{"product_id":"allen-bradley-2711-b5a8l2-operator-terminal","title":"Allen-Bradley 2711-B5A8L2 PanelView 550 Operator Terminal","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\u003cp\u003eThe Allen-Bradley 2711-B5A8L2 is a high-reliability operator terminal within the PanelView 550 Standard product line. This DC-powered human-machine interface (HMI) is designed for real-time process monitoring, alarm data management, and manual control input in demanding industrial environments. It is suitable for applications in oil and gas, chemical processing, water management, and automated packaging, offering a consolidated electronic interface that replaces traditional hardwired pushbuttons.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHybrid input mechanism featuring both a resistive touchscreen and a 10-key mechanical function keypad (F1-F10).\u003c\/li\u003e\n\u003cli\u003e5.5-inch monochrome blue-mode LCD display with 256 x 128 pixel resolution.\u003c\/li\u003e\n\u003cli\u003eIntegrated Data Highway Plus (DH+) communication port for deterministic plant-floor networking.\u003c\/li\u003e\n\u003cli\u003eDedicated RS-232 serial port for local printer data logging.\u003c\/li\u003e\n\u003cli\u003eSolid-state LED backlight rated for 100,000 hours of operation.\u003c\/li\u003e\n\u003cli\u003eDual-memory architecture with 170 KB for application runtime and 240 KB for nonvolatile storage.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThis terminal is engineered for continuous deployment in severe industrial settings where reliable HMI performance is critical for maintaining operational throughput and reducing unscheduled downtime.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e2711-B5A8L2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003ePanelView 550\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay Size\u003c\/td\u003e\n\u003ctd\u003e5.5 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e256 x 128 pixels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Method\u003c\/td\u003e\n\u003ctd\u003eKeypad and Touchscreen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e24 VDC (18 to 32 VDC range)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication\u003c\/td\u003e\n\u003ctd\u003eDH+ and RS-232\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory\u003c\/td\u003e\n\u003ctd\u003e170 KB Runtime \/ 240 KB Nonvolatile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnsure the terminal is mounted in a panel or enclosure that meets the required NEMA\/IP rating for the environment.\u003c\/li\u003e\n\u003cli\u003eMaintain adequate clearance around the unit for ventilation to prevent overheating.\u003c\/li\u003e\n\u003cli\u003eUse shielded cables for communication lines (DH+ and RS-232) to minimize EMI interference.\u003c\/li\u003e\n\u003cli\u003eEnsure the 24 VDC power supply is stable and within the 18-32 VDC range before connection.\u003c\/li\u003e\n\u003cli\u003ePower down the unit before performing any wiring or maintenance tasks.\u003c\/li\u003e\n\u003cli\u003eHandle the touchscreen with care; do not use sharp objects for input.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch3\u003eIs this unit still in active production?\u003c\/h3\u003e\u003cp\u003eNo, the 2711-B5A8L2 is classified as a discontinued or obsolete product by the manufacturer. We provide these units as surplus or refurbished components to support legacy system maintenance.\u003c\/p\u003e\u003ch3\u003eWhat is the primary communication protocol for this terminal?\u003c\/h3\u003e\u003cp\u003eThis model features an integrated Data Highway Plus (DH+) port, which is a deterministic network protocol commonly used in legacy Allen-Bradley control architectures.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":50991413297404,"sku":"2711-B5A8L2","price":69.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/wm_1_6f2bf6f5-db36-427c-9fa5-0ab4d71710ab.jpg?v=1786992483","url":"https:\/\/www.electronicplc.com\/products\/allen-bradley-2711-b5a8l2-operator-terminal","provider":"Electronic PLC","version":"1.0","type":"link"}