> ## Documentation Index
> Fetch the complete documentation index at: https://docs.fabl.studio/llms.txt
> Use this file to discover all available pages before exploring further.

# Barco Event Master

> Drive a Barco Event Master presentation processor - recall and manage presets, cut and auto to Program, run cues, and freeze sources.

The **Barco Event Master** device controls an Event Master presentation processor, so a rundown item can recall the right look to Preview and take it to Program on cue.

## Connection

Provide the master unit's **host**, its **JSON-RPC port** and **ASCII port**, and the **toolset version**. The **agent callback base URL** is where the processor sends its notifications back.

## Commands

### Presets

| Command            | What it does                                              |
| ------------------ | --------------------------------------------------------- |
| Recall preset      | Recalls a preset by id to Preview, or straight to Program |
| Recall next preset | Recalls the next preset in sequence to Preview            |
| Save preset        | Saves the current Program state as a new preset           |
| Rename preset      | Renames an existing preset                                |
| Delete preset      | Deletes a preset by id                                    |

Recall defaults to **Preview**, which is the safe default - the look is staged and only reaches the audience when you take it.

### Transitions

| Command | What it does                                                                                          |
| ------- | ----------------------------------------------------------------------------------------------------- |
| Cut     | Switches Preview to Program immediately, with no transition                                           |
| Auto    | Transitions Preview to Program over the transition time, with an optional duration override in frames |

### Cues and sources

| Command       | What it does                                                               |
| ------------- | -------------------------------------------------------------------------- |
| Cue transport | Plays, pauses or stops a cue by id                                         |
| Freeze        | Freezes or unfreezes a source, a screen destination, or an aux destination |

## Triggers

Rules can react to the connection changing, a preset changing - carrying its id and name - and a cue changing.

## State

The device reports its connection state, along with the most recent preset and cue changes.