Data File Format

This topic provides the format of the content in a text file that contains tag data extracted by the Historian ETL Extract tool. Each line in the text file contains the following parameters, separated by commas:

Parameter	Description	Valid Values
Time	The time at which the data is captured. It is displayed in the following format: <epoch format>:<nanoseconds, human-readable> For example, if the value is 1601890328:76000000, then: 1601890328 indicates the time in the epoch format. 76000000 indicates the time in nanoseconds, human-readable. The value after the colon is greater than 0 only if the time resolution of the tag is milliseconds or microseconds.	N/A
Tag name	The name of the tag for which the data is captured.	Any tag that exists in the destination Historian server Note: If the AddTagAutomatically parameter is set to True, when you add a tag that does not exist in the Historian server, it will be created.
Data value	The value of the data that is captured.	N/A
Data type	The data type for the value that is captured.	short int float Double Single Byte String
Quality	The quality of the data that is captured.	GOOD BAD