OpenPLC Runtime v4.1.0-rc.2

Pre-release for staging testing. Includes:

• Plugin stop sequence fix: Non-blocking STOP/START socket commands with COMMAND:BUSY guard, refining the rc.1 implementation.
• EtherCAT task-based scheduling and Welford diagnostics: I/O exchange syncs with a user-selectable IEC task via tick divisor; incremental moving averages replace cumulative-sum-with-reset.
• Unified WebSocket auth with REST: Removes the unused role field and unifies the WebSocket auth pipeline with REST.
• EtherCAT cyclic-exchange jitter reduction: Real-time tuning to lower jitter on the master loop.
• EtherCAT test coverage: Added unit tests and security regression tests.
• EtherCAT diag race fixes and RT hardening: Resolves diagnostics race conditions, hardens the real-time path, and tightens startup checks.

OpenPLC Runtime v4.1.0-rc.1

Pre-release for staging testing. Includes:

• Robust plugin stop sequence: Non-blocking STOP/START socket commands with COMMAND:BUSY guard. Two-phase plugin stop (graceful + forced asyncio cancellation). Honest return values from all Python plugins.
• EtherCAT task-based scheduling: I/O exchange syncs with a user-selectable IEC task via tick divisor.
• EtherCAT Welford diagnostics: Incremental moving averages replace cumulative-sum-with-reset.

v4.0.9

Merge pull request #116 from Autonomy-Logic/fix/plugin-lifecycle-over…

v4.0.8

Merge branch 'feat/tcp-communication-blocks' into development

v4.0.7

Merge pull request #106 from Autonomy-Logic/development

Fix tag on release

v4.0.6

Merge pull request #99 from Autonomy-Logic/development

Logging improvements

v4.0.5

Merge pull request #92 from Autonomy-Logic/development

Python blocks fix; Modbus echo response fix

v4.0.4

v4.0.4 - OPC-UA plugin and ARM v7 build fix

v4.0.3

Merge branch 'development'

v4.0.2

Fix Snap7 socklen_t type for MSYS2/Cygwin compatibility

Changed uint32_t to socklen_t in snap_msgsock.cpp for non-Windows
platforms. MSYS2/Cygwin defines socklen_t as int (signed), not
uint32_t (unsigned), causing compilation errors. Using socklen_t
is the portable POSIX-compliant solution.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>