NOA Bus

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🚧 Work in Progress

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... central element of the NOA architecture on the edge ...

... all apps read and/or write to the NOA Bus ... speak the same language (protcol) ...

Main operations

• Discovery -- provide information about all available variables, especially: ID, data type
• Subscription -- get values for a given variable ID
• Set values -- write a given value to a variable ID
• Call a method -- may require input values; may return output values

Supports the following basic data types:

• Numbers (integer and floating point),
• Boolean values (TRUE and FALSE),
• Text (Strings in UTF-8),
• Date, Time, DateTime, Duration`,
• Blob -- any content; producer and consumer must agree on the contents

Optional data

• min/max values as applicable e.g. for numbers
• Enums -- sent as Number or Text -- tbd.

For the protocol exist various bindings/libraries

• Go language -- used by many apps e.g. OPC UA Communication or Data Mapper
• C/C++ -- mainly used for Codesys Communication, IEPE Sensor data
• Python -- used for machine learning applications and ADS Communication

See the specification ...