{"product_id":"allen-bradley-2711-b5a8l1-panelview-550-operator-terminal","title":"Allen-Bradley 2711-B5A8L1 PanelView 550 Operator Terminal","description":"\u003cp\u003eThe Allen-Bradley 2711-B5A8L1 is a PanelView 550 operator terminal designed for reliable human-machine interface (HMI) applications. This DC-powered unit provides real-time process monitoring, alarm management, and operator control in demanding industrial environments such as chemical processing, oil and gas, and water treatment facilities.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHybrid input interface featuring both an analog resistive touchscreen and a 10-key tactile function keypad (F1 to 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 connectivity.\u003c\/li\u003e\n\u003cli\u003eLong-life 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 suitable for industrial automation tasks requiring robust HMI functionality, including machine control, process visualization, and alarm annunciation in environments where high-vibration or harsh conditions necessitate physical keypad input options.\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-B5A8L1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC nominal (18-32 VDC range)\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 Type\u003c\/td\u003e\n\u003ctd\u003eKeypad and Touchscreen\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 cutout that meets the required clearance for the 152 x 221 x 106 mm chassis.\u003c\/li\u003e\n\u003cli\u003eUse a NEMA-rated enclosure to maintain the integrity of the front-panel seal in washdown or dusty environments.\u003c\/li\u003e\n\u003cli\u003eVerify that the 24 VDC power supply is within the 18 to 32 VDC range before connection to prevent damage.\u003c\/li\u003e\n\u003cli\u003eMaintain proper grounding practices to protect the DH+ communication interface from electrical noise and EMI.\u003c\/li\u003e\n\u003cli\u003ePower down the unit before connecting or disconnecting communication cables or peripheral devices.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs this unit still in production?\u003c\/strong\u003e No, the 2711-B5A8L1 is classified as a discontinued or obsolete product by the manufacturer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the primary communication protocol?\u003c\/strong\u003e This model utilizes the Data Highway Plus (DH+) protocol for high-speed deterministic networking.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I use this in high-vibration areas?\u003c\/strong\u003e Yes, the inclusion of 10 mechanical function keys allows for reliable control operation even when touchscreen use is difficult due to vibration.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":50988411879676,"sku":"2711-B5A8L1","price":80.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/wm_1_e9f35473-4a01-45c8-b73e-7731c121b8f2.jpg?v=1786899521","url":"https:\/\/www.electronicplc.com\/ar\/products\/allen-bradley-2711-b5a8l1-panelview-550-operator-terminal","provider":"Electronic PLC","version":"1.0","type":"link"}