
1000000
@
88 130 58 1011000
X
112 160
70
1110000
p
41
051
29
0101001
)
65
101
41
1000001
A
89 131 59 1011001
Y
113 161
71
1110001
q
42
052
2A
0101010
*
66
102
42
1000010
B
90 132 5A 1011010
Z
114 162
72
1110010
r
43
053
2B
0101011
+
67
103
43
1000011
C
91 133 5B 1011011
[
115 163
73
1110011
s
44
054
2C
0101100
,
68
104
44
1000100
D
92 134 5C 1011100
\
116 164
74
1110100
t
45
055
2D
0101101
‐
69
105
45
1000101
E
93 135 5D 1011101
]
117 165
75
1110101
u
46
056
2E
0101110
.
70
106
46
1000110
F
94 136 5E 1011110
^
118 166
76
1110110
v
47
057
2F
0101111
/
71
107
47
1000111
G
95 137 5F 1011111
_
119 167
77
1110111
w
48
060
30
0110000
0
72
110
48
1001000
H
96 140 60 1100000
`
120 170
78
1111000
x
49
061
31
0110001
1
73
111
49
1001001
I
97 141 61 1100001
a
121 171
79
1111001
y
50
062
32
0110010
2
74
112
4A
1001010
J
98 142 62 1100010
b
122 172
7A
1111010
z
51
063
33
0110011
3
75
113
4B
1001011
K
99 143 63 1100011
c
123 173
7B
1111011
{
52
064
34
0110100
4
76
114
4C
1001100
L
100 144 64 1100100
d
124 174
7C
1111100
|
53
065
35
0110101
5
77
115
4D
1001101
M
101 145 65 1100101
e
125 175
7D
1111101
}
54
066
36
0110110
6
78
116
4E
1001110
N
102 146 66 1100110
f
126 176
7E
1111110
~
55
067
37
0110111
7
79
117
4F
1001111
O
103 147 67 1100111
g
127 177
7F
1111111 DEL