Lauer 4x40 Alphanumeric Display
The Lauer 4x40 alphanumeric display (4 lines x 40 characters) is a high-capacity text terminal designed for industrial applications requiring extensive message display and simple operator interaction. It features a large LCD with adjustable backlight, a membrane keypad with function and navigation keys, and serial communication (RS232/RS485). This unit is ideal for complex process monitoring, multi-parameter systems, and applications where a large amount of text information needs to be presented.
Technical Specifications
Display: 4 lines x 40 characters, STN LCD, LED backlight (green or amber), adjustable contrast.
Character size: 5x7 dot matrix, with scrolling and blinking functions.
Keypad: 12 function keys (programmable), 4 navigation keys, Enter key.
Processor: 16-bit microcontroller, 128 KB RAM, 256 KB flash.
Interfaces: 1 x RS232 (9-pin), 1 x RS422/485 (terminal block), optional Profibus DP.
Power Supply: 24 V DC (18–30 V), consumption 6 W.
Operating Temperature: 0 °C to 50 °C.
Storage Temperature: -20 °C to 65 °C.
Humidity: 10% to 90% non-condensing.
Protection: Front IP65, rear IP20.
Mounting: Panel mount, cutout 220 x 120 mm, depth 45 mm.
Weight: 0.8 kg.
Buzzer and status LED.
Real-time clock (optional).
Functional Features
This display can store up to 500 user-defined messages with embedded variables. It supports scrolling, blinking, and inverse video. The keypad can be customized for various control functions. Communication uses a simple ASCII protocol or Modbus RTU. The unit can log up to 200 alarm events with timestamps (if RTC fitted). Configuration is done via a PC tool through the serial port.
Installation Guidelines
Mount in a panel cutout with gasket and clips. Connect 24 V DC power with a 0.5 A fuse. For RS485, use shielded twisted-pair cable with termination. For RS232, use a standard null-modem cable. Set communication parameters via DIP switches.
Operating Conditions
Indoor use, 0–50 °C, humidity<90%. Vibration 0.3 g, shock 5 g. Backlight life 30,000 hours.
Applications
Complex process monitoring, multi-zone temperature control, batch management, and large conveyor systems.
Compliance
CE, UL, RoHS. Meets EN 61000-6-2 and EN 61000-6-3.
Ordering Variants
Available with different backlight colors, RS485 interface, and custom keypad legends.
