Philosophy

Model

A Category:Model implement the concrete logic and interface to the database.

Example

• Ratio of 2 child channels

Channel type

The channel type is based on a model and describes use cases and attributes.

Example

(based on Ratio)

• Ratio calculator calculates the raw ratio of 2 child channels
  
• Percentage calculator multiplies the raw ratio of 2 child channels by 100 to get %

Channel

A channel is a concrete instance of a channel type.

Example

(based on Percentage calculator)

• Performance ratio of an inverter
• Disk usage of a server
• ...

Channel hierarchy

The channel hierarchy organizes all channels and links them together.

Here you define for calculated channels the child channel(s) where the data to use come from.

Example

• Performance ratio of an inverter
  • Pac AC Power
  • Pdc DC Power