Rockwell Automation 1440-DYN02-01RJ XM Dynamic Measurement Module - Manuel (Page 137)

Publication ICM-UM002F-EN-E - March 2013 137
CIP Objects Appendix B
Spectrum Waveform
Measurement Object
(Class ID 324
H
)
The Spectrum/Waveform Measurement Object models a spectrum and
waveform measurement.
When requesting the first byte of waveform or spectra data the module copies
the most recently sampled live measurement to a hold buffer where it is held
until the entire measurement is uploaded to the host, or until a new first byte
request is made. If the measurement mode is synchronous, and the channels
have the same number of orders and number of lines, then when the first byte
of the channel 0 data is requested, the module copies the simultaneous
measurements for both channel 0 and channel 1 to the hold buffer.
Class Attributes
The Spectrum/Waveform Measurement Object provides no class attributes.
Instances
There are 2 instances of this object.
Instance Attributes
Table B.38 Spectrum Waveform Measurement Object Instance Attributes
Attr ID
Access
Rule Name Data Type Description Semantics
3 Get Status BOOL Indicates if a fault or
alarm has occurred. 0 = Operating without alarms or
faults.
1 = Alarm or fault condition
exists. The Spectrum and
Waveform data may not
represent the actual field value.
4 Get Data Units ENGUNIT The units context of the
Data attributes.
This setting is determined by the
Channel Object’s
Output Data
Units attribute (see
page 128 ).
5 Get Domain USINT The domain used for the
spectrum and waveform
measurements. 0 = Frequency/Time
1 = Order/Position