UNUSED_INPUT_VAR

Severity: info

A VAR_INPUT parameter is declared but never read inside the POU body.

Why it matters. Either the input was added speculatively and forgotten, or the consuming logic was deleted and the input left behind. Either way it pollutes the interface.

Settings. No check-specific config.

Trigger.

FUNCTION_BLOCK FB_Pump
VAR_INPUT
    xEnable : BOOL;
    xUnused : BOOL;                (* fires, never used *)
END_VAR

The bot posts.

🟦 info  UNUSED_INPUT_VAR
VAR_INPUT xUnused in FB_Pump is never read in the POU body
Either remove the input or replace its usages with the actual
logic that should have consumed it.

Fix. Remove the input, or add the logic that should have used it.