
33
numerical
value
0x02
A-Z
a-z
*
*
0x03
Table 9.2 data frame format of lower computer (instrument) response terminal
The structure and meaning of the data frame answered by the responder is the same as that
of the sender. The first difference is that in the third part (CMD), the lower computer returns the
lower case letter of the corresponding command.Data will not be empty.
2. Detailed explanation of top song communication protocol command
2.1 command a to take the current weighing and status, including net weight, tare weight
and various states.
Host command (example address is a)
Command
section
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
Note: F represents the current state, and its bit meaning: D0- zero D1- stable
D2- peeling.