UNUSED_OUTPUT_VAR

Severity: info

A VAR_OUTPUT is declared but never written inside the POU.

Why it matters. Callers reading the output only ever see its initial value. Often a half-finished refactor or a TODO that never landed.

Settings. No check-specific config.

Trigger.

FUNCTION_BLOCK FB_Pump
VAR_OUTPUT
    xDone : BOOL;                  (* fires if nothing in the body assigns xDone *)
END_VAR

The bot posts.

🟦 info  UNUSED_OUTPUT_VAR
VAR_OUTPUT xDone in FB_Pump is declared but never written
Callers reading this output will only ever see its initial value.

Fix. Wire the output to actual logic, or remove the declaration.