Allen-Bradley 2706-LV2R DataLiner DL40 Plus Message Display Ver 1.01 Ser A Rev C

Description

The Allen-Bradley 2706-LV2R is a 2-line DataLiner DL40 Plus message display engineered for real-time operator interface, process monitoring, and system status annunciation in industrial automation environments. Operating as a dedicated visual interface within the Allen-Bradley DataLiner DL40 family, this display unit bridges complex PLC control systems and plant-floor operators by delivering high-visibility alphanumeric messaging, alarms, and diagnostics directly at the machine level.

Equipped with a bright vacuum fluorescent display (VFD) filtered to a high-contrast blue/green color, the 2706-LV2R provides exceptional legibility across a 7.6-meter (25-foot) viewing distance. The display handles 20 characters per line using a $5 \times 7$ dot matrix structure. Designed for seamless system integration, the 2706-LV2R features built-in Allen-Bradley Remote I/O (RIO) link connectivity along with RS-232 and RS-485 serial communication interfaces, allowing direct PLC rack mapping via Discrete I/O or Block Transfers.

Housed in a rugged enclosure engineered for panel mounting, the unit meets NEMA Type 12, 13, and 4X (indoor) ratings when properly installed with its front bezel seal. The 2706-LV2R includes a wide-range universal AC power supply (100–240V AC), a dedicated IBM PC-XT/AT compatible 8-pin DIN keyboard port for local entry, and an internal annunciation relay for driving external audible or visual alarms upon specific message triggers.

Features

• High-Visibility Display Architecture: Features a 2-line, 20-character-per-line vacuum fluorescent display (VFD) with $5 \times 7$ dot matrix characters filtered to a blue/green color for readability up to 7.6 meters (25 feet).
• Integrated Allen-Bradley Remote I/O Port: Connects directly to PLC Remote I/O links supporting $1/4$, $1/2$, $3/4$, or full rack sizes with Discrete I/O or Block Transfer data modes.
• Dual Serial Communication Ports: Built-in RS-232 and RS-485 interfaces support baud rates from 300 to 19200 baud with flexible 7 or 8 data bit configurations.
• Integrated Annunciation Relay: Includes a single Normally Open (N.O.) dry contact relay rated for 3A at 240V AC or 3A at 30V DC to drive local auxiliary alarms.
• Universal AC Power Input: Operates on an internal 100–240V AC power supply (50/60 Hz, 60VA max) to simplify field wiring and global deployment.
• External Keyboard Interface: Provides a standard 8-pin DIN port compatible with IBM PC-XT/AT keyboards for local configuration and message triggering.
• Rear DIP Switch Configuration: Enables hardware setup for RIO rack addresses, baud rates, block transfers, serial protocols, and system diagnostics without opening the main enclosure.
• Industrial Panel Mount Enclosure: NEMA Type 12, 13, and 4X (indoor) environmental rating when mounted in a compliant enclosure.

Applications

• PLC Alarm & Diagnostic Display: Serves as a centralized operator messaging terminal displaying fault codes, process warnings, and system status directly from Allen-Bradley PLC processors over Remote I/O.
• Machine Status Monitoring: Provides real-time production metrics, batch counts, and cycle times on standalone OEM machinery and automated assembly lines.
• Process Annunciation: Triggers auxiliary horns, stack lights, or beacons via its internal dry contact relay when critical alarm conditions occur.

Technical Specifications

Connections / Interfaces

Installation Guidelines

1. Safety Verification: Ensure all incoming power is locked out and tagged off before making electrical or physical installations. Confirm the installation location meets Class I, Division 2 / Non-hazardous environmental requirements as applicable.
2. Panel Cutout Preparation: Prepare a panel cutout measuring 345.9 mm (13.62 in) wide by 88.9 mm (3.50 in) high. Drill six 6.4 mm (0.25 in) diameter mounting holes according to official template spacing.
3. Physical Mounting: Position the 2706-LV2R display unit into the cutout. Install the six provided mounting nuts from the rear. Alternately tighten all nuts in a cross-pattern to a torque of 1.13 Nm (10 in-lbs) to ensure a NEMA 4X/12/13 seal.
4. Wiring Separation: Route incoming AC power lines along a separate path from Remote I/O and serial communication cables to prevent electromagnetic interference (EMI). Never run signal and power lines within the same conduit.
5. Power Connection: Connect 100–240V AC wiring to terminals L1, L2/N, and safety ground. Ensure protective earth grounding is firmly secured.
6. Network & Alarm Connection: Wire the Allen-Bradley Remote I/O cable to terminals 1, Shield, and 2. If using local annunciation, wire the external alarm circuit across the RELAY output terminals.

Configuration Guidelines

1. Power-Down Switch Adjustment: Set hardware DIP switch banks SW-1, SW-2, and SW-3 located on the rear of the display prior to applying power. DIP switch changes (except Select Enable) are scanned exclusively during power-up.
2. Rack Address Configuration (SW-1): Configure switch bank SW-1 to assign the target Allen-Bradley Remote I/O rack address corresponding to the PLC I/O configuration.
3. Operating Parameters (SW-2): Set switch bank SW-2 to define RIO Baud Rate (57.6K, 115.2K, 230.4K), Last Chassis status, Block Transfer enabling, Keyboard type, and PLC Communication Error message handling.
4. Serial Address Setup (SW-3): Adjust switch bank SW-3 to configure the serial network address for triggers coming over RS-485 or external keyboard inputs.
5. Select Enable Adjustment: If modifying the Select Enable function (SW2-9), this parameter can be adjusted while power is ON and takes effect immediately.
6. System Power-Up: Apply AC power and observe the startup diagnostic sequence to verify that communication rates, rack addresses, and firmware revisions load without errors.

Compliance and Certifications

• UL Listing: UL Listed for UL-508 Industrial Control Equipment.
• Hazardous Locations: UL Listed for Class I, Division 2, Groups A, B, C, and D Hazardous Locations.
• CSA Certification: CSA 22.2 No. 213 for Canadian Hazardous Location Safety Standards.
• CE Mark: Compliant with European Union EMC Directive (89/336/EEC), EN 50082-2 (Industrial Immunity), EN 50081-2 (Industrial Emission), and IEC 1131-2 Programmable Controllers standard.