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Poll register address 0xBB8
Request [Hex]:
Modbus
address
46
Response [Hex]:
Modbus
address
46
Poll register address 0xBB8-0xBBE
Request [Hex]:
Modbus
address
46
Response [Hex]:
Modbus
address
46
Register 3
value Lo
7B
Decoding of floating point values:
Floating point values are stored according IEEE754. The byte pairs 1, 2 and 3, 4 are reorganised as
follows:
MMMMMMMM
Byte 3
Example
(numbers taken from T reading in first Modbus request/response example in this chapter)
Response [Hex]
Byte 1 (Register 2 - Hi)
41
100 0001
0
SEEE EEEE
Decimal value: 26.66048812866211
16
Function
Starting
Starting
code
address Hi
address Lo
03
0B
Function
Byte
Register 1
code
count
value Hi
03
04
Function
Starting
Starting
code
address Hi
address Lo
03
0B
Function
Byte
Register 1
code
count
value Hi
03
0C
Register 4
Register 4
Register 5
value Hi
value Lo
value HI
3E
AD
MMMMMMMM
Byte 4
Byte 2 (Register 2 - Lo)
D5
1101 0101
EMMM MMMM
Qty. of
Qty. of
registers Hi
registers Lo
B8
00
02
Register 1
Register 2
value Lo
value Hi
E6
F1
41
Qty. of
Qty. of
registers Hi
registers Lo
B8
00
06
Register 1
Register 2
value Lo
value Hi
0B
C9
41
Register 5
Register 6
value Lo
value Hi
FF
FF
FF
SEEEEEEE
Byte 1
Byte 3 (Register 1 - Hi)
48
0100 1000
MMMM MMMM
User Manual MOP301 Digital Moisture in Oil Immersion Probe
CRC
49
7D
Register 2
CRC
value Lo
DA
1A
47
CRC
48
BE
Register 2
Register 3
value Lo
value Hi
DB
BD
Register 6
CRC
value Lo
FF
B7
9A
EMMMMMMM
Byte 2
:
Byte 4 (Register 1 - Lo)
AE
1010 1110
MMMM MMMM
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