---
title: StatusLight Component
description: Documentation for the StatusLight component used in ESP-32 industrial applications with Modbus-485 support.
keywords: ESP-32, Platform.io, Modbus-485, StatusLight, C17, industrial
---

## STATUSLIGHT

**Path**: [../src/components/StatusLight.h](../src/components/StatusLight.h)

**Revision History**: Initial documentation

The `StatusLight` component provides control over status LEDs with support for steady (ON/OFF) and blinking states. It integrates with Modbus for remote monitoring and control.

## REQUIREMENTS

- **Pins**:
- A GPIO pin configured for output (e.g., `PIN_LED_FEEDBACK_0`).
- **Dependencies**:
- Arduino framework.
- Modbus-485 support (`ModbusTCP.h`).
- Logging (`ArduinoLog.h`).
- Component base class (`Component.h`).

## FEATURES

- Supports ON, OFF, and BLINK states.
- Modbus integration for remote state monitoring and control.
- Configurable blink intervals.
- Detailed logging for debugging.

## TODOS

- Add support for custom blink patterns.
- Implement energy-saving modes.
- Extend Modbus functionality for advanced configurations.

## EXAMPLE

```cpp
#ifdef PIN_LED_FEEDBACK_0
StatusLight statusLight_0 = new StatusLight(
this,                  // owner
PIN_LED_FEEDBACK_0,    // pin
ID_LED_FEEDBACK_0,     // key
LED_FEEDBACK_0_MB_ADDR // modbusAddress
);
if (statusLight_0) {
components.push_back(statusLight_0);
Log.infoln(F("StatusLight_0 initialized. Pin:%d, ID:%d, MB:%d"),
PIN_LED_FEEDBACK_0, ID_LED_FEEDBACK_0, LED_FEEDBACK_0_MB_ADDR);
} else {
Log.errorln(F("StatusLight_0 initialization failed."));
}
#endif
```