The old 06-tests, with paths retargeted and both tools proven to run.
Verified end to end during the move - fake_plc.py served on a spare port
and verify_modbus.py read it:
read : 69/69 points OK
writable : 15/15 RW points OK
PASS : the runtime matches the register map
fake_plc.py --expect was BROKEN by the PS_* removal in the previous
commit: it fell back to the scada_tag column, which no longer exists, and
died with KeyError. It now uses ci_item, so the names it prints are the
CI Server items an operator actually sees. Regenerated
expected_readings.txt; fake_values.json came back byte-identical, which
confirms the seed really is deterministic as the docstring claims.
README corrections:
- default host was dev-ubuntu; now 10.0.0.17, with the container
fallback for when that address is not routable
- said 11 RW points; there are 15 (11 control + 4 simulation)
- the 'reading the output' section described the FIELD build - tripped
pumps, alarm word 16500, seeded %MW defaults - as though it were what
you would see. The deployed PLC runs the SIMULATION build. Both are
now shown side by side, with the simulation column marked as the one
that is live.
- says plainly that none of the 20 acceptance tests are implemented
here: this harness verifies the contract, not the behaviour
- adds a caution against running fake_plc.py on port 502 of the live
host, where the real PLC is serving and CI Server is polling
