Rockwell Automation Publication 1444-UM001D-EN-P - June 2018 481
CIP Objects Appendix A
25 Number of
Averages
SINT Identical control to the control used in the Normal CM Data
Object (0x30A).
26 Waveform Record
Length
SINT Defines the number of samples in the Advanced CM, waveform.
27 FFT Line Resolution SINT
Identical control to the control used in the Normal CM Data
Object (0x30A), but with additional indices. See Table 227 on
page 481.
28 FFT Window
Function
SINT Identical control to the control used in the Normal CM Data
Object (0x30A).
29 FFT Line Value
Scaling
SINT Allows line/bin values to be returned scaled as Peak, Peak to
Peak, or RMS [0 Peak, 1 Peak to Peak, 2 RMS].
30 Pad INT Used to align data to a 32 bit boundary.
Instance 4 (Channel 3)
32 Enable BYTE A bit-wise enable control.
33 Number of
Averages
SINT Identical control to the control used in the Normal CM Data
Object (0x30A).
34 Waveform Record
Length
SINT Defines the number of samples in the Advanced CM, waveform.
35 FFT Line Resolution SINT Identical control to the control used in the Normal CM Data
Object (0x30A), but with additional indices. See Table 227 on
page 481.
36 FFT Window
Function
SINT Identical control to the control used in the Normal CM Data
Object (0x30A).
37 FFT Line Value
Scaling
SINT Allows line/bin values to be returned scaled as Peak, Peak to
Peak, or RMS [0 Peak, 1 Peak to Peak, 2 RMS].
38 Pad INT Used to align data to a 32 bit boundary.
Table 227 - Record Length
Index TWF Samples Decimation
Base FFT
Lines
(1)
(1) The Base FFT Lines represent the size of the raw processed FFT and are the number of lines returned if no adjustments are made
for decimation and filtering. Control of application of relevant factors for the applied decimation and filtering is provided in the
SpecialRequest member of the CM Record Request structure (Table 230
).
Decimation
None Alternate
Path
(2)
(2)
Or if -60 dB filter is applied (Aeroderivative Measurement Type)
Primary
Path
(3)
(3) And the standard -24 dB/octave filter is applied.
8 65536 - - - -
7 32768 12800 14400 8000 4800
6 16384 6400 7200 4000 2400
5 8192 3200 3600 2000 1200
4 4096 1600 1800 1000 600
3 2048 800 900 500 300
2 1024 400 450 250 150
1 512 200 225 125 75
0 256 100 112 67 32
Table 226 - Advanced CM Data Request Parameters (continued)
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