Joseph Doherty 909490622d fix(driver-s7): resolve Medium code-review findings (Driver.S7-002, S7-004, S7-008) ...

S7-002: add inline comment documenting the UInt32→Int32 lossiness in MapDataType,
consistent with the Int64/UInt64 note. Tracked for a follow-up that adds unsigned
DriverDataType members.

S7-004: inject ILogger<S7Driver> (optional, defaults to NullLogger); add structured
log calls for connect success/failure, probe Running/Stopped transitions, and
swallowed poll-loop exceptions, so operators have an event trail via Serilog.

S7-008: restructure WriteAsync catch ladder to mirror ReadAsync — OperationCanceledException
re-throws, NotSupportedException → BadNotSupported, PUT/GET-disabled PlcException →
BadNotSupported/Faulted, genuine PlcException → BadDeviceFailure/Degraded, all
others → BadCommunicationError/Degraded. Health is now updated on every write failure.
Also factor ReadOneAsync reinterpret into internal ReinterpretRawValue and
WriteOneAsync boxing into internal BoxValueForWrite for testability (Driver.S7-014).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-05-22 10:17:08 -04:00

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