Lauer LCA 320 (300.001.0) Text Display

The Lauer LCA 320, identified by part number 300.001.0, is a compact and reliable text display unit designed for industrial operator interface applications. This panel provides a clear alphanumeric display with a simple keypad, offering an affordable solution for machine control and monitoring tasks where graphical display is not required.

Display and Keypad Features

• Model: LCA 320

• Part Number: 300.001.0

• Display Type: Alphanumeric LCD with LED backlight

• Display Format: 2 lines x 20 characters

• Character Height: 7 mm

• Backlight: Green LED, contrast adjustable

• Keypad: 16 tactile keys

• Function Keys: 4 programmable keys

• Numeric Keys: 10 (0-9) with decimal point

• Status Indicators: Power and communication LEDs

Technical Specifications

• Processor: 8-bit at 10 MHz

• Memory: 16 KB application memory

• Communication Ports: 1 x RS-232, 1 x RS-485

• Protocols: Modbus RTU (slave)

• Power Supply: 24 V DC ±20%, 150 mA

• Operating Temperature: 0°C to 50°C

• Storage Temperature: -20°C to 60°C

• Protection Rating: IP54 (front)

• Panel Cut-Out: 92 mm x 45 mm

• Dimensions: 106 mm x 56 mm x 30 mm

• Weight: 0.2 kg

Functional Description

The LCA 320 is designed for applications that require simple display of process variables and basic operator interaction. The 2-line display can show a label and its corresponding value, or a status message. The 4 function keys can be used to scroll through screens, acknowledge alarms, or trigger simple commands.

The panel communicates via Modbus RTU, making it compatible with most PLCs and automation controllers. It is often used as a local display for temperature controllers, flow meters, and drive systems.

Installation and Mounting

Install the unit in a standard 92 x 45 mm cut-out. Secure with the supplied clips. Connect the 24 V DC power and the RS-485 communication cables to the terminal block on the rear. The Modbus address is set via DIP switches.

Configuration and Programming

Configuration is performed using the Lauer LCA Configurator. Users can define the screens to be displayed, assign the Modbus registers to be read, and configure key functions. The configuration is downloaded via the RS-232 port.

Maintenance and Diagnostics

The LCA 320 requires minimal maintenance. Routine cleaning of the display is recommended. The unit includes a self-test function that runs at power-up.

Integration with Control Systems

As a Modbus RTU slave, this display can be integrated into any automation system with Modbus communication capability. It is widely used for local indication of process values.

Environmental and Safety Compliance

CE and RoHS compliant. Designed for industrial use in controlled environments.

Technical Support and Documentation

A user manual, configuration guide, and Modbus register map are provided. Technical support is available through Lauer distributors.

Conclusion

The Lauer LCA 320 300.001.0 Text Display is a simple, cost-effective, and reliable operator panel for applications requiring basic text display and keypad functions.