Sensor Defintion/Support Parameters

[ericthegeek]

Status messages are typically used to report unusual conditions. When a sensor goes outside of the normal range, the responder might return a Status Type "WARNING" for STS_OVERTEMP as we discussed earlier. Then, when the temperature returns to the normal range the responder reports "WARNING_CLEARED" STS_OVERTEMP. This can asynchronously notify the controller that a sensor has returned to the normal range.

Controllers can poll sensors periodically to look for values within the normal range. Some controllers will poll every sensor periodically, while others will only read sensors when the user requests an update, for example by opening a "sensor data" window in the controller's GUI.