Swinging door deadband for delta storage

A swinging door deadband is the percentage of deviation in the full-scale value range for an analog tag. The swinging door (rate) deadband applies to delta storage only. Time and/or value deadbands can be used in addition to the swinging door deadband. Any value greater than 0 can be used for the deadband. A value of 0 indicates that a swinging door deadband will not be applied.

The swinging door deadband is essentially a rate of change deadband, based on changes in the slope of the incoming data values. For example, specifying a swinging door deadband value of 10 percent means that points will be stored if the percentage change in slope of the consecutive data values exceeds 10 percent. The percentage of allowable "swing" in the data values gives this type of deadband its name.