Eclipse 4diac

Enhancements and Fixes in 4diac IDE Type Refactoring & Package Management Improved type rename support: Preserved error markers and STRUCT_DEMUX visibility during type renames Added quick fix to align package names with the folder structure ... [More] Improved connection handling during refactoring: Added recursive connection deletion Merged compatible connections during reconnect Preserved marker information while simplifying marker cleanup Build & Export Improved incremental export performance by avoiding unnecessary exports Triggered full exports when relevant source files are removed Fixed export builds to only process existing files Editor & UI Improvements Improved alignment of type information fields Enhanced scrolling behavior in property sheet tables on Windows Fixed rendering of member access tables Improved Bulk Editor selection handling Moved member access viewer into its own package Improved project creation by decoupling it from the UI General Improvements Consolidated Plant Hierarchy saving and replaced printStackTrace with proper logging Updated GitHub Actions dependencies Enhancements and Fixes in 4diac FORTE Management Commands Refactored management command processing by separating command parsing from execution Simplified command handling with improved response management and cleanup methods Enhancements and Fixes in 4diac Documentation XML Schema Support Added an XSD for Adapter Types Improved reuse of common XML schema definitions through shared attribute groups Many thanks to all contributors for their work and their feedback! [Less]

Enhancements and Fixes in 4diac IDE Bulk Editor Added a prototype Bulk Query Language Converted the Bulk Editor into a multi-page editor Improved handling of error markers during save operations Refactoring & Type Management Added package ... [More] rename refactoring support Added type rename button integrating with refactoring workflows Introduced processor-based package rename refactoring with Structured Text participation Added package proposals in rename dialogs Extracted rename handling into dedicated helper classes Added extensive test infrastructure and regression tests for type and struct renaming Structured Data & Libraries Added additional tests for STRUCT_MUX, F_MOVE, and struct rename scenarios Updated F_LOWER_BOUND and F_UPPER_BOUND function blocks and moved them into the arrays package Improved standard library handling during p2 updates Improved library manager security and GitLab downloader security Enhanced library discovery and version selection support Structured Text Editor Fixed type resolution issues for function call arguments Fixed exceptions during standard function lookup Validation & Property Editing Improved validation of unused instances with adapter connections Fixed editability handling for VAR_IN_OUT property sheets Improved refresh handling for member access viewers UI & Editor Improvements Updated shadow rendering to newer Draw2d APIs Fixed column ordering in internal variable sections Corrected comments and documentation for event-related function blocks Build & Platform Started restricting access to internal plugin APIs Updated versioning for the 3.3 development cycle and 3.2 maintenance branch Removed obsolete GitLab settings and resolved various warnings Enhancements and Fixes in 4diac Documentation XML Schema Support Introduced a first Data Type XSD for 4diac IDE XML files Many thanks to all contributors for their work and their feedback! [Less]

Enhancements and Fixes in 4diac IDE ECC & Replay Debugging Added evaluator model breakpoints for ECC debugging Added graphical outline support for the ECC editor Enhanced replay debugging: Event highlighting and comparison visualization ... [More] Navigation between highlighted events Timeline comments with add/remove commands Keyboard shortcuts Improved undo/redo support Better selection handling and event positioning Validation & Quick Fixes Added validation for unused pins in composite FBs and subapplications Added quick fixes to automatically remove unused pins Editor & UI Improvements Improved initial value editor behavior Updated coloring and usability of editable pin properties Added FBT macro support to the AsciiDoc preview Fixed NPE during ECC transition dragging Type System & Refactoring Fixed type name refresh issues Replaced obsolete refactoring update edits Reduced unnecessary marker updates and duplicate markers Improved marker handling performance Documentation & Release Maintenance Updated integrated documentation to the latest 3.2.x branch Updated dependencies for the 3.2 release Build & Maintenance Updated CodeQL integration Added missing workflow permissions Removed unnecessary stream creation and performed various cleanup refactorings Enhancements and Fixes in 4diac FORTE OPC UA Fixed multiple OPC UA issues: Memory leak in logger handling Incorrect variable handle usage Wrong type mapping for UA_Byte Out-of-bounds access during method initialization Enabled OPC UA builds on Linux CI workflows Switched to modern find_package integration for open62541 Runtime Robustness Fixed use-after-free in GEN_CSV_WRITER Fixed buffer overflow in the FBDK ASN.1 layer Fixed illegal casts in several runtime components Improved sanitizer configuration handling Data Type Handling Fixed BCD conversion issues for larger target data types Corrected 64-bit literal handling in tests Fixed floating-point conversion related casts CI & Maintenance Updated CodeQL integration Added required workflow permissions Enhancements and Fixes in 4diac FBE Release Alignment Updated to Eclipse 4diac FORTE 3.2 release components. Many thanks to all contributors for their work and their feedback! [Less]

This release introduces major feature upgrades and optimization across the entire ecosystem, most notably: Replay Debugging: A brand-new framework allowing exact, step-by-step reproduction of application runs from FORTE traces or manual events ... [More] , complete with parallel branching timelines. IDE UI & Usability Overhaul: A new low-clutter visual grid, modernized ECC and Interface editors matching IEC 61499 color semantics, and smoother transition splines. Runtime & Performance Boosts: 4diac FORTE now features reduced binary sizes, faster floating-point formatting, native ANY_STRUCT support, and a modularized OPC UA feature layer. Explore the Full Details For a complete, in-depth breakdown of every single new feature, validation rule, and dependency upgrade in this version, check out the official details page: Eclipse 4diac 3.2 New and Noteworthy [Less]

Enhancements and Fixes in 4diac IDE Release & Documentation Updates Updated the Splash screen, Intro pages, and official Documentation for the 3.2 Release. Reworked and enhanced the “What’s New” page and corrected tutorial and ... [More] table-of-contents links. Deployment & Debugging Tools Fixed an issue in the deployment evaluator where fake time was written to devices after event execution; it is now correctly set beforehand to ensure exact timing sync. Polished the replay debugging tools UI by assigning distinct colors to columns and cleaning up overall aesthetics. Ensured original events are marked as read-only during replay sessions. Importing & Type Management Fixed an issue where missing parameter types in devices, resources, or segments resulted in a null type; they now default to ANY. Reworked the importer’s type lookup to enforce the creation of error data types when needed, adding proper container variable declarations. Cleaned up the parameter handling logic for devices, resources, and segments within the importer. Ensured the TypeLibrary is completely cleared when a project is closed. Model & Serialization Fixes Fixed an issue where ECTransition comments were incorrectly derived and lost during model copying (ECoreUtil.copy()). Harmonized how transition comments are parsed and serialized in XML using a centralized approach. Fixed a date typo bug present in Client blocks. Preserved member access pin attributes automatically during Function Block updates. Refactoring & Maintenance Refactored rename change logic into a dedicated helper class to streamline code reuse. Added explanatory comments for how old names are utilized within the dependency updater. Enhancements and Fixes in 4diac FORTE OPC UA Integration Upgraded the integrated open62541 stack to version 1.5.4. Refactored the OPC UA Event layer to natively support the open62541 v1.5 API. Regenerated the OPC UA data types inside the dedicated 4diac namespace for system testing. Many thanks to all contributors for their work and their feedback! [Less]

Project: Strengthening Refactoring Quality through Automated Testing Contributor: Dimitris Kalligaridis Organization: American College of Greece, Athens, Greece Field of Study: IT, specializing in Intelligent Systems and Automation (Senior) Mentors: ... [More] Michael Oberlehner and the Eclipse 4diac Community About Me Hi, I am Dimitris, a senior student at the American College of Greece, graduating this summer with a BSc Hons in IT, specializing in Intelligent Systems and Automation. Last summer, I interned at Amazon as a Software Development Engineer in the Devices OS Security team, and this summer I am excited to be participating in Google Summer of Code 2026 with Eclipse 4diac. [Less]

Enhancements and Fixes in 4diac IDE UI & Property Sheet Enhancements Added a member access property sheet to the instance section and refactored the member access tree viewer into its own dedicated class to accommodate struct pins. Harmonized ... [More] the look and feel by enabling the “Edit Interface” sections for standard FB instances, creating clear structural separation between untyped SubApps and instance sheets. Shifted the BulkEditor context menu to leverage native Eclipse infrastructure and disabled the auto-layouting context menu when the selection is empty. Validation & Modeling Fixes Eliminated false-positives in unused instance validation by ensuring the check confirms whether an internal FB belongs to an FB network. Restricted the HTML preview feature to trigger exclusively on read-only files. Fixed an undo-command bug to properly restore connections after a structural block has been deleted. Replay Debugging & Timeline Features Introduced a new state comparison view along with its associated handling commands. Added search capabilities directly within debugging timelines. Added capabilities to delete specific timelines and event markers. CI/CD & DevOps Implemented a automated GitHub workflow to automatically tag and flag inactive issues and pull requests as stale. Enhancements and Fixes in 4diac FORTE Testing Infrastructure Enforced the IEC 61131-3 module as a mandatory requirement when running tests, introducing force options and clear log diagnostics for dependent blocks like GEN_F_MOVE. Resolved several memory leaks in the test suite by ensuring proper resource and global fixture initialization and deinitialization. Enhancements and Fixes in 4diac Documentation Redesigned and cleaned up the main documentation overview page, streamlining text by grouping technical topics into highly legible tables and resolving broken layout links. Improved and expanded the project deployment documentation. Enhancements and Fixes in 4diac FBE OPC UA Support (open62541) Refactored the open62541 version 1.4 recipe to introduce integrated support for Alarms & Conditions. Updated the open62541 recipe to version 1.4.16, enabling the alarms feature by default. Introduced a new recipe for open62541 version 1.5. Core Build Dependencies & Runtime Sync Synced the internal FORTE dependency to align with the current release branch. Upgraded core underlying libraries across the build recipes: boost updated to 1.91.0-1 libmodbus updated to 3.1.12 libpcap updated to 1.10.6 libressl updated to 4.3.2 zlib updated to 1.3.2 Many thanks to all contributors for their work and their feedback! [Less]

Project: Enhancing Execution Control Chart ECC Experience Contributor: Vikash Kumar Sinha Organization: Sant Longowal Institute of Engineering and Technology (SLIET), Punjab, India Field of Study: Computer Science (3rd Year) Mentors: Alois Zoitl and ... [More] Eclipse 4diac Community About Me I’m Vikash Kumar Sinha, a 3rd-year Computer Science student from Sant Longowal Institute of Engineering and Technology (SLIET), Punjab, India. I’m passionate about open-source development and building robust industrial automation tools. This summer, I’m thrilled to be contributing to Eclipse 4diac as part of Google Summer of Code 2026, focusing on enhancing the ECC (Execution Control Chart) editor’s user experience. [Less]

The final release is scheduled for June 10, 2026. Information on the changes is available on the New and Noteworthy pages. Testing of the current development branches is encouraged to assist in the final stabilization phase. Please report any issues via our GitHub issue trackers.

Enhancements and Fixes in 4diac IDE Validation & UI Enhancements Added validation warnings for unused FB/SubApp instances and optional warnings for multiple output event connections. Refreshed block styles with new fill colors (ice blue for ... [More] typed blocks, sand brown for untyped) and added dark mode support. Improved spline routing control points and simplified library setup wizards. Editors and Refactoring Enhanced the Bulk Editor with row-copying support, attribute filtering, and bug fixes for invalid values. Introduced a prototype AsciiDoc editor and text macro processing for Type Documentation. Fixed structural refactoring commands, folder copying bugs, and stale type library references. Connectivity & Maintenance Updated Eclipse Milo to v1.1.3 and fixed the P2 update site to include OPC UA and experimental features. Removed dead code and added a CodeQL GitHub Action workflow for security scans. Enhancements and Fixes in 4diac FORTE New Function Blocks & Library Enhancements Added E_D_FF_ANY to allow data latching for any data type instead of just booleans. Introduced LTIME variants for standard timer blocks (FB_TOF, FB_TON, FB_TP). Upgraded E_TP pulse timers to use precise rising-edge triggering (E_R_TRIG). Implemented standard array handling blocks (F_LOWER_BOUND, F_UPPER_BOUND, F_LEN_ARRAY). Testing & Bug Fixes Created a dedicated forte_systemtest executable to separate system tests from regular runtime builds. Added delegate connection tests and fixed test-suite memory crashes caused by uninitialized testing blocks. Fixed data casting and string copying errors inside the Modbus communication layer. Added a CodeQL analysis workflow to check incoming pull requests for bugs. Many thanks to all contributors for their work and their feedback! [Less]