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LAN-Compatible Smart Signal Tower “LR5-LAN”
Revolutionizing Alert Notifications for the Digital Industrial Era
18/09/2025
PATLITE (THAILAND) CO., LTD.
In the manufacturing industry, initiatives such as factory visualization and the use of IoT data—key elements of smart factory development—are also becoming a growing trend in Thailand. Signal towers play a vital role in advancing the digital transformation (DX) of production.
In this article, we present the features of Patlite’s stacked signal light ‘LR5-LAN’ engineered to address these increasing needs.
Leveraging Signal Tower Flashing Patterns for Advanced Data Analysis
Implementing signal towers in factories offers the following advantages:
✓ Provides real-time remote monitoring of machine status
✓ Eliminates the need for manual visual inspections by production line operators
✓ Supports analysis of potential abnormality trends by connecting to data collection systems
The “LR5-LAN” signal tower supports Ethernet (LAN) connectivity. By removing the need for a contact output board and minimizing components and wiring, it enables simpler control and streamlined installation.
■ Features of the LR5-LAN
1. Direct Control via LAN Connection
• Supports protocols such as HTTP and Modbus/TCP
• Enables direct control from industrial PCs (IPC) and PLCs
• Eliminates the need for a contact output board, reducing system complexity
▲ Supports direct connection to industrial PCs and PLCs
2. Supports Alert Notifications in Industrial Systems
• Integrates seamlessly with SCADA and MES systems
• Provides clear, on-site alerts via the signal tower, complementing on-screen notifications and making machine status easier to understand for operators
3. User-Friendly Design
• Features an automatic command generation tool accessible via a web browser
• Provides sample source code compatible with Windows® and Linux
• Includes seven preset flashing patterns
4. Connection Verification Function
• Enables monitoring of the connection status with the host device
• Automatically issues an alert via the LED unit if the connection is lost
5. Easy Connection and Operation
• Supports 24V DC power supply via RJ-45 (LAN), reducing cabling requirements
• When a 24V DC power source is not available, the optional ADP-001C adapter enables connection to an AC outlet
▲ LR5-LAN AC Outlet Connection
The LR5-LAN offers direct control via Ethernet (LAN), eliminating the need for a contact output board to reduce system components and cut costs. It also supports alarm notifications from SCADA and MES systems and features an automatic command generation tool accessible via a web browser. In addition, the LR5-LAN minimizes wiring requirements and supports flexible power supply options.
Examples of LR5-LAN Network System Applications
The following are examples of how the LR5-LAN can be implemented in factory environments.
■ Retort Food Factory
This factory performs temperature and seal integrity checks, using a three-color signal tower to indicate machine status. Operating data from each machine is transmitted to the control room via LAN. By integrating with the MES system, machine downtime is automatically recorded, helping improve Overall Equipment Effectiveness (OEE) in production operations.
▲ Example of installation on factory equipment
■ Automobile Manufacturing Factory
On the automobile parts assembly line, quality control is required at every stage of production. LR5-LAN units are installed at inspection stations to monitor machine operating status throughout the process. If a defect is detected or additional checks are required, an alert is immediately sent to the line supervisor. At the same time, quality data is automatically recorded for later analysis and improvement activities.
■ Warehouse
Warehouses typically feature numerous belt conveyors and sorting systems. By installing LR5-LAN units, operators can remotely monitor machine status in real time via a dashboard, reducing on-site response time for troubleshooting.
▲ Alarm notifications via SCADA and other systems
Patlite’s LR5-LAN signal tower stands apart from conventional signal towers in every aspect. Designed for easy installation without complex coding, it lowers technical barriers and simplifies deployment. More than just a signal tower, its efficient connectivity and communication capabilities allow it to integrate with a factory’s production line database. It supports rapid troubleshooting, accurate maintenance planning, and steady progress toward Industry 4.0 objectives.
