docs(focas): Status/ flags, PMC coalescing, parts count via PARAM:6711, read-only policy (#257 #266 #258)

Claude-Session: https://claude.ai/code/session_01Ef2ozxS7QPanGT8uoATbTe
2026-10-08 16:59:08 -04:00
parent 8d916f2af7
commit 487d394cde
2 changed files with 77 additions and 3 deletions
@@ -1105,6 +1105,9 @@ host logger factory (wired in `DriverFactoryBootstrap`; the FOCAS and TwinCAT fa
  primary-host claim backs off 2 s → 30 s; writes encode the birth's own datatype (unsupported birth types
  `BadNotSupported`).
 - **FOCAS / AbLegacy:** background loops are joined (≤ 5 s) on shutdown.
+- **FOCAS (#257/#266):** `cnc_statinfo` flags are a `Status/` fixed-tree subtree (`FIXED:Status/Run`…, capability-probed);
+  adjacent PMC tags in one poll batch coalesce into one `pmc_rdpmcrng` (`PmcCoalesce` config, default on) — a refused range
+  falls back to per-tag reads, a transport failure fails all members without retry. Parts count stays `PARAM:6711` (docs only).
 - **Re-Initialize without teardown (#630):** FOCAS, AbLegacy, AbCip, TwinCAT, S7 and OpcUaClient `InitializeAsync`
  first release the prior device/session state (cancel, ≤ 5 s join, dispose — incl. the AbCip/FOCAS alarm
  projections) — the device-state half of `ShutdownAsync` only; the poll engine is kept and the actor re-subscribes