Rockwell Automation Publication 1426-UM001J-EN-P - August 2019 133
Logging Chapter 6
Waveform Header
If the value of Record_Indicator is 2, the LoggingResults. Waveform_Log Data
Tab l e, on page 396, returns the following information. The data type returned is
REAL, although some elements (MAC ID) are better interpreted as UINT32.
If the waveform retrieval is interrupted for more than 60 seconds, the sequence
must reinitialize by writing the Configuration.WaveformFileName Data Table
on
page 334
. Appending the filename with selection switches configured for the
next record in sequence begins the retrieval where the unit left off before the
interruption.
See Waveform Recording (M6 and M8 model)
on page 104 for more
information about waveform setup, operation, commands, related functions, and
retrieval via FTP and the native Ethernet port.
Element Number Tag Name Description
0 Record_Indicator Indicates the significance of the data in the record 2 = the record contains general information of the log file
being retrieved, reference to each item description in the data table;
1 File_ID The selected file ID
2 Waveform_Identifier_High File ID (Int16)+ Waveform Identifier(Int48)
typedef struct
{
unsigned short sFileID; //this id is used for user selection, 1…256
unsigned short sWaveformID; //the Waveform id highest 2 bytes
unsigned long lWaveformID; //the Waveform id Lowest 4 bytes
}WAVEFORM_ID;
3 Waveform_Identifier_Low
4 Revision Waveform file format revision
5 Compression Indicate compression or not and the compression type, high 8 bits is compression flag, low 8 bits is
compression type
6 Metering_Mode Metering mode, indicates that voltages are L-N or L-L
7 Mac_Address_High Mac address of power monitor - high 3 bytes
8 Mac_Address_High Low 3 bytes
9…42 Reserved Reserved for future use
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