Default Reason Types, Reason Categories, and Reason Trees

Building Blocks > Domain-Specific Building Blocks > Reason Code Building Block > Default Reason Types, Reason Categories, and Reason Trees

A default set of reason types, reason categories, and reason trees are provided with the reason building block.

Reason Types

Reason types are used to group reasons and are used in calculations to manage event processing. The set of reason types cannot be altered.

The following table lists and describes the reason types provided with the reason building block, along with the related event type:

Reason Type	Description	Event
Running	Used to indicate that the equipment is running.	Availability
Unscheduled	Used for reasons such as holiday, break, and planned downtime.	Availability, Loss
Down	Used to indicate that the equipment is not running.	Availability, Loss
SpeedLoss	Used to indicate that there is a speed loss.	Loss
Production	Used to indicate good production.	Production
Scrap	Used to indicate bad production.	Production
Invalid	Used to indicate invalid data.	Production

Reason Categories

Reason categories are used to provide a high-level grouping of reasons. A reason category belongs to one reason type, but a reason type can have many reason categories. Each reason category can have many reason trees. Reason categories can be added, but cannot be deleted if at least one reason tree is linked to the category.

The following table lists and describes the reason categories provided with the reason codes building block, along with their reason types:

Reason Category	Description	Reason Type
Production	Good production.	Production
Scrap	Bad production or scrap.	Scrap
Unscheduled	Time that is not in a scheduled shift.	Unscheduled
Running	Running status for equipment.	Running
Planned Downtime	Planned downtime, for example meals, breaks, or planned maintenance.	Down
Unplanned Downtime	Unplanned downtime, for example power outages or emergency stops.	Down
Changeover	Time spent changing materials or jobs.	Down
Unknown	Unknown availability fault code.	Down
Speed Loss	General speed loss category.	SpeedLoss
Small Stops	Equipment is stopped for a short period of time.	SpeedLoss
Invalid	Invalid data. This data does not appear in the user interface and is not used in any calculations.	Invalid

Reason Trees

A reason tree is a tree structure containing reasons or reason codes for a specific reason category. Each node in the tree structure can have as many children as required, and there can be any number of levels defined for the tree. Each node in the reason tree represents a human-readable label for a reason, and can be assigned to zero or many machine fault codes. A given fault code can be assigned only once in a given reason tree. Any number of reason trees can be added. There can be many reason trees for a given reason category.

The following table lists the reason trees provided with the reason code building block, and the reasons within them:

Reason Tree	Reason Category	Description	Included Reasons
Running	Running	Default reason tree for running equipment.	Running
Unknown	Unknown	Default reason tree for unknown availability fault codes.	Unknown

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