YSI IQ SensorNet MIQ/A-MOD Module User Manual
Page 31
MIQ/(A-)MOD
Data transmission
31
ba76021e01
01/2012
Note
The counting method of the Modbus registers and Modbus bits and the
allocation of MSB and LSB is different from the usual method of most
programming languages.
MSB = Most significant bit, LSB = Least significant bit
Sensors S03
... S29
0017 ... 0232
..
.
..
.
..
.
..
.
Se
nso
r S3
0
0233
1-8
30 [= sensor number (S30)]
(Int 8)
7-0
0233
9-16
Sensor status
(Int 8)
7-0
0234
1-16
Sensor model
(Int 16)
15-0
0235
1-16
Status info
(Int 16)
15-0
0236
1-8
Measuring mode
(Int 8)
7-0
0236
9-16
Measured value status
(Int 8)
7-0
0237
1-16
Main measured value (IEEE-754 floating point, 32-bit)
(Float 32)
31-16
0238
1-16
Main measured value (IEEE-754 floating point, 32-bit)
(Float 32)
15-0
0239
1-16
Secondary meas. value (IEEE-754 floating point, 32-bit)
(Float 32)
31-16
0240
1-16
Secondary meas. value (IEEE-754 floating point, 32-bit)
(Float 32)
15-0
Modbus
Information
Data format
Register
Bit
Data
type
Bit
Modbus
Usually
Counting start of the register
1
0
MSB* allocation of the register
Bit 1
Bit 15
MSB* allocation of the register
Bit 16
Bit 0