Rockwell Automation 1756-HIST2G FactoryTalk Historian ME 2.2 - Manual (Page 301)

G • T ROUBLESHOOTING
291
Snapshot data points
displayed on the
Current Data page
contain timestamps
that are not being
updated: Check the status of Data Collection on the Home page.
Navigate to Time Source > Controller in the web interface.
Check for a message that indicates that data collection has
discarded data.
If Data Collection status is “Running”, check the Collection
Rate in the System Status section in the left navigation bar.
„
Ensure that the Collection
Rate is zero; this confirms
that Data Collection is not
collecting data.
„
Go to the Web Diagnostics
Firmware tab, and check
the Data Sever page. N/A
indicates an error state.
„
Reboot the module.
„
If Data Collection stops
again, go to the Configure
Historian tab, and click
Data Storage. Ensure that
the Archive Disk Threshold
and Archive Usage Thresh-
old are still valid. If these
thresholds have been
reached, wait for the system
to process overflow events
and return to a state that
allows you to restart Data
Collection.
„
If the Collection Rate is not
zero, check the status of the
Data Server on the Home
page.
„
If the Point Server status is
“Stopped” or “Error”,
reboot the module.
If the Data Collection status is “Stopped”, go to the Data
Collection page and restart Data Collection.
A single point has not
collected data for a
significant time
period:
„
Check the point configuration on the Point Property page.
„
Ensure that the scan rate is not set too low, and ensure that
the Exception and Compression values are configured
properly for the point.
Data Collection
Symptom Solution