Product Details
Overview
The Allen-Bradley 2711-T5A2L1 is a standard operator terminal in the PanelView 550 series, designed for reliable human-machine interface in industrial applications. It features a 5.5-inch monochrome LCD with blue mode, touchscreen input, and DH485 communication for seamless integration with Allen-Bradley controllers. Its compact size and efficient design make it suitable for control panels where space and clear visualization are critical.
Key Features
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5.5-inch monochrome LCD with blue mode
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Touchscreen input with 128 touch cells (16 columns x 8 rows)
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Display resolution: 256 x 128 pixels
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Application memory: 170 KB runtime, 240 KB non-volatile RAM for objects, text, and bitmaps
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Communication: DH485 port for PLC connectivity
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Input voltage: 18–30V DC (24V nominal)
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Backlight LED rated for 100,000 hours
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Operating temperature range: 0–55°C (32–131°F)
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Heat dissipation: 20 W
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Discontinued product, series A or B
Technical Specifications
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Manufacturer: Allen-Bradley
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Product Line: PanelView 550
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Part Number: 2711-T5A2L1
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Product Type: Standard Operator Terminal
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Display Size: 5.5 inches
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Display Area: 120 x 60 mm (4.75 x 2.38 in.)
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Touchscreen: 128 touch cells, 26 x 30 pixels each
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Application Memory: 170 KB runtime, 240 KB non-volatile RAM
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Input Voltage: 18–30V DC
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Communication Ports: DH485
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Operating Temperature: 0–55°C
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Heat Dissipation: 20 W
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Weight: 2.06 lbs (0.94 kg)
Application Scenarios
The 2711-T5A2L1 is ideal for:
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Compact control panels requiring operator interface
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Visualizing machine status and process data
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Integration with Allen-Bradley PLCs via DH485
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Upgrading or replacing legacy PanelView 550 systems
FAQs
Q: What is the display type and size?
A: Monochrome LCD, 5.5 inches with 256 x 128 resolution.
Q: Which communication protocol does it use?
A: DH485 for PLC connectivity.
Q: Can it handle application objects and bitmaps?
A: Yes, with 240 KB of non-volatile memory.
Q: Is this model still in production?
A: No, the 2711-T5A2L1 is discontinued and suitable for legacy system support.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Why Programmable Logic Controllers Drop into Stop Mode: An Expert Analysis
Industrial automation systems rely heavily on Programmable Logic Controllers (PLCs) to maintain uninterrupted production. When a PLC unexpectedly shifts from Run to Stop mode, whole manufacturing lines stall.
As control systems evolve across modern factory automation, understanding the root causes of these interruptions helps engineers minimize costly downtime. This technical guide breaks down why PLCs trip into Stop mode and provides practical strategies to mitigate system faults.
Understanding Root Causes of Unplanned PLC Stop Mode in Industrial Automation
Modern Programmable Logic Controllers manage execution through distinct operational states: Run, Stop, Start-Up, and Hold. During power-up, a controller initializes memory registers within Stop mode before briefly transitioning to Start-Up mode. During this phase, internal self-diagnostics evaluate system integrity across hardware and user programs. If the controller detects no critical faults, it enters Run mode to execute the control program continuously. However, any severe system anomaly forces the CPU back into Stop mode immediately to prevent erratic machine behavior across the plant floor.
Human-Machine Interface Design: Essential Guide to HMI Selection, Visualization, and Control System Integration
Human-Machine Interfaces (HMIs) serve as the primary operational window into complex industrial automation systems. Modern HMIs convert raw machine data into clear graphical displays, enabling operators to oversee entire manufacturing processes in real time. Instead of relying on physical control panels full of hardwired switches, engineers program interactive screens using intuitive graphics, dynamic color coding, and responsive touch interfaces. Over my 15 years in control systems engineering, I have observed HMIs transform from basic display screens into sophisticated command centers that drive operational efficiency across DCS and PLC environments.