TB20, strain gauge weighing module | Edition 1 | 21.12.2018
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Right window: Display of live statuses (IO data):
Measurement value:
Current measurement value in mV/V or kg, or issuing of the configured offset in
kg or of the configured sampling points in kg.
Value valid:
for causes for an invalid measurement value see chapter 0.
In the case of moving averaging, the "Value valid" display is delayed. For the averaging, the
measurement cycle must be run through once until a valid measurement value is displayed.
Bridge feed voltage is too small:
the voltage prevailing at the terminals REF+/REF- is smaller than the
configured min. voltage limit. No reporting when the voltage monitoring is deactivated.
Bridge feed voltage is too large:
the voltage prevailing at the terminals REF+/REF- is greater than the
configured max. voltage limit. No reporting when the voltage monitoring is deactivated.
Line break:
display when a line break of the AI+ sense line is determined. The measurement of the
measuring lines to the load cell must be initiated by the bus master or in the simulation.
Writing/reading error for offset/sampling point:
The configuration values for offset/sampling
point are only transmitted once via the bus during the configuration or when reading out. The
message appears when an error has occurred in the EEPROM while writing an offset or sampling
point.
ADC overflow:
the measurement inputs neighboring on the AI+/AI- or REF+/REF- result in the
overflow/underflow of the analog-digital converter of the measurement channel.
Control command executed:
shows that a control command has been carried out. The bit must then
be reset by the "Acknowledgment bit for system command was executed" OB5 Bit 7.
