Appendix
Preseted tare cannot be negative or outrange
F.2 Weighing Library Mode Explanation
This section shows important parameters of each instruction and operation notes.
1. Weight_Config
Call it by SM0.1, where ParaListBase set the startup address pointer and its memory range of
specified parameter list, each channel occupy 72 bytes; ChanneINum connect SM231 channel
number which can only more than or equal to actual one for you
2. Weight_Init
Call it by SM0.0, you can modify Sensitivity, LimitFreq and average Filter depth which will be
given a value in factory setting(modify sensitivity before calibration, and anytime to modify for the
other two).
Sensitivity
According to eigenvalue of weighing sensor, 1mV/V, 2mV/V or 4mV/V can be selected.
For example: if the eigenvalue of weighing sensor is 2.85mV/V, the next higher eigenvalue must
set as 4mV/V.
Cutoff frequency of low pass filter
Equip a low pass filter conduct electricity in critical condition in modules to barrage jamming.
Figure below shows step response of digital lowpass filter at fg=2Hz:
110
100
90
80
70
60
50
40
30
20
10
0
0 500
ms
%
Define appropriate cutoff frequency to resist disturbance. The reaction speed that weighing
module to measurement is set by defining limiting frequency.
For example: the weighing module shows quick response at 5Hz cutoff frequency, but much
slower at 0.5Hz.
Average filter depth
To Next Page
Loading...
Need help?
General