AgeWatchdog Row Details: Timing Configuration tab
- Last UpdatedApr 24, 2025
- 3 minute read
The Timing Configuration tab of the ageWatchdog Row Details dialog box is used to configure the sampling interval, the time qualifier span, and demand polling for the record. The Age Watchdog application will check the timestamp of the telemetered point associated with the record as frequently as the sampling interval specified in this tab.
The timestamp of the Monitored point is compared to the current time, and the difference is compared to the configured time qualifier span. If the difference between the current time and the point's timestamp is greater than the time qualifier span, the point is considered suspect. If Demand Poll has been enabled, a demand poll is issued to the remote that owns the Monitored point.
Notes: The sampling interval will be derived from the sum of the Sampling Interval Hours and Sampling Interval Minutes. The time qualifier span will be derived from the sum of the Time Qualifier Hours and Time Qualifier Minutes in seconds.
Do not configure too many points with small sampling intervals. The processing will
impact system performance
Every minute, the timestamp of the Monitored point is checked to see if has been updated until the Demand Poll Timeout has expired. Once the Demand Poll Timeout has expired, the monitored point is considered old; ageWatchdog will respond depending on alarm and event configuration.
Notes: The timestamp of the Monitored point is checked every minute by default, if the sampling interval is set to 0. As a result, the remote of the configured point and the point itself will be staled
every minute if the time qualifier span is also left at 0.
Do not set the time qualifier span to be shorter than the remote polling frequency. For more information on polling
frequency, refer to Connection table and Remote table.
Items on the Timing Configuration Tab of the ageWatchdog Table
|
Item |
Description |
|---|---|
|
Sampling Interval Hours |
Enter a positive number to indicate the number of hours you want ageWatchdog to wait between samples of the monitored point. |
|
Sampling Interval Minutes |
Enter a positive number to indicate the number of minutes you want ageWatchdog to wait between samples of the Monitored point. |
|
Time Qualifier Hours |
Enter a positive number to indicate the acceptable number of hours that can elapse before ageWatchdog will consider a point stale. |
|
Time Qualifier Minutes |
Enter a positive number to indicate the acceptable number of minutes that can elapse before ageWatchdog will consider a point stale. |
|
Demand Poll Enable |
Select this checkbox if you want to enable Demand Polling when a Monitored point becomes suspect. |
|
Demand Poll Timeout Minutes |
Enter a positive number to indicate the acceptable number of minutes that can elapse before a Demand Poll is considered a failure. |
Notes: Do not select Demand Poll Enable if the remote for the Monitored point does not support demand polling.
The Age Watchdog application issues a single demand poll to a remote. Retries are handled by standard Omnicomm processing.