IF_WITHOUT_ELSE¶

Severity: info by default; warn under the PLCopen preset.

An IF (or IF ... ELSIF ...) statement is missing a final ELSE. The reasoning behind the check (echoed in PLCopen rule L17): the "neither branch holds" path should be explicit so a future reader knows the no-op was intentional, not forgotten. This is a style call and many teams legitimately use IF without ELSE for one-way actions, which is why the default severity is info — visible but non-blocking. Bump or mute in your own config to match team policy.

Settings. No check-specific config.

Trigger.

IF x > 0 THEN
    x := x + 1;
END_IF;                          (* fires — no ELSE *)

The bot posts.

🟦 info  IF_WITHOUT_ELSE
IF statement without an ELSE clause (PLCopen L17)

Fix. Add an ELSE ; (even an empty one with a comment explaining why) so the no-op branch is intentional and visible.