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fix(driver-twincat): resolve Medium code-review finding (Driver.TwinCAT-011)

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Confirm AdsErrorCode values from Beckhoff.TwinCAT.Ads 7.0.172 and rewrite
MapAdsError with 20 explicit cases. Fix critical bug: AdsSymbolVersionChanged
was 0x0702 (DeviceInvalidGroup) but DeviceSymbolVersionInvalid is 1809
(0x0711); correct constant and all comments. Add BadOutOfService for
DeviceNotReady and BadInvalidState for DeviceInvalidState/PLC-in-Config.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Joseph Doherty
2026-05-22 10:49:38 -04:00
parent f7d6bd12b9
commit 40b28e8820
5 changed files with 72 additions and 44 deletions
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code-reviews/Driver.TwinCAT/findings.md
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@@ -298,7 +298,7 @@ symbol-version-changed is never routed to rediscovery (see Driver.TwinCAT-013).
explicit case for symbol-version-changed routed to rediscovery, and for PLC-in-Config mapped
to `BadOutOfService`/`BadInvalidState`.
**Resolution:** _(open)_
**Resolution:** Resolved 2026-05-22 — confirmed all codes from `Beckhoff.TwinCAT.Ads` 7.0.172 `AdsErrorCode` enum. Rewrote `MapAdsError` with 20 explicit cases keyed to the correct decimal values. Fixed the critical bug: `AdsSymbolVersionChanged` was `0x0702u` (= `DeviceInvalidGroup`) but the actual `DeviceSymbolVersionInvalid` is 1809 (0x0711); corrected constant and updated all comments. Added `BadOutOfService` for `DeviceNotReady` (PLC not running) and `BadInvalidState` for `DeviceInvalidState` (PLC in Config mode, 0x0712) and `DeviceSymbolVersionInvalid` (0x0711). Added `BadOutOfService`/`BadInvalidState` OPC UA StatusCode constants to the mapper.
### Driver.TwinCAT-012