Rockwell Automation Publication 1444-UM001D-EN-P - June 2018
337
CIP Objects
Appendix A
Extract from the FFT header the number of samples per revolution and the
encoded RPM (RPMe) values.
samples_per_rev = the first byte of the
SamplePeriodInSec
value
RPMe = the last three bytes of the
SamplePeriodInSec
value
Calculate the FMAX, in orders, as follows:
Calculate the FMAX, in Hz, as follows:
FMAX (orders) =
(Nr - 1)* samples per rev
2.56* Nc
FMAX (Hz) =
FMAX (orders) * RPMe * 100
60