{"product_id":"allen-bradley-2711-t5a9l1-operator-interfaces-terminal","title":"Allen-Bradley 2711-T5A9L1 Operator Interfaces Terminal","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 2711-T5A9L1\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e2711-T5A9L1\u003c\/strong\u003e Operator Interface, operates as a dedicated hardware component for human-machine visualization and control input execution within RS-232 (DH-485) communication networks.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e2711-T5A9L1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.95 kg (2.09 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e152 mm x 185 mm x 82 mm (6.0 in. x 7.28 in. x 3.20 in.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 deg C to +55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e18 W maximum (24 VDC nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e18-32 VDC (24 VDC nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay Type\u003c\/td\u003e\n\u003ctd\u003e5.3-inch Blue Mode Monochrome Liquid Crystal Display (LCD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay Resolution\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\u003eAnalog Resistive Touchscreen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Ports\u003c\/td\u003e\n\u003ctd\u003eRS-232 Communication Port (DH-485 Protocol), RS-232 Printer Port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Memory\u003c\/td\u003e\n\u003ctd\u003e170 KB Application Flash Memory\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Rating\u003c\/td\u003e\n\u003ctd\u003eNEMA 12, 13, 4X (Indoor) \/ IP65\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLifecycle Status\u003c\/td\u003e\n\u003ctd\u003eDiscontinued by Manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus Communication \u0026amp; Deterministic Network Interfacing\u003c\/h3\u003e\n\u003cp\u003eThe Allen-Bradley 2711-T5A9L1 PanelView 550 terminal communicates over RS-232 serial channels utilizing DH-485 protocol to exchange deterministic tag data, alarm bits, and user inputs directly with SLC 500, MicroLogix, and ControlLogix systems. The primary serial interface maintains reliable point-to-point and multi-drop communication velocity, while an independent RS-232 serial printer port handles asynchronous alarm printing and diagnostic record logging. Onboard firmware flash compatibility supports rapid project file transfers via PanelBuilder32 software, maintaining high I\/O density scaling and predictable scan updates across industrial machine control environments.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What power input range is required to operate the 2711-T5A9L1 terminal?\u003c\/p\u003e\n\u003cp\u003eA: The 2711-T5A9L1 requires a nominal 24 VDC external supply, operating reliably within an allowable input range of 18 VDC to 32 VDC.\u003c\/p\u003e\n\u003cp\u003eQ: Can the 2711-T5A9L1 operator interface be swapped while 24 VDC power is live?\u003c\/p\u003e\n\u003cp\u003eA: No. Main DC supply voltage and serial communication cables must be completely de-energized prior to terminal insertion or removal to prevent electrical arcing and logic corruption.\u003c\/p\u003e\n\u003cp\u003eQ: How are operator screen layouts and configured tags retained during a panel power loss?\u003c\/p\u003e\n\u003cp\u003eA: System runtime configurations, display objects, and application logic are written directly to internal nonvolatile flash memory, securing all screen data without requiring battery maintenance.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eCut a rectangular opening measuring 123 mm x 156 mm (4.86 in. x 6.15 in.) in a NEMA 4X or IP65 enclosure door. Position the 2711-T5A9L1 through the panel cutout, ensuring the rubber sealing gasket sits flush against the panel surface to ensure watertight ingress protection.\u003c\/p\u003e\n\u003cp\u003eSecure the housing using the provided mounting clamps, tightening the screws evenly in an alternating sequence to a torque of 1.1 Nm to 1.4 Nm (10 in-lbs to 12 in-lbs). Wire the 24 VDC input leads using copper conductors rated for 75 deg C or higher, observing correct terminal polarity (+24 VDC and DC Common). Bond the terminal grounding stud directly to the main cabinet ground bus with a low-impedance copper conductor.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52836511744280,"sku":"2711-T5A9L1","price":270.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/3483\/3688\/files\/2711-T6C9L1_Cocoai_ec0ba0e7-9798-450d-9154-cd0308bb169d.jpg?v=1791512059","url":"https:\/\/www.innoplcsync.com\/products\/allen-bradley-2711-t5a9l1-operator-interfaces-terminal","provider":"InnoPLC Sync Co., Ltd.","version":"1.0","type":"link"}