32
of bytes
numerical
value
0x02
A-Z
a-z
*
*
0x03
Table 9.2 Data frame format of lower computer (instrument) answering end
The structure and meaning of the data frame answered by the answering end are the same as
those of the sending end. The first difference is the third part (CMD), and the lower computer
returns the lowercase letters of the corresponding commands. The difference is that the (DATA)
part of the lower computer will definitely not be empty.
2, top loose communication protocol command detailed explanation
2.1 Command A to take the current weighing and status, including net weight, tare weight
and various statuses.
Command (example address is a):
Command
segment
XON
ADD
CMD
CHK
XOFF
Hex
format
02
41
41
42
03
Ascii
format
*
A
A
B
*
Slave answer:
content
XON
ADD
CMD
DATA
CHK
XOFF
±
nnnnn
p
tttttt
e
f
u
Hex
format
02
41
61
See the table below.
49
03
Ascii
format
*
A
a
I
*
DATA part of slave machine answer (Note: the specific data in the following table is an
example)
DATA
±
nnnnn
p
tttttt
e
f
u
meaning
symb
ol
Net weight
decima
l point
Tare weight value
mista
ke
condit
ion
reser
ve
Hex
format
2B
30 30 35 36 33 32
30
30 30 30 30 30 30
00
00
20
Ascii
format
+
005632
0
000000
