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

# Control Lite Commander

> Control the 542APC from Solidyne Lite Commander remote application

The **542 Lite Commander** allows controlling the **542APC** unit from a PC on the LAN.\
It's easy to configure and enables automation of tasks like:

* Switching the **processing preset** remotely.
* Changing transmission mode between **stereo / mono**.

Switching can be done:

* **Manually**.
* Scheduled, according to a **time schedule**.

***

## Download and installation

* The application can be downloaded for free from:\
  👉 [https://www.solidynepro.com/DW/lite.rar](https://www.solidynepro.com/DW/lite.rar)
* Compatible with Windows 10, 11 and Windows Server editions (32 and 64 bits).
* The installer allows configuring auto-start from Windows Start menu or creating a Desktop shortcut.
* Alternatively, the executable can be copied to any folder and run directly.
* No administrator permissions required.

**Default folders:**

* Application: `C:\Program Files (x86)\Solidyne 542 Lite commander`
* Data: `<appData>\Solidyne` (example: `C:\Users\Usuario\AppData\Roaming\Solidyne`)

**Used ports:**

* Discovery → `30303 UDP`
* Application → `80 TCP`
* Default TCP timeout → `1000 ms`

<Info>
  The application is designed to control a single unit at a time, although multiple instances can be run to control more than one 542APC.
</Info>

***

## Main screen

The main screen displays:

* **Host IP** of the selected unit.
* Current processing preset.
* FM mode status (Mono / Stereo).

  <img src="https://mintcdn.com/solidyne/a7lu0Xpt375mm9I5/images/542/542-LiteCommander.gif?s=839c32e36cf5e30ddd7881c0a7a32bdf" alt="542 Lite Commander Gi" title="542 Lite Commander Gi" style={{ width:"64%" }} width="452" height="276" data-path="images/542/542-LiteCommander.gif" />

### Main controls

* **Switch Stereo–Mono**: shows and toggles transmission mode.
  * In **MONO** the 38 kHz subcarrier is suppressed.
  * See details in [About MONO transmission](/en/542/542-mono)
  *
* **Switch Schedule**: enables/disables time scheduler.
* **Always on top**: keeps application visible while using other software.
* **Presets:** Allows switching processing preset. The change takes place immediately. \
  Preset or mode changes made **from the unit's front panel** are also reflected on this screen.
* Available buttons:
  * **Discovery** → opens LAN unit search screen.
  * **Schedule** → opens time schedule editor.

## Schedule

The **Schedule** window allows creating a time schedule:

* Defines which **preset** and **transmission mode** (Stereo/Mono) will be applied according to day and time.
* All available presets are listed on the left.
* Schedule is configured by hours and days on the right.

<img src="https://mintcdn.com/solidyne/JDg4NJVft6NhK4Bp/images/download.png?fit=max&auto=format&n=JDg4NJVft6NhK4Bp&q=85&s=85a8e353cbd4228f1e6f85c3dd930859" alt="download.png" title="download.png" style={{ width:"65%" }} width="1920" height="1066" data-path="images/download.png" />

### Main functions

* **Set preset** → schedules a preset at a specific time.
* **Set mode** → schedules transmission mode.
* **Clean preset / Clean mode** → removes scheduling.

Schedule files are:

* `Week.sch` → Monday through Friday.
* `Saturday.sch` → Saturdays.
* `Sunday.sch` → Sundays.

<Info>
  Files for specific days can be created (e.g.: `Monday.sch`, `Tuesday.sch`).\
  Just copy `Week.sch` and rename it with the desired day.
</Info>

Blank fields mean the software won't control preset/mode in that interval.

## Discovery

<img src="https://mintcdn.com/solidyne/a7lu0Xpt375mm9I5/images/542/542-LiteCommander-Discovery.png?fit=max&auto=format&n=a7lu0Xpt375mm9I5&q=85&s=d4ea0aa6cff483b3101144faf168d555" alt="542 Lite Commander Discovery Pn" title="542 Lite Commander Discovery Pn" style={{ width:"81%" }} width="757" height="271" data-path="images/542/542-LiteCommander-Discovery.png" />

* Sends a **broadcast message** on the LAN to locate 542APC units.
* If the unit was powered off, repeat search with **\[Discovery]** button.
* Found units are listed with:
  * IP address
  * Host name
  * MAC address
  * Device details
* If multiple network interfaces exist on the PC, network card can be selected for search.
* Select a unit from the list and press **\[Select]** to control it.

<Warning>
  It is recommended that the processor has a **fixed IP**.
</Warning>

* Selected IP is saved in `V-RACK.INI` file for later use on restarts.

***