A discrete device's historized PV will map to which data type in Historian?

The historized Process Variable (PV) for a discrete device refers to data that typically represents distinct states or conditions, such as "on/off" or "true/false." In this context, the mapping to an integer data type is logical because integers can represent discrete values effectively. For example, a common practice is to assign 0 to indicate an "off" state and 1 to signify an "on" state.

Using integers for discrete devices allows for efficient storage and processing within the historian, as well as clear binary representation of the device's state. This method aligns with the operational need for quickly evaluating and analyzing the status of discrete devices over time.

Other data types like Float, String, and Boolean do not fit this specific mapping as well. Float is used for continuous values requiring decimal points, String is used for text data, and Boolean is generally not the primary choice for historization of discrete states in many systems since it doesn't have the same versatility or efficiency in data representation and storage as integers. Thus, utilizing an integer data type is the appropriate choice for historizing the PV of a discrete device.