Customizing the Schedulers
The following editable schedulers are provided with ThingWorx Apps:
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Scheduler
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Description
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PTC.Factory.StatusEvaluationScheduler
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Used for calculating the status of a piece of equipment. It runs every minute. (This scheduler is disabled when subscription-based status calculation is enabled.)
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PTC.Factory.MidnightDeviceDiscoveryScheduler
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Used to automatically discover devices for each connected server. It runs daily at midnight. You can also discover devices for a server as needed from the Controls Advisor.
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PTC.Factory.MidnightPurgeWeekOldHistoryScheduler
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Used to purge all historical sensor data that is older than one week. It runs daily at midnight. The age of the data to be kept after each purge can be configured. If all historical data needs to be preserved, disable this scheduler.
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PTC.SCA.SCO.KPIScheduler
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Used for calculating KPIs. It runs every minute. For more information, see Changing the KPI Calculation Schedule.
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These schedulers can be enabled or disabled. You can customize each scheduler by configuring its launch schedule. The PTC.Factory.MidnightPurgeWeekOldHistoryScheduler can also be customized by setting the age of data to keep after each purge.
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Customizations made to the schedulers are not retained during an upgrade, and will need to be re-implemented after the upgrade is complete.
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Enabling or Disabling a Scheduler
To enable or disable a scheduler:
1. Open the scheduler in ThingWorx Composer.
2. Click Edit and select General Information.
3. Select the Automatically Enable Timer on Startup checkbox to enable the scheduler, or clear the checkbox to disable the scheduler.
Configuring the Launch Schedule for a Scheduler
To configure the launch schedule for a scheduler:
1. Edit the scheduler in ThingWorx Composer.
2. Under General Information, modify the Schedule field to set the launch schedule for a scheduler.
The Schedule property uses CRON format. For more information on CRON, see https://docs.oracle.com/cd/E12058_01/doc/doc.1014/e12030/cron_expressions.htm.
3. Click Save to save the modified scheduler.
Setting the Age of Data to Keep After Each Purge
To set the age of the data to keep after each purge:
1. Edit the PTC.Factory.MidnightPurgeWeekOldHistoryScheduler in ThingWorx Composer.
2. Under Properties and Alerts, click 
next to the value for the TimeCutoff property to set the age of the data to be kept after each purge.
next to the value for the TimeCutoff property to set the age of the data to be kept after each purge.The required format is a combination of numbers and letters: w (weeks), d (days), h (hours), m (minutes), and s (seconds). For example, to purge all data older than 3 and a half days, enter 84h or 3d 12h.
Case, spaces, and order do not affect the value.
3. Click 
to set the property value.
to set the property value.4. Click Save.