PyScada Operations Extension

This is a extension for PyScada to do operations on data.

What is Working

• define a master operation in de operation device configuration (see below)
• define a second operation in the operation variable configuration (see below)

What is not Working/Missing

• Documentation

Master operation

A master operation of a operation device allows to define a mathematical operation on other variable to assign virtual values to new variables (assigned to this device). The library used behind is simpleeval. The operation should use a defined format :

• use the operators, functions and if expresions as allowed by simpleeval.
• refer to a variable last value using variable(id)
• refer to a variable last timestamp using variable(id, type="get_last_timestamp")

Installation

• pip install https://github.com/clavay/PyScada-Operations/tarball/main
• in order to move you CalculatedVariables to AggregationVariables you need to install this plugin before running the pyscada migration 0108.
• in order to see the aggregation protocol, you need to have the last settings.py version which add the aggregation app to INSTALLED_APPS. Add [this lines](https://github.com/pyscada/PyScada/blob/main/tests/project_template/project_name/settings.py-tpl#L60-L65) if missing.

Contribute

• Issue Tracker: https://github.com/clavay/PyScada-Operations/issues
• Source Code: https://github.com/clavay/PyScada-Operations
• Format code before sending a pull request :

• python code using black
• django template, JavaScript and CSS using DjHTML

License

The project is licensed under the _GNU AFFERO GENERAL PUBLIC LICENSE Version 3 (AGPLv3)_. -