[masarray]

IEC 61850 Ed2 vendor-neutral control discovery trial (NOT physically qualified)

Source evidence: SG7_BCU IID and 2026-10-22 MMS diagnostics show successful association/monitoring/reporting but 0/13 command targets admitted: Boolean Oper.ctlVal combined with two-bit Pos.stVal was treated as SPC against the declared DPC. This should never depend on a configured LN name.

Actual engine solution

• Preserve IEC identity with optional LN prefix, but command semantics are proved by the exact live control DataObject: ctlModel, typed Oper/SBOw ctlVal, Cancel when required, CommandTermination support, and matching typed status read, not by CSWI/XCBR/XSWI naming.
• Support Boolean Oper.ctlVal + verified same-object two-bit ST.stVal => DPC, distinguish a true Boolean SPC, refuse wrong bit widths, different-object status and incomplete enhanced descriptor.
• Recover truncated/sparse MMS NameList with bounded read-only status probes only after valid typed control evidence: one ST.stVal for Boolean (renamed breaker/SPC), and at most two exact standard status leaves for step-shaped typed ctlVal, including TapChg BSC. A status read already typed by the bounded probe is reused, not read twice. Zero wildcard reads, zero MMS Write in synthetic tests.
• Preserve SBO/SBOw sequencing, negative termination, 400 ms delayed LastApplError grace, explicit operator confirmation and fail-closed validation.

Baseline ancestry: qualified #184 9c7cb40364023a7b217e5ec31ab3105ba90142eb. Earlier trial 5744f302fb3ee949bb57eb84800c9ff68fbbd040 passed .NET CI. Current HEAD 24aae4698026f3a5cf7a35225c5d8000018af3e4 has additional sparse-NameList/DPC/BSC tests; exact-SHA .NET CI SUCCESS. Consumer #679 retains #184 in its production lock, with an explicit nonrelease FAST DEV engine override. No physical Select/Operate or relay switching claimed; must pass bench FAT before promotion.

Cross-consumer verification

ARSAS #679 exact-source Windows FAST DEV with engine HEAD 24aae4698026f3a5cf7a35225c5d8000018af3e4: build succeeded; 69/69 focused command/read regression tests passed. Independent run https://github.com/masarray/arsas/actions/runs/39767540537, with SHA/TRX manifest and unchanged production lock #184. No physical Operate proof, no merge/release authority.

SG7_BCU tested Windows EXE — engineering FAT candidate

Consumer ARSAS PR #679 produced real Windows x64 self-contained EXE against this exact engine commit 24aae4698026f3a5cf7a35225c5d8000018af3e4; Windows cross-repo focused 69/69 PASS; native ArdIrec bridge CTest, single-file publish, binary smoke exit 0 and SHA256 verified. Nonrelease artifact: https://github.com/masarray/arsas/actions/runs/39771165218/artifacts/12422956282. EXE SHA256 0b2050e5dd1abeacee31d82f92ebf2150e091f5fc1f03a497e2a1d00bf22c035. No physical relay Select/Operate/feedback pass claimed, no production engine lock promotion.

[masarray]

Repository consolidation audit, 2026-10-22: exact source HEAD 24aae4698026f3a5cf7a35225c5d8000018af3e4 was verified as a Git ancestor (0 missing commits) of canonical combined draft PR #190 HEAD 14b19d30466fd296ad1e6d0bddcdd574992bc464. PR #190 validated this exact integration via Windows merge-tree CI #39778971482: 1,262/1,262 tests pass, zero build errors or warnings.

Closing this original PR as CONSOLIDATED / SUPERSEDED BY #190, WITHOUT merging it directly to main. All branch refs, original commits, engineering discussion and FAT evidence remain preserved and recoverable. #190 remains DRAFT, not field/physical accepted, engine source not yet merged to main, ARSAS pin unchanged. Reopen if consolidation is withdrawn or its functionality becomes independently active.