GM8802C-DWeighing Transmitter
84 GM8802C-D110101
5.5.3 Explanation of Function Code
There are
5
function codes in above
Modbus
communication protocol:
01
Reading the
status of the coil;
03
Reading holding register;
05
Force single coil;
；
06
Preset single holding
register;
16 (10 Hex)
preset multiple holding registers.
01 Reading the Status of the Coil
Query:
Query information assigns the starting coil and the quantity of coil.
Response:
(1)
Each status of the coil corresponds to each data:
1=ON;0=OFF.
The
LSB
（
Least
Significant Bit
）
of the first byte is the start address during query, the other coils are
arranged from low bit to high bit till the
eighth
coil, the next byte is also arranged
from low bit to high bit.
(2)
If the return coil is not the multiple of
8
,then set
“0”
for the bits from the rest bits
of the last bits to the highest bit ,the byte district represents all the byte number.
Summary of Contents for GM8802C-D
Page 1: ...GM8802C D User Manual GM8802C D110101 48010224231000 ...
Page 11: ...GM8802C DWeighing Transmitter 8 GM8802C D110101 2 2 2 4 Wired Connection Load cell ...
Page 23: ...GM8802C DWeighing Transmitter 20 GM8802C D110101 ...
Page 35: ...GM8802C DWeighing Transmitter 32 GM8802C D110101 4 2 2Option Selecting Method ...