Rockwell Automation Publication 1444-UM001D-EN-P - June 2018 189
Measurement Definition Chapter 4
Demand
The 1444-DYN04-01RA dynamic measurement module can serve additional
data “on demand”. Demand data is accessed by using explicit data requests to
the Demand Data Objects.
Demand data is not used in the module. It is provided as an additional data
source to software applications that offers the following advantages.
Independent Signal Source
You can define the Demand data signal source separate from what is specified
on the FFT Page. This separation allows software to access data that is
processed differently for the same channel. Differences could include
integrated vs. not integrated, differences in the sample rate or FMAX, or in the
measurement mode – asynchronous vs. synchronous.
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