You can use the status update to contain summary information about your channel. It is similar to a ninth field, intended for text.
Have a look at the channel monitoring the moisture of the plant in my office based on one of the examples:
I use the status field to hold the output of a MATLAB analysis that analyzes the data and finds out where the value currently is in terms of the previous data. If the moisture value is low with respect to the previous data, it writes "Dry" to the status. If the moisture value is high, it writes Wet, and so forth. That way I don't have to keep a standard calibration.
But I could write it directly from the soil monitor device controller if it had the calibration data written on it.
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