Overview
The Allen-Bradley 2711-T5A5L1 is a PanelView 550 Standard Operator Terminal designed for machine-level HMI applications in industrial automation. It features a 5.5-inch monochrome display, touchscreen user input, 24 VDC input power, and RS-232 (DH-485) communication port. The Allen Bradley 2711-T5A5L1 has been discontinued by the manufacturer, making surplus and refurbished units a practical choice for legacy system maintenance and upgrades.
Key Features
- 5.5-inch monochrome LCD display with analog resistive touchscreen input and DH-485 protocol communication via RS-232
- Built memory of 112 Kbytes for Series A–D and 240 Kbytes for Series E or later, expandable using ATA memory cards ranging from 256 Kbytes to 32 MB
- Touchscreen-only interface; no function keys (F1–F10)
- Built-in LED backlight (non-replaceable)
- Single RS-232 port supporting DH-485 serial network communication
Technical Specifications
Display & Input: Monochrome blue-mode LCD, 256 × 128 pixels resolution, 120 × 60 mm viewing area; 128 touch cells arranged in 16 columns × 8 rows
Power & Performance: Input voltage 18–32 Volts DC (24 Volts DC nominal), maximum power consumption 18 Watts (0.75 Amps at 24 Volts DC)
Communication: Single RS-232 port with DH-485 protocol support for serial network connectivity
Environmental: Operating temperature 0–55°C (32–131°F); storage temperature −20 to 85°C (−4 to 185°F); relative humidity 5–95% non-condensing at 0–55°C; shock rating 30g, operational vibration up to 2g
Physical: Dimensions 152 × 185 × 82 mm (6.0 × 7.28 × 3.20 inches); weight 0.93 kg (1.48 lbs)
Typical Applications
- Legacy PanelView 550 system repairs and replacements
- Machine-level monitoring and control via DH-485 serial networks
- MicroLogix and SLC controller interfaces
- Compact panel-mounted operator interface in factory automation
- Maintenance upgrades for systems using PanelBuilder 32 software
Compatibility & Replacements
The terminal communicates with PLC and SLC controllers through ControlNet, DeviceNet, DH-485, EtherNet/IP, DH+, and remote I/O networks by serial connections. Application runtime memory is approximately 170 kilobytes; the terminal runs on PanelBuilder 32 Software, which also runs on Windows ME, 2000, Vista, and XP operating systems. For systems requiring DH-485 network access without external printer port support, the 2711-T5A5L1 is the standard choice in the PanelView 550 lineup.
