{"product_id":"allen-bradley-2711-b5a5l1-panelviews","title":"Allen-Bradley 2711-B5A5L1 PanelView 550 Operator Terminal","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\u003cp\u003eThe Allen-Bradley 2711-B5A5L1 is a PanelView 550 operator terminal designed for reliable human-machine interface (HMI) applications in industrial environments. This DC-powered unit facilitates real-time process monitoring, alarm logging, and operator control by communicating with programmable logic controllers (PLCs). Engineered for demanding settings such as water treatment, food packaging, and chemical processing, the terminal provides a robust interface that helps minimize downtime and improve system reliability.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHybrid input system featuring both an analog resistive touchscreen and a 10-key mechanical function keypad (F1 to F10) for operation in high-vibration environments.\u003c\/li\u003e\n\u003cli\u003e5.5-inch monochrome blue-mode LCD display with a 256 x 128 pixel resolution.\u003c\/li\u003e\n\u003cli\u003eIntegrated RS-232 communication port supporting DH-485 protocol for connectivity with SLC 500 and MicroLogix controllers.\u003c\/li\u003e\n\u003cli\u003eInternal 170 KB application runtime memory with nonvolatile storage for screen and font data.\u003c\/li\u003e\n\u003cli\u003eField-replaceable backlight module (2711-NL1) to extend service life.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eThis terminal is suitable for various industrial automation tasks, including local machine control, status monitoring, and alarm management in manufacturing and process control facilities. It is compatible with standard DH-485 network architectures.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e2711-B5A5L1\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\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e24 VDC nominal\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\u003eDisplay Type\u003c\/td\u003e\n\u003ctd\u003eMonochrome LCD (Blue Mode)\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\u003eCommunication\u003c\/td\u003e\n\u003ctd\u003eRS-232 (DH-485)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory\u003c\/td\u003e\n\u003ctd\u003e170 KB Application Runtime\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\u003eLifecycle Status\u003c\/td\u003e\n\u003ctd\u003eDiscontinued \/ Obsolete\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 provides adequate protection against environmental contaminants.\u003c\/li\u003e\n\u003cli\u003eMaintain proper clearance around the unit to allow for adequate ventilation and cooling.\u003c\/li\u003e\n\u003cli\u003eUse shielded communication cables (e.g., 2711-NC13) to prevent signal interference from high-voltage equipment or EMI sources.\u003c\/li\u003e\n\u003cli\u003eVerify that the 24 VDC power supply is stable and properly grounded before connecting to the terminal.\u003c\/li\u003e\n\u003cli\u003eAlways power down the unit before performing maintenance, such as replacing the backlight module.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\u003ch3\u003eIs this terminal still in production?\u003c\/h3\u003e\u003cp\u003eNo, the 2711-B5A5L1 is classified as a discontinued or obsolete product. We provide these units as spare parts for existing legacy systems.\u003c\/p\u003e\u003ch3\u003eWhat communication protocol does this unit use?\u003c\/h3\u003e\u003cp\u003eThis model utilizes the RS-232 physical interface configured for the DH-485 proprietary network protocol.\u003c\/p\u003e\u003ch3\u003eCan the backlight be replaced?\u003c\/h3\u003e\u003cp\u003eYes, the unit supports the 2711-NL1 field-replaceable backlight module.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43911007993946,"sku":"2711-B5A5L1","price":69.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/wm_1_1b22156b-688c-4699-9429-2a96f1a69ae6.jpg?v=1787678399","url":"https:\/\/www.spareoil.com\/products\/allen-bradley-2711-b5a5l1-panelviews","provider":"SpareOil Automation","version":"1.0","type":"link"}