Data Source

The source of where the value will come from.  The Data Source can be set to one of the following types.

      Value: Fixed value that can be set in configuration or from any client.

      OPC Item: Value from OPC Server Item specified in the OPC Item field.  View https://www.opcsystems.com/datasourceopcserverfast_video.htm for quick instructions on defining an OPC Item.

      Tag: Value is from another tag parameter from the same service or remote service.  The result is read only and cannot be written to.

      Calculation: Math equation with multiple tag parameters as a data source.  The result is read only and cannot be written to.  View https://www.opcsystems.com/calculations_video.htm to see how to define a Calculation.

      Year: The current year as an Integer.  Value is read only.

      Month: The current month as an Integer.  Value is read only.

      Day: The current day as an Integer.  Value is read only.

      Hour: The current hour as an Integer.  Value is read only.

      Minute: The current minute as an Integer.  Value is read only.

      Second: The current second as an Integer.  Value is read only.

      SecondToday: The total number of seconds elapsed in the current day as an Integer.  Value is read only.

      Weekday: The current weekday as an Integer.  Value is read only.  0 = Sunday, 1 = Monday, 2 = Tuesday, 3 = Wednesday, 4 = Thursday, 5 = Friday, 6 = Saturday.

      WeekdayName: The current weekday as a String.  Value is read only.

      DateTimeString: The current date and time as a String.  Value is read only.

      UTCYear: The current Universal Time Code year as an Integer.  Value is read only.

      UTCMonth: The current Universal Time Code month as an Integer.  Value is read only.

      UTCDay: The current Universal Time Code day as an Integer.  Value is read only.

      UTCHour: The current Universal Time Code hour as an Integer.  Value is read only.

      UTCMinute: The current Universal Time Code minute as an Integer.  Value is read only.

      UTCSecond: The current Universal Time Code second as an Integer.  Value is read only.

      UTCSecondToday: The total number of seconds elapsed in the current Universal Time Code day as an Integer.  Value is read only.

      UTCWeekday: The current Universal Time Code weekday as an Integer.  Value is read only.  0 = Sunday, 1 = Monday, 2 = Tuesday, 3 = Wednesday, 4 = Thursday, 5 = Friday, 6 = Saturday.

      UTCWeekdayName: The current Universal Time Code weekday as a String.  Value is read only.

      UTCDateTimeString: The current Universal Time Code date and time as a String.  Value is read only.

      UDPClientTag: Remote tag from another service that is setup for UDP Broadcast.  Value is read only.