| Description | Specifies the time intervals at which the data should be
fetched for this data group.
This object's value is used only when the collection
mode of the associated cdcVFileEntry is automatic (see
cdcVFileCollectMode).
A periodic timer is started for this data group when
cdcDGRowStatus is set to 'active', provided the associated
cdcVFileEntry has already been 'activated', otherwise it is
started when the associated cdcVFileEntry is finally
activated.
The time interval after which the first expiration of this
timer should occur, is calculated as follows:
(value of sysUpTime.0) +
(value of cdcPollPeriod for this entry -
(value of sysUpTime.0 - VFile activation time for the
associated cdcVFileEntry) % cdcPollPeriod)
Subsequent expirations of the periodic timer can occur as per
the value specified in cdcDGPollPeriod. This helps in
synchronizing periodic polling of the data groups with
respect to the VFile activation time.
This object's value may be modified at any time, and the
change must take effect immediately. i.e. if the periodic
timer has been started, it's expiry time may need to be
re-adjusted. |