Change the sample rate of a data log

Change the sample rate of a data log

Change the sample rate of a data log to change how often the data log collects tag values, in milliseconds, on the HMI device. For example, to collect data every 30 seconds, specify 30,000 milliseconds as the sample rate. The default sample rate is 1,000 milliseconds or every second. Valid sample rates range from 500 milliseconds to 60,000 milliseconds.
To change the sample rate of a data log
  1. In the
    Project Explorer
    , expand the
    Data Logs
    folder and double-click the data log. The data log opens in the
    Data Log
     tab.
    TIP:
    Right-clicking the data log in the
    Data Logs
     folder and clicking
    Open
     opens the data log.
  2. In the box after
    Sample Rate
    at the top of the data log, select how often the data log collects data. For example, select
    500
    ms to have the data log collect data every half second.
    TIP:
    Tips:
    • Changing the sample rate causes previously collected data to no longer appear in the data log when the project downloads again.
    • If there is no change to the sample rate, log duration, or number of tags in the data log, previously collected data in the data log remains unchanged when re-downloading the project to the HMI device.
    • The
      Sample Rate
      box has a red outline if it does not contain a valid entry.
    • The data log contains tag values with the specified sample rate from all controllers.
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