132 Rockwell Automation Publication 1426-UM001J-EN-P - August 2019
Chapter 6 Logging
Waveform Data Records
The LoggingResults. Waveform_Log Data Table, on page 396, contains the most
recent record that is read from the selected waveform file, and contains the
following REAL elements.
Element Number Tag Name Description
0 Record_Indicator Indicates the significance of the data in the record
0 = No record returned
1 = the record contains parameter values
2 = the record contains general information of the log file being retrieved, reference to each item
description in the data table;
3 = log file not found.
1 Timestamp_Date Date of cycle collection MMDDYY
2 Timestamp_Time Time of cycle collection hhmmss
3 Microsecond_Stamp Microsecond of cycle collection
4 File_ID The selected file ID
5 Total_Cycles Total cycles of the waveform file
6 Cycle_Returned The current returned cycles
7 Frequency The frequency of average cycle
8 Mag_Angle The returned value is magnitude or angle
9 Channel The channel returned
10 Order The order of returned values
11 X_(0 + Order * 32) The returned value X_(h) where X_(h) = the RMS magnitude or angle of the spectral component h. Units are
Volts, Amps or degrees, depending on the value of Channel and Mag_Angle elements
12 X_(1 + Order * 32)
……
42 X_(31 + Order * 32)
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