Welcome to the main site of the open SCADA project

OpenSCADA is an open implementation of SCADA (Supervisory Control And Data Acquisition) and HMI (Human-Machine Interface) systems. The main properties of the program are: openness(Opens internal link in current windowGPL,GFDL), modularityscalability and multiplatform. Read more here or learn functional characteristics of the program here.

The site contains materials about OpenSCADA and it serves for granting information on the project, and also for the program development process control, together with the Opens external link in new windowproject's Wiki-resource.


Latest news:

Thursday 15. August 2019

The root page frame of the main elements library of the user interface is significantly expanded and documented

The frame "Root page" is a base element of most interfaces built in OpenSCADA and it was completely documented and significantly expanded for:

  • dynamization of forming the signal object buttons from one base button, with the result possibility of forming very number of signal objects, up to 100 for short names.
  • dynamization and unification of the types of view to their abstract encoding as "viewN", with the result possibility to appoint any other mean to the type of view.
  • correct cleaning the control panels container.

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Monday 12. August 2019

Analysis of the memory consumption and efficiency of the UI module WebVision in the busy environments

The module UI.WebVision was observed in extra memory consumption on a real big task working on Debian 9.

There were performed several actions of measuring about this module work on different Debian versions: 7, 8, 9, 10; where we have seen the clear degradation of effectivity of the memory allocation on Debian versions from 8.

Contacting the Debian community we revealed this problem as a disadvantage of GLibC in implementing memory arenas, which can be highly fragmentated in program environments what actively recreating the threads, due to linking the arenas to threads.

So, to fix this behaviour, we need to set the environment variable MALLOC_ARENA_MAX=1, what was be done for all live disks of the automation Linux distributive.

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Monday 12. August 2019

The graphics group frames of the main elements library of the user interface appended for the graphic parameter calculation

The element implements a dialog of user calculation of the selected graph parameter for the graphically visible data. The user is given an option to select calculations from the built-in library, the privileged user ("root" or in the "ITW" group) has the opportunity to edit or write their own calculation procedure.

In general, the built-in library currently contains the following functions of the user calculation:

  • Sum, at hour.
  • Average and range.

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Thursday 25. July 2019

Debian Linux 10

At releasing the Debian Linux version 10 the OpenSCADA project was adapted to this version for:

- creating the proper building chroot-archives;

- building up the OpenSCADA packages and adaptation in general to build OpenSCADA in the environment of GCC 8 and Qt 5.11;

- expanding the Automation Linux repository and building the new Live disks;

- fixing OpenSCADA for executing the binaries built by GCC 8;

- expanding the automatic builder for building the packages and Live disks.

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Wednesday 01. May 2019

Completion of revision of the virtual-demo projects

All virtual-demo projects and their libraries were completed in whole revision of their documentation and database files, for: two styles-themes support, removing Cyrillic symbols from identifiers, unification the identifiers and fixing most texts.[more]

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