COUNTER_VALUE_CHANGED

Severity: info / warn (≥ 2×) / error (≥ 10×)

CTU / CTD / CTUD PV (preset value) changed between revisions. Severity scales with the magnitude of the change, like TIMER_VALUE_CHANGED.

Why it matters. Counters define trip points (max retries, batch size, fault thresholds). Bumping PV from 3 to 30 changes the machine's behavior on day one of production.

Settings. No check-specific config.

Trigger.

C1(CU := xPulse, PV := 10);    (* before *)
C1(CU := xPulse, PV := 100);   (* after, 10× *)

The bot posts.

🟥 error  COUNTER_VALUE_CHANGED
Counter C1.PV: 10 → 100 (10.00×)
Magnitude ratio 10.000. Counter trips later as a result.

Fix. Confirm the new preset is intended. Document the rationale in the PR.