Haiwell PLC - Load Cell Module Application Example
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9.Automatic peeling 2DH (judged every 5S)
The weighing platform or equipment will cause dust or residue scattering during weighing process, which will cause the platform to
peel automatically when the current weight is not zero without placing any weighing items. If the automatic peeling function is
used, as long as the current weight is less than the set automatic peeling weight 2DH value, the weighing module will peel
automatically the current value.
10. Weighing status
The module weighing block can also determine the status of the scale and record the special CR register 11H. The status code of
11H is as follows:
Bit0: When the bit is 1, it means that the weighing unit is in no-load state, and the judgment range of no-load is set on CR 23H.
Bit1: When this bit is 1, it means that the upper load of the weighing unit exceeds the set upper weight limit, and the upper weight
limit CR is 24H.
Bit2: When this bit is 1, it means that the measurement of weighing unit reaches a stable state, and the range value of stability
judgment and the number of checks are on 20H and 21H.
Each state can convert the value of register into place with wtob instruction for quick check.
11.Standstill check function
When the item is placed on the load Cell to measure weight, the standstill check function can be used to know whether the current
measurement is stable.
if the amplitude of the measured value is within the checking range set by CR 21H, the relevant Bit of CR11H will be set to 1.
If the measured value exceeds the set range of standstill, the relevant stable-Bit of the CR 11H will be set to 0, until the standstill
check number 20H is within the checking range, and the relevant stable-Bit of the CR 11H will be then set to 1.
For example, the measurement time is 10ms, the standstill check times is set to 10 times, the checking range is 1000, when the
variation range exceeds 1000, the measurement value is unstable, that is, the relevant stable-Bit of CR 11H will be set to 0, when
