MergenHub Fix: Clicking a top-bar button no longer shrinks the maximized desktop window to the center (dragging now starts only after the pointer moves past a threshold).
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Release notes · 3.1.23
What changed, version by version
Every upgrade is free for licensed users for the life of the license. The application checks this list once a day and shows a notice when a new version is available.
2026-09-06
The desktop app is now a true native window: the OS title bar is gone and controls are built into the app.
- Seamless window: the duplicate 'MergenHub' title is gone; minimize/maximize/close are built into the app's top bar (theme-aware), with drag and double-click-to-maximize from the bar.
- 'Open in browser' moved from a floating button to the top-right cluster (no longer overlaps content on SCADA etc.) and can be turned off from Settings > Web & REST API (locked/kiosk use).
- Maximizing no longer overflows under the taskbar (constrained to the work area).
2026-09-06
Anonymous, opt-in telemetry (trial mode only) and small UI improvements.
- Anonymous telemetry: only when UNLICENSED (trial) and ONLY with your consent, the app may send anonymous data in the background (version, approximate tag count, OS, a reproducible anonymous install id) to help improve the product. No personal/hardware info, MAC, or your project data is sent; telemetry stops entirely once a license is entered; consent can be withdrawn from Settings > License.
- Flags on the sign-in language switch (TR/EN).
- Telemetry runs in the background on the existing daily update check; if the portal is unreachable the app is unaffected.
2026-09-06
Desktop app (chromeless WebView2 window) and unlimited trial: until a license is entered, ALL features and UNLIMITED tags are available within a 2-hour runtime window.
- Desktop app: the local UI now opens in its own window without a browser bar. Desktop and Start-menu shortcuts are added.
- One-click 'Open in browser' from inside the shell (bottom-right button + right-click menu + Ctrl+B); the Administration tray opens it 'as an app' or 'in the browser' separately.
- Redesigned sign-in screen (brand colors, TR/EN, show password) with a 'Remember me' option.
- The native title bar follows the UI theme (light/dark).
- Trial mode is now UNLIMITED tags: the 500-tag cap for unlicensed runtime was removed; the only limit is the 2-hour runtime window.
- The update check gives instant feedback ('checking...', result).
- Clean install now also removes old leftover files.
2026-09-05
Single installer: licensing and trial mode. Until a license key is entered, all features are available with 500 tags and a 2-hour runtime window.
- Licensing: online activation (key) or offline activation (.mhreq request file -> portal -> .mhlic document) from Settings > License; release / move a license to another machine.
- Packages differ only by tag count (500 / 5,000 / 25,000 / 50,000 / unlimited); every feature is available in every package.
- Trial mode: unlicensed installs get 500 tags and a 2-hour runtime window per runtime start; on expiry a top-bar notice offers a one-click new window.
- Daily update check with a "new version available" balloon (per-version "do not show again").
- The BETA package and the regular package were merged into a single installer. In-place upgrades keep existing settings.
- The setup wizard shows a licensing/trial notice.
2026-09-02
The SCADA flow animation now works on every object type and on all Envest symbols.
- Pipe and polyline-pipe objects honour the flow rule directly (no need to also enable the "Flow animation" checkbox).
- The animation preview (⚡) now plays every rule assigned to an object in the design view.
- Flow direction can now be set to right/left/up/down; the pipe stripe reaches the ends.
- Direction and dash/gap settings of an animation rule were lost after saving; they are now kept.
- Pipe link ends and bend points can be dragged on the canvas (double-click to add/remove bends); ends snap to the object shape.
- Choosing "Pipe (draw)" from the palette opens the drawing tool directly.
- A "Flow" animation assigned to Envest pipe, elbow, valve and pump symbols never ran; it now flows inside the symbol shape.
- On other objects the flow stripe ignored colour/speed/direction and was invisible on the light theme; it now runs with the chosen colour and speed, clipped to the object shape.
2026-08-30
Device error state is now consistent everywhere: a device shown red in the tree is reported as faulted to OPC UA clients too.
- Short connection drops still do not make the status flag flap — the decision is based on the time of the last valid data rather than the instantaneous connection state.
- An unreachable device could report "no error" over OPC UA while the interface showed it as faulted; both sides now agree.
2026-08-27
Device status (_System) keeps publishing regularly, including throughout a communication outage.
- Device status values are republished at regular intervals even when unchanged, so a client recovers on its own if it misses a notification.
- When communication was lost, device status could stay stuck at its previous value in the OPC UA client; the change now reliably reaches the client.
2026-08-24
OPC UA values no longer drop to zero when communication is lost; the last valid value is held.
- New OPC UA project property: "Keep last value when communication is lost" (on by default).
- When communication was lost, OPC UA clients received zero as the value; the quality is now reported as "Bad" while the last valid value is held, so screens and trends no longer zero out.
2026-08-21
Immediate, accurate device status when communication is lost, plus time/type in the tag table.
- In the tag table, system rows left the Time column empty and showed the same Type on every row.
- The blue info frame in the screen editor could spill over the panels in some situations.
- When a device address (IP) was changed to an unreachable one, the error flag could stay clear for minutes; it is now raised on the first failed connection.
2026-08-18
Illustrator-style selection in the screen editor, an animation list, a richer REST client and an expanded manual.
- Animation list: every animation on the screen (template bindings included) in one panel; clicking a row locates and highlights the object on canvas.
- Data Bridge REST client gains authentication options (Basic, Bearer, API key), the PATCH method, an example-driven help section and a "send test request" button.
- The manual gains a "Koru1000 Screen Templates" chapter and coverage of the new features.
- Selection inside drawings is now stepwise: double-click enters one level, clicking outside steps back out (Illustrator flow).
- Tag fields gain a one-click "clear selection" button; long tag paths show in full on hover.
- The installer can reveal the admin password, and a generated strong password is copied to the clipboard with one click.
- The selection frame could linger across page switches and window/panel movements, spilling over the panels; it now stays aligned to the drawing area at all times.
- Single click and right-click on drawing parts could stop responding after certain edits.
2026-08-15
Device health indicator accuracy, Turkish name lookups and screen editor fixes.
- Channel and device names containing the Turkish I/i letters could cause "device not found" errors in some operations.
- Subscribing to the health tag alone did not start scanning the device; monitoring now polls the device as soon as it begins.
- In the screen editor, the selection frame could linger over the panels after panning or zooming.
- The device health indicator (_NoError) could report "no error" on some protocols even when communication was down; it now reflects actual data flow.
2026-08-12
Selection frames spilled over the panels in the screen editor.
- When a part of an object was selected, its frame spilled over the left palette and right property panel as the object neared the edge; it is now clipped to the drawing area.
- The part name label also stays inside the drawing area: it moves below the object when there is no room above, and disappears when the selection is cleared.
2026-08-09
The AI (MCP) connection can now use the whole system; three permission holes closed.
- 18 new tools for the AI connection: service start/stop and crash recovery, audit log, settings, project export and import, tag discovery from a device, user and permission management.
- New permission groups: Service Control, Audit Log, Settings, Users - each grantable on its own.
- Privilege-escalation guard on the new user management tools: the AI cannot grant any permission its token owner lacks; such a request is refused, not silently trimmed.
- Project import previews by default: nothing changes unless you explicitly confirm.
- Disabling a user did not fully cut their AI access: a few tools that need no permission kept working.
- Two tools (set animation, place on pipe) belonged to no permission group and could never be called.
- In the well and booster tag pools the open/closed status always read 0 (bad scaling).
- The screen wizard now warns which calculation a station parameter left at 0 will zero out.
2026-08-06
Pipe stretching and layer order fixes.
- Pipes now have a direction option: Automatic, Horizontal or Vertical.
- An explicit Unrestricted / Restricted switch for OPC UA tag access: a restriction can be undone in one click.
- Switching to Unrestricted keeps your rules; switching back to Restricted brings them back unchanged.
- Bulk access: tick channels and devices, then set a level, reset to inherit, or delete every rule at once.
- Apply one level to every device in a channel from the channel row.
- Empty margins at pipe ends when stretching are gone; a pipe now fills its box exactly.
- A horizontal pipe stretched vertically no longer collapses to a thin line.
- Bring to front and send to back now work on pipe links as well.
- Bringing a part inside a symbol to the front did not work.
- Changing a part color no longer corrupts the symbol gradients.
2026-08-03
Project export/import, and a data-loss fix when importing a single device.
- The whole project can be exported and imported as one file: channels, devices, tags, virtual tags, modules and settings.
- Merge and replace modes on import, with a preview and conflict handling (skip, rename, overwrite).
- Passwords and keys are not exported by default.
- Importing a single channel or device no longer wipes the existing project.
- Some files silently appeared empty on import.
- Top navigation and narrow-screen layout on the website were fixed.
2026-07-31
Scaling, calculated-tag visibility and scan-mode fixes; manual tank height from the screen.
- Values without a device tag, such as tank height, can be entered manually on the screen or bound to a virtual tag.
- Scaling settings were lost in template tag pools; scaled tags now report correct values.
- The scan mode chosen while adding a device was not applied, causing values to drop in and out.
- The calculated tag list appeared empty after installing a template.
- Some device settings were saved but never applied.
2026-07-28
Ready-made screen templates, a complete OPC UA server profile and per-user tag authorisation.
- Koru1000 Screen Templates: ready screens for well, tank, booster, DMA and PRV; device, tag pool and calculated values are created in one step.
- The same screen can be used with different devices (CP110, AquaCnt, Omron).
- A template can be installed as a screen only, then bound to your existing tags.
- Per-user tag authorisation on the OPC UA server: read and read/write can be granted separately.
- Historical data access, server methods and alarm publishing over OPC UA.
- Ready-made logging trigger scenarios (for example, log while a motor runs).
- Buffered data status is now visible when the target database is unreachable.
- Live preview for table format and column names.
- Screen templates are an optional component during setup.
- Virtual tag data type selection was corrected; decimal values are no longer rounded.
- Certificate selection in OPC UA security settings was fixed.
- Object selection, animation and flow behaviour in the screen editor were improved.
2026-07-25
A broad quality pass across alarms, Data Bridge, Modbus and security.
- Modbus device settings were simplified and documented.
- Alarm state tracking and the handling of invalid measurement values were corrected.
- Notification (e-mail and SMS) failures are now visible.
- Data transfer during connection outages was improved.
- Authorisation hardening applied; upgrading is recommended.
- Sensitive information is less exposed and access restrictions are applied consistently.
2026-07-22
Stability and calculation accuracy for Advanced Tags.
- Formula validation was tightened.
- Advanced tags now run continuously.
- Handling of invalid calculation results and number formats was corrected.
- Resilience against faulty formulas was increased.
- Persistence of totalizer and counter values was improved.
2026-07-19
Reliable data logging and broad database compatibility.
- MySQL and MariaDB version compatibility was extended.
- Logging errors that occurred at certain times of day were resolved.
- Issues with custom column and table names were resolved.
- Timestamp precision was improved.
- Database operations were hardened.
2026-07-16
The data-logging settings screen was redesigned.
- Trigger settings moved to a card layout, each summarised in a single sentence.
- Day selection and column mapping screens were simplified.
- Verified in light and dark themes; your existing settings are preserved exactly.
2026-07-13
Critical fix for the appearance of SCADA symbols.
- Saved screens repair themselves the next time they open — nothing to redraw.
- Shape and colour distortion seen on some symbols was resolved.
2026-07-10
IEC 61850 connection resilience.
- An extra safety net was added for situations where no data is returned.
- Connections now recover automatically — no service restart required.
2026-07-07
Critical fix for symbol appearance on SCADA screens.
- Saved screens repair themselves; screen data is untouched.
- Adding a new object no longer distorts the objects already on screen.
2026-07-04
Driver resilience and the complete data-logging feature set.
- Multiple triggers, column mapping and table modes in data logging.
- Every field driver was tested for recovery after an outage without a restart.
- MQTT multi-broker behaviour was improved.
- IEC 61850 connection stability was improved.
2026-07-01
Communication status indicator and connection settings.
- OPC UA Client and IEC 61850 connection settings are applied in full.
- The communication status indicator now reflects the actual data flow.
2026-06-28
The first official product release of MergenHub.
- Nine field drivers: Modbus, Siemens S7, OMRON, MQTT, DNP3, IEC 60870-5-104, IEC 61850 and OPC UA Client.
- OPC UA Server with multiple endpoints and security policies.
- Built-in SCADA/HMI editor, Historian, Data Bridge and ISA-18.2 alarms.
- User, group and resource level authorisation, plus an MCP/AI server.
- Verified scale: 450,000+ tags; single-step installation through the Windows setup wizard.
2026-06-25
Closing release of the 2.4.x series.
- The "Cumulative Difference" feature was renamed "Delta Counter".
2026-06-22
Database writes and alarm delay.
- Alarm tolerance (on-delay) time and network scanning for database server discovery.
- An error on the database write path was fixed.
2026-06-19
Historian database discovery.
- Server scanning, database listing and table creation from inside the application.
- Live validation for every database type, with plain-language error messages.
2026-06-16
SCADA runtime fixes.
- The conveyor symbol was redesigned.
- An input field issue in run mode was fixed.
- Alarm clean-up was improved.
2026-06-13
Fixes for data corruption caused by scaling.
- Copying of scaling settings and the conversion applied on writes were corrected.
2026-06-10
The OPC UA Client driver was added.
- Encrypted sessions to remote OPC UA servers, endpoint discovery and selective tree import.
2026-06-07
Communication continuity fix.
- A communication outage seen on some devices after tag changes was fixed.
Staying current
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Install the new version over the existing one; projects, users and settings are preserved. Licensed installs are told about new releases inside the application.