Field value from log data
fh( fieldno, seconds )
Return the field value from the log data, from seconds ago.
Description
fh( fieldno, seconds )
This function returns the logged value of a given field, from seconds ago. If the field is configured for faster logging than the default 10 minutes, the fh function will attempt to fetch the data from the 'fast log' buffer.
If no data can be found, the function will return 0.
This function is available in firmware 21060101 and newer
Parameters
fieldno | Field number (1 through 90) |
seconds | Number of seconds back in time from where the data is fetched |
Return value
Returns the value from the log buffer.
If no data can be found, the function returns 0.
Example usage
fh(15, 3600)
The above returns the data from field 15, 1h ago