Attribute Semantics - Allen-Bradley 1444-TSCX02-02RB User Manual

Table 199 - Instance Attributes (continued)
25 Get V FFT Line
Resolution
26 Get V FFT Window
Function
28 Get V FFT Line Value
Detection/
Scaling

Attribute Semantics

Waveform FFT Storage Format
A bit-wise control for the storage of the Normal CM Data.
Table 200 - Waveform FFT Storage Format
Bit
0
1
2
3
4
5
6
7
Single setting applies to all stored Normal CM data (Trend, Alarm, and
Transient) for all channels.
This parameter has been made available within the configuration such as to
permit (future) Smart memory allocation.
Currently the internal storage is fixed as float (shown in bold previously and
represented as a return value of 0x11).
TWF/FFT data is always returned as IEEE Float/Real values across the
network.
Rockwell Automation Publication 1444-UM001D-EN-P - June 2018
SINT Defines the FFT line
resolution that is used
in the Normal CM, FFTs.
SINT Definition of window
function for FFT signal
processing.
SINT Allows line/bin values
to be returned scaled as
Peak, Peak to Peak, or
RMS.
Description
FFT as Float
FFT as 16 bit
FFT as 8 bit
Reserved
Waveform as Float
Waveform as 16 bit
Waveform as 8 bit
Reserved
CIP Objects Appendix A
FFT resolution options
FFT window options
0: Peak
1: Peak to Peak
2: RMS (default)
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