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Wiring — click, click, done
The two ways to draw a wire in UnifCAD, how to place 90° corners, how to cancel, how to branch off an existing run, and how to reshape a wire after it is drawn.
Wiring in UnifCAD is not freehand drawing: a wire always goes from one terminal to another, and the editor keeps the route orthogonal for you.
There are two ways to draw one. They produce exactly the same wire.
Way 1 — click to wire (recommended)
Best when the wire has to go around something.
Click a terminal
Press and release on the terminal, without moving the mouse. The wire is now attached to your cursor and follows it.
Click on empty sheet to leave a corner
Every click on empty sheet commits a 90° corner, snapped to the grid. Click as many as the run needs. The wire will never come out diagonal.
Click the destination
Click the other terminal — or an existing wire, which creates a branch. The cable is created at that moment, and not before.
Nothing exists until the last click
While you are wiring, the line you see is only a preview. If you cancel, there is no half-finished cable left on the sheet to clean up.
While you are drawing
| You want to | Press |
|---|---|
| Undo the last corner | Backspace |
| Cancel the whole wire | Esc, or the right mouse button |
Changing sheet, or switching to simulation, also cancels a wire in progress.
Way 2 — drag from terminal to terminal
Best for a short, obvious run.
Press the mouse on a terminal, keep it held, drag to the destination terminal, and release. If you release on an existing wire instead, you get a branch.
Dragged wires are routed automatically — straight, or with an L, Z or U shape depending on where the two terminals sit. If the automatic route goes somewhere you do not want, use way 1 instead and place the corners yourself.
Branching off an existing wire
You do not need to go back to the source terminal to feed a second device. Finish a wire on top of another wire and UnifCAD inserts a junction — a splice — at that point.
A junction is a point of the conductor, not a device connected to it:
- It takes the colour of the wire it sits on, so the run stays one colour.
- The branch inherits that run's nature — tap an L+ run and the branch is L+, whatever you drew last.
- Delete the junction and the two wires heal back into a single wire, keeping the route you drew.
Reshaping a wire after it is drawn
A finished wire is not frozen.
- Drag a segment to move that part of the run. The segments that leave a terminal stay rigid on purpose — a wire must come out of a terminal straight, the way it does in a real cabinet.
- Redundant corners are cleaned up automatically when you release. If a corner no longer bends anything, it disappears instead of piling up.
- Double-click a wire to open its properties, where Auto re-route discards your manual corners and hands the run back to the automatic router.
- Moving a component drags its wires along; the ends stay anchored to their terminals.
Deleting a wire is not the same as deleting a corner
Delete with a wire selected removes the whole run. Backspace only undoes the last corner, and only while you are still drawing.
The colour of what you are drawing
UnifCAD remembers the nature of the last wire you drew — L+, L1, N, PE — and gives it to the next one, exactly like the "current wire type" of a professional e-CAD. That is why a whole 24 V DC control run comes out in one colour without you setting anything.
Two rules govern it:
- A committed terminal always wins. The moment one end of the wire is a terminal that declares its own nature, that nature is used — and becomes the new active one.
- A branch takes the nature of the run it taps, not the last one you drew.
Full detail, including how to change the colours: Wire colours.
When the wire refuses to connect
If the click does not produce a cable, UnifCAD shows a short message explaining why. There are three of them, and each has a specific meaning — see Why a connection is refused.