TB20, strain gauge weighing module | Edition 1 | 21.12.2018
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Parameters of the weighing module
The configuration takes place for the measuring of bridge voltages of a load cell and issuing in mV/V
or standardized in kg. The weighing module is configured over a data range of 15 bytes.
The default settings are underlined.
Parameters
Address
Description
Value range
Operating mode 1
Byte 0
Operating mode in which the load cell
module works.
1: Measuring Mode
Measuring range
Byte 1:
Bit 0
Measurement range in which the AD
converter works.
0: ±20 mV or ±4 mV/V
1: ±10 mV or ±2 mV/V
Conversion rate
Byte 1:
Bit 1-3
The conversion rates can be configured in
samples per second (SPS).
0: 6.25
1: 7.5
2: 12.5
3: 15
4: 25
5: 30
6: 50
7: 60
Issuing of measurement
value
Byte 1:
Bit 4
Representation of the measurement value
0: kg
1: mV/V
Number of values for
the averaging
Byte 2
The measurement values can be steadied
through a moving average filter with a
differing number of averages.
1: no filtering (n=1)
n = 2 … 255
Number of sampling
points to be used
Byte 3:
Bit 0-2
Number of sampling points (to be used
ascending and without gaps!)
0: Sampling points are not used
n = 1…5
Characteristic value
Byte 4–
Byte 5
Characteristic value of the
connected load cell in mV/V with 3 decimal
places (e.g. 2.345 are transferred as 2345)
1 to 4000
Rated load
Byte 6 –
Byte 9
Rated load of the connected load cell in kg
with 2 decimal places (10000, for example,
is transferred as 100.00 kg)
1 to 10000000
Minimum bridge feed
voltage
Byte 10 –
Byte 11
Feed voltage with 3 decimal places.
Transferred are, for example, 3756 as 3.756
V.
When min. and max. values are zero, the
monitoring of the bridge feed voltage is
deactivated.
0 or 3700 to 6500
Minimum voltage must be less than
the maximum bridge feed voltage
Maximum bridge feed
voltage
Byte 12 –
Byte 13
Feed voltage with 3 decimal places.
Transferred are, for example, 5123 as 5.123
V.
When min. and max. values are zero, the
monitoring of the bridge feed voltage is
deactivated.
0 or 3700 to 6500
Minimum voltage must be greater
than the minimum bridge feed
voltage.
Reserved
Byte 14
0
