Calc & Events Settings Screen (version 23)

Service Settings

• Delayed Start Time (seconds) - a general delay from when the service starts until calculations/events are evaluated
• Destination Historians - a comma delimited list of historian machine names where calculations will be written to
• AssetInstanceCount Read Interval (seconds) - the frequency at which the service evaluates the total number of all asset instances for each asset type to be used in the 'AssetInstanceCount' function
• Property Read Interval (minutes) - the frequency at which the service evaluates the properties of each tag to be used in the 'Property' function 
• Check for New Assets Interval (minutes) - the frequency at which the service checks for new assets that have come online
• Views Service Reconnect Delay (seconds) - the frequency at which the Calculation service tries to reconnect to the Views service after a disconnect
• Max backfilling calculations - a throttling mechanism used to limit the max number of calculations that are permitted to backfill simultaneously

Events Database Settings

• Provider - the method for storing the Events database
  1. SQLite - by default, events will be stored in C:\ProgramData\Canary\Events\CanaryEvents.sqlite
  2. SQL Server - events will be stored in a SQL database determined by the remaining parameters. (See Storing Events in an External SQL Database)
• Server - the machine name of the SQL server that will store the events
• Name - the name of the database in which the events table will be created
• User/Password - the credentials used to authenticate and write to the SQL database
• Is Domain User - determines if the configured user is a domain user