According to the BACnet protocol documentation:

Indicates the desired load shedding. If the choice for Requested_Shed_Level is PERCENT, the value of Requested_Shed_Level is interpreted as a requested percentage of Full Duty to which the device is to attempt to reduce its load. The determination of the Full Duty rating (or some alternative baseline power usage) is a local matter. It may be determined from the Full_Duty_Baseline property, if present. If the choice for Requested_Shed_Level is LEVEL, the value of Requested_Shed_Level is used to set a preconfigured level of load shedding. The Load Control object's available shed actions are described by the Shed_Level_Descriptions array and are mapped to the BACnet visible values of Requested_Shed_Level by the Shed_Levels array. The SHED_INACTIVE state shall always be represented by the value 0, which is not represented in the Shed_Levels or Shed_Level_Descriptions arrays. If Requested_Shed_Level choice is AMOUNT, the value of Requested_Shed_Level shall be interpreted as an amount, in kilowatts, by which to reduce power usage. Load Control objects are required to support the LEVEL choice. Support for the PERCENT and AMOUNT choices is optional. This allows a master to be guaranteed the ability to write to the Load Control object by using the LEVEL choice. If a load control command has been issued, and execution of the command has completed, Requested_Shed_Level shall be reset to the default value appropriate to the choice of Requested_Shed_Level used for the last command.

Property requestedShedLevel of object loadControl can be read and written using a single IOTag.

Text Parameters

Numeric Parameters

Tag Value

One of the following data types:

•A 32-bit unsigned integer.

•A character string containing an XML with a value of type <Unsigned>.

•A 32-bit floating point number.