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・transmit example
Data
Hexadecimal format (H)
(host computer)
BCC (block check character) checksum (1) to (4) = 44+53+50+03 = EAH
・receiving example
Data
Hexadecimal format (H)
(response of meter)
BCC (block check character) checksum (1) to (12) = 50+48+20+35+30+30+30+30+20+48+49+03 = 2 6 1 H
3) Control code
Control Code
STX
ETX
EOT
ENQ
ACK
(1) No response for line releasing "EOT".
(2) No BCC (block check character) appended for "ACK", "EOT" and "ENQ".
(3) BCC (block check character) is added in both transmit and receiving.
4) ASCII code table
High bit
Low bit
Control character
0
NUL
1
SOH
2
STX
3
ETX
4
EOT
5
6
7
BEL
8
9
A
B
C
D
E
F
1
2
3
4
STX
D
S
P
02
44
53
50
(1) (2) (3)
1
2
3
4
STX
P
H
02
50
48
20
(1) (2) (3) (4)
Hexadecimal Format(H)
02
03
04
05
06
0
1
Number, mark
DLE
SPACE
DC1
DC2
DC3
DC4
EN
NAK
AC
SYN
ETB
BS
CAN
HT
EM
LF
SUB
VT
ESC
FF
FS
CR
GS
SO
RS
S I
US
5
6
7
8
9
ETX
A
E
CR
LF
03
41
45
0D
0A
(4)
5
6
7
8
9
5
0
0
0
0
35
30
30
30
30
(5) (6) (7) (8) (9) (10) (11) (12)
Name
Start of Text
End of Text
End of Transmission
Enquiry
Acknowledge
2
3
Upper case character Lower case character
0
!
1
"
2
#
3
$
4
%
5
&
6
'
7
(
8
)
9
*
:
+
;
,
<
-
=
.
>
/
?
10
11 12
13
14 15 16 17
H
I
ETX
1
20
48
49
03
31
4
5
@
P
A
Q
B
R
C
S
D
T
E
U
F
V
G
W
H
X
I
Y
J
Z
K
[
L
＼
M
]
N
^
O
-
80/118
6
CR
LF
36
0D
0A
6
7
`
p
a
q
b
r
c
s
d
t
e
u
f
v
g
w
h
x
i
y
j
z
k
{
l
|
m
}
n
～
o
DEL
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