Allen-Bradley 2711-K5A8 PanelView 550 HMI Touchscreen

Allen-Bradley 2711-K5A8 PanelView 550 is a 5.5-inch monochrome operator terminal designed for rugged industrial use. It features a blue-mode LED-backlit monochrome LCD with a 256 x 128 pixel display and a keypad input (F1–F10) rather than a touch screen, making it well-suited for environments where human-machine interaction occurs through physical keys. The unit communicates via DH+ and includes an RS-232 printer port for on-stand printouts; it is powered from 120 VAC. It runs PanelBuilder32 software and provides 170 KB of application runtime memory, plus 240 KB of nonvolatile RAM for application objects and text/bitmaps, with ATA memory cards supported for storage. A battery-backed real-time clock timestamps critical data and a backlight rated for about 100,000 hours ensures long-term visibility. Weighing around 6 pounds and packaged in roughly 14 x 11 x 8 inch shipping dimensions, this PanelView 550 terminal is part of the Series A–H family and is built for continuous industrial operation. It offers up to 1 million keypad actuations (F1–F10) and delivers compatibility with classic Rockwell automation workflows, including straightforward integration with DH+ networks and serial printer outputs. Firmware is documented from 1.00 up to 4.48, aligning with the legacy PanelView 550 software ecosystem. If a touchscreen interface is required, Rockwell’s 2711-T5A family would be the appropriate alternative.