Software Downloads

1.2.1 May 20, 2026

New features

• Tag Monitor — a new bottom-panel tab that lists every addressed symbol with its live arena value, refreshed every poll cycle. Filter by name / address / description, toggle system-generated tags in or out of view, and copy the visible table to the clipboard as TSV.
• Per-IO-point enable/disable. Each row in the IO Configuration point tables has a checkbox; unchecked points keep their symbol in the tag database but the compiler skips emitting a Modbus mapping for them. Cuts wire traffic on multi-channel modules where only a few channels are wired.

Python editor

• Tab / Shift-Tab now block-indent / block-outdent a multi-line selection (4 spaces per line). Single-line Tab still inserts 4 spaces; single-line Shift-Tab outdents the current line.
• Ctrl-V normalizes tab characters to 4 spaces on paste, so snippets from chat, web docs, or other editors land with consistent space indentation.

Python Log

• Log entries are now selectable text — drag-select any line and Ctrl-C to the clipboard.
• New Copy All toolbar button serializes the entire log to the clipboard as plain text.

WhiskerHMI

• Alarm panel reliability. Fixed a TCP socket race in the IO Scanner service that caused alert-history queries from the Flutter HMI runtime to silently drop responses. Adds diagnostic logging to surface future relay issues.
• Alerts without an explicit output_tag now compile cleanly; the compiler auto-binds them to bit slots within a synthetic __alerts_state register so the on-PLC alert tracker can watch transitions.

PLC compiler

• Digital inputs/outputs now always emit as BIT type regardless of the IODF's source-register width.
• BitOffset default for DI/DQ is now 0 (was the arena-position modulo 8). Bit-packed modules still work via the IODF's explicit bit: N field.
• Consecutive same-(device, table, datatype) input reads are now coalesced into single multi-register Modbus transactions, cutting wire traffic ~5-6× for typical modules.
• RTU device validation no longer fails with “RTU device requires uart setting” — the IDE now carries the UART index from the hardware definition into saved ModbusPort entries and auto-heals legacy projects on load.
• The IO Scanner service binary tries /dev/ttyAMA{N} first, then falls back to /dev/ttyS{N}, so a single build runs on both CM5 and RK3568 targets.

IODF library

• mSmart-Universal-IO: removed the Baud Rate, Slave ID, and Sample Rate config registers (configuration-only, not runtime values) and fixed the Solar Voltage register address (1224 → 1225).

Documentation

• User manual (PDF and HTML) renders with a branded layout: D6 Labs logo header, copyright footer, PDF bookmarks generated from the heading hierarchy, and a fixed split-pane TOC in the HTML output.
• Walkthrough chapters updated to introduce the Tag Monitor and instruct readers to disable unused IO points.

1.2.0 May 17, 2026

Initial public release of the Whisker IDE Standalone edition

• Application + Project workspace with dockable panels.
• Tag Database (BOOL, INT, DINT, REAL types).
• Ladder Logic editor (Nexus.io AC target), Function Blocks, and Tasks.
• HMI Designer (Nexus.io AC and WhiskerHMI targets) with a full widget palette — gauges, pumps, valves, tanks, trends, alerts.
• I/O Configuration (built-in I/O plus Modbus TCP/RTU expansion).
• Alerts editor with HMI runtime overlay and alert history.
• Modbus Server (TCP slave) with Map Viewer and CSV export.
• Python editor with REPL and live print() log (SmartController Classic targets).
• Device discovery via mDNS; Build, Upload, Download, and Run/Stop/Debug controls.
• WhiskerHMI “Generate Installer” packaging and an Inno Setup-based Windows installer.