Cascade Historian™ : Version 5.4
	Dynamic Library Functions

`hist_enable`

hist_enable — activates data recording.

Syntax

hist_enable (hist_task[, pattern])

hist_task: The task object corresponding to the Cascade Historian. See locate_task in the Gamma manual.
pattern: The name of one or more (using a globbing pattern) histories to be acted upon. When this parameter is not specified, the default is *, to include all histories.

t (true) if successful. Otherwise returns nil and sets _last_error_ to the error string returned by the Cascade Historian.

This function reverses the effect of a previous disable, hist_disable, or HI_Disable call, so that new data values will be accepted and logged.

This function corresponds to the enable command, and the Cogent C API function HI_Enable.


hist_earliest		hist_exchange_buffer