Delta Logic Block

Description

When analyzing cumulative readings, such as energy meters, it is often necessary to look at the difference between measured values, rather than absolute values. When applied to a trended data series, the Delta* Logic Block calculates and outputs the differences between consecutive values. In this way, we can easily examine the rate of change within a meter.

Functionality

Output: Timestamps are identical to that of input data series. Values are calculated as the difference between the values corresponding to current and previous time stamps.

The schematic below illustrates the functionality of Delta logic blocks: