# Signal Model

> A dashboard item that lists each equipment model with the machines, plants, signals and units its one definition covers, and how many arrived lately.

Source: https://proxus.io/docs/analyze/dashboard-items/signal-model

The **Signal Model**  item shows how far each equipment model reaches.
An equipment model is the definition a type of machine shares, such as a device profile: one row per model, with the
machines and plants that use it and the signals it defines.

- **Header.** How many equipment models there are, how many machines use them, how many plants they span, how many
  signals the model holds in all, and the share of those signals that arrived recently.
- **Row.** The model, how many machines use it and at which plants, how many signals it defines and their units, and
  the share of its signals that arrived recently. **Same on every machine** means each machine carries every signal of
  the model; otherwise the row says how many machines are complete.

The models used by the most machines come first. Select a model to filter the other items of the dashboard by it.

## Data fields

**Equipment model**, **Asset** and **Signal** are required: one row per asset and signal. **Site** adds the plants to
each row, **Unit** the units, and **Seconds since last value** the share that arrived recently. Bind the seconds with
the **Min** summary.

## Settings

- **Recent within (s)** is how old a signal's last value may be to count as recent.

## Where to see it

The Meridian demo plant uses it on **Meridian · Data Model Command Center**.

## Related

- [Namespace](https://proxus.io/docs/analyze/dashboard-items/namespace)
- [Data Flow](https://proxus.io/docs/analyze/dashboard-items/data-flow)
- [Proxus dashboard items](https://proxus.io/docs/analyze/dashboard-items)