OK that's clear.  Thanks Jan

On 24/03/2020 13:08, Jan Kandziora wrote:
Am 24.03.20 um 11:03 schrieb Mick Sulley:
There have been times when using the owhttpd interface page to look at
the various temperatures I have seen 85 at some resolutions and
apparently valid values at other resolutions.

85°C isn't an error value but the power-on value.

If you get bogus 85°C readings, check the power to the sensors, and also
the bus for shorts.


Does it therefore make
sense when reading values within my program to check for a valid read at
12 bit (my normal resolution) and if it is not valid to then check for a
valid value at lower resolutions?

I do set /simultaneous/temperature and sleep 1 sec at the start of the
loop,

Don't mix [/uncached]/<id>/temperature[X] and
/simultaneous/temperature. Use the latter only in combination with
[/uncached]/<id>/latesttemp


Will this increase the robustness of the system or is it just an added
complication for no real benefit?

Mixing both the single-target and the simultaneous method on the same
bus has no benefit but a negative impact.

The only reason to use the single-target method is when your sensors
aren't powered.

Kind regards

        Jan


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