Configure the Flatline Watchdog JSON file

Note: For information on overriding default configuration settings, refer to Modify configuration settings.

To configure the Flatline Watchdog JSON file

1. In the %DNADataRoot%\RealTime\config\Settings directory, either create or open the RealTime_FlatlineWatchdog.json file.

2. Change the values of the following keys as described below:

   {

   "RealTime": {

   "DELAY_START_WATCHDOG_AFTER_MODE_SWITCH": "00:00:30",

   "FLATLINE_WATCHDOG_PROCESSING_FREQUENCY": "00:00:05”

   "DELAY_START_WATCHDOG_ON_STARTUP":"00:01:30",

   "FLATLINE_WATCHDOG_CHECKIN_INTERVAL_SECONDS": 90

   }

   }

3. Change the value of DELAY_START_WATCHDOG_AFTER_MODE_SWITCH to control the delay applied to records when the following occurs:

   • System mode switch

   • RealTime service startup

   • Enabling of a watchdog record

     Note: The default value is 00:00:30 (30 seconds).

4. Change the value of FLATLINE_WATCHDOG_PROCESSING_FREQUENCY to control the frequency with which the Flatline Watchdog application processes records.

   This value must be smaller than the monitored point's timeout value. For example, if a monitored point uses 30 seconds for a timeout, the FLATLINE_WATCHDOG_PROCESSING_FREQUENCY value should be less than 30 seconds.

   Note: The default value is 00:00:05 (5 seconds).

5. Change the value of DELAY_START_WATCHDOG_ON_STARTUP to control the delay applied to records when the following occurs:

   • RealTime service startup

   • RealTime service failover

     Note: The default value is 00:01:30 (90 seconds).

6. Change the value of FLATLINE_WATCHDOG_CHECKIN_INTERVAL_SECONDS to control the time at which the Flatline Watchdog process checks in to the Process Monitor.

   Note: The default value is 90 seconds.

7. Save the file.

8. Restart the RealTime service.