Mirrors the v1 otopcua-cli value prop (ad-hoc shell-level PLC validation) for
the Modbus-TCP driver, and lays down the shared scaffolding that AB CIP, AB
Legacy, S7, and TwinCAT CLIs will build on.
New projects:
- src/ZB.MOM.WW.OtOpcUa.Driver.Cli.Common/ — DriverCommandBase (verbose
flag + Serilog config) + SnapshotFormatter (single-tag + table +
write-result renders with invariant-culture value formatting + OPC UA
status-code shortnames + UTC-normalised timestamps).
- src/ZB.MOM.WW.OtOpcUa.Driver.Modbus.Cli/ — otopcua-modbus-cli executable.
Commands: probe, read, write, subscribe. ModbusCommandBase carries the
host/port/unit-id flags + builds ModbusDriverOptions with Probe.Enabled
=false (CLI runs are one-shot; driver-internal keep-alive would race).
Commands + coverage:
- probe single FC03 + GetHealth() + pretty-print
- read region × address × type synth into one driver tag
- write same shape + --value parsed per --type
- subscribe polled-subscription stream until Ctrl+C
Tests (38 total):
- 16 SnapshotFormatterTests covering: status-code shortnames, unknown
codes fall back to hex, null value + timestamp placeholders, bool
lowercase, float invariant culture, string quoting, write-result shape,
aligned table columns, mismatched-length rejection, UTC normalisation.
- 22 Modbus CLI tests:
· ReadCommandTests.SynthesiseTagName (5 theory cases)
· WriteCommandParseValueTests (17 cases: bool aliases, unknown rejected,
Int16 bounds, UInt16/Bcd16 type, Float32/64 invariant culture,
String passthrough, BitInRegister, Int32 MinValue, non-numeric reject)
Wiring:
- ZB.MOM.WW.OtOpcUa.slnx grew 4 entries (2 src + 2 tests).
- docs/Driver.Modbus.Cli.md — operator-facing runbook with examples per
command + output format + typical workflows.
Regression: full-solution build clean; shared-lib tests 16/0, Modbus CLI tests
22/0.
Next up: repeat the pattern for AB CIP (shares ~40% more with Modbus via
libplctag), then AB Legacy, S7, TwinCAT. The shared base stays as-is unless
one of those exposes a gap the Modbus-first pass missed.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
