GitPLC
Reading rung diffs
See exactly what changed between two versions — rung by rung.
A diff shows what changed between two points in history. GitPLC diffs in rungs, not text, so it reads the way you think.
Open a diff
In a project's History, pick any two points — usually "now" versus "before this morning's change" — and GitPLC lays them side by side.
What you'll see
- Added rungs in green.
- Removed rungs in red.
- Changed rungs with the before and after, so you can see the edit, not just that something moved.
- Tag, UDT, and AOI changes called out the same way.
Comments count. If someone rewrote a rung comment but not the logic, the diff still shows it — handy when the "fix" was really a note to the next person.
Use it to answer "what changed?"
When a line behaves differently than it did yesterday, the diff between yesterday and now is usually the whole story. Start there before you start guessing.
What's next
Found the change that broke it? Undo it.