Best way for Temperature Measurement?

What is the best way to read Temperature from a sensor?

The way I understand it is that the monitor object periodically gets the value from the Temperature Sensor and then saves it in a 'bucket' - for the lack of a better word.

Once the value is in the 'bucket' I can then use GetUnitParameter to read the value from the 'bucket' but only after I checked to see if it's valid using the GetUnitParamStatus command.

What I am trying to achieve is to read the value right after it has been placed into the 'bucket' and not write my own little loop to check the bucket every x seconds. Here is some code I currently use, it's polling based but I want it to be notification based so that I only read the value when it's put inside the 'bucket'.

Code:

if GetUnitParamStatus("Local Network", 20, ptTemperature) then
begin
  Temperature := GetUnitParameter("Local Network", 20, ptTemperature);
  Delay (20);
end;

Changing the 'if' statement to a 'once' statement doesn't work. Any ideas how I can change the behaviour or can I remove the delay and have it scan on every cycle?

Ingo

 

Generally we don't like to poll things on C-Bus. The "monitors" in the touch screens, PAC and HomeGate are only there for getting data which is not broadcast onto C-Bus.

The measurement application is much better because you get the change immediately and you don't need to poll. If possible, always use the measurement application in preference to using a monitor.

 

Thanks guys. In the never ending quest to conserve bandwidth and cpu cycles one never stops looking for more efficient ways to do things. I'll remove my delay command so as to grab the new temperature value as it enters.

I actually use the HasChanged command command already but that is only further down the line where I check the major value (24.xx) of the temperature. Including the decimal (xx.73) values makes it change almost on every poll.

Ingo