{"product_id":"allen-bradley-1756-l71-b-controllogix-5571-controller-module","title":"Allen-Bradley 1756-L71\/B ControlLogix 5571 Controller Module","description":"\u003ch2\u003eAllen-Bradley 1756-L71\/B ControlLogix 5571 Controller Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1756-L71\/B\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1756-L71\u003c\/strong\u003e Controller Module, operates as a dedicated hardware component for executing programmable logic control, motion coordination, and data processing tasks within ControlLogix EtherNet\/IP and industrial network platforms.\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\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\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\u003e1756-L71\/B\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\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.4 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e2.5 cm x 14.7 cm x 14.2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0-60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eApproximately 2.5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eController Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Family\u003c\/td\u003e\n\u003ctd\u003eControlLogix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eController Series\u003c\/td\u003e\n\u003ctd\u003eLogix 5571\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Memory\u003c\/td\u003e\n\u003ctd\u003e2 MB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNonvolatile Memory\u003c\/td\u003e\n\u003ctd\u003eSD card (1 GB standard, expandable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Ports\u003c\/td\u003e\n\u003ctd\u003eUSB programming port, RS-232 serial port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Networks\u003c\/td\u003e\n\u003ctd\u003eEtherNet\/IP, ControlNet, DeviceNet, DH+, Remote I\/O, SynchLink\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Digital I\/O\u003c\/td\u003e\n\u003ctd\u003e128,000 points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Analog I\/O\u003c\/td\u003e\n\u003ctd\u003e4,000 points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTasks Supported\u003c\/td\u003e\n\u003ctd\u003e32 tasks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrograms Per Task\u003c\/td\u003e\n\u003ctd\u003e100 programs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProgramming Languages\u003c\/td\u003e\n\u003ctd\u003eLadder Logic, Structured Text, Function Block Diagram, Sequential Function Chart\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotion Support\u003c\/td\u003e\n\u003ctd\u003eIntegrated motion via EtherNet\/IP and SERCOS interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to 85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003e5-95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eCE, UL, CSA, KC, C-Tick, IEC compliance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eFirmware Flash Compatibility and ControlLogix Communication Architecture\u003c\/h3\u003e\n\u003cp\u003eThe 1756-L71\/B controller operates on the ControlLogix 5571 platform and supports deterministic EtherNet\/IP communication with additional compatibility for ControlNet, DeviceNet, DH+, Remote I\/O, and SynchLink networks. The controller provides I\/O density scaling through support for up to 128,000 digital I\/O points and 4,000 analog I\/O points.\u003c\/p\u003e\n\u003cp\u003eFirmware flash compatibility must be verified between controller revision, chassis modules, communication interfaces, and application software before configuration changes. The controller supports SD card-based nonvolatile storage for project retention and maintenance operations.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What memory capacity is available in the 1756-L71\/B controller?\u003cbr\u003eA: The controller provides 2 MB user memory with SD card support for nonvolatile application storage.\u003c\/p\u003e\n\u003cp\u003eQ: Which programming and communication interfaces are available on the 1756-L71\/B?\u003cbr\u003eA: The controller provides a USB programming port, RS-232 serial port, and supports EtherNet\/IP, ControlNet, DeviceNet, DH+, Remote I\/O, and SynchLink networks.\u003c\/p\u003e\n\u003cp\u003eQ: What is the supported operating temperature range of the 1756-L71\/B?\u003cbr\u003eA: The controller operates within a temperature range of 0 to 60 deg C.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1756-L71\/B in a compatible ControlLogix chassis with sufficient backplane power capacity. Confirm chassis grounding, module seating, and power supply loading before applying system voltage.\u003c\/p\u003e\n\u003cp\u003eRoute communication cables separately from high-voltage conductors to reduce electrical interference. Apply proper shielding and grounding methods for serial and network connections according to the selected communication protocol requirements.\u003c\/p\u003e\n\u003cp\u003eBefore commissioning, verify firmware revision compatibility, SD card configuration, controller memory availability, and application project settings. Migration evaluation may consider newer ControlLogix 5580 series controllers when increased processing capacity or updated communication functions are required.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43612585328730,"sku":"1756-L71\/B","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1756-L71B2.jpg?v=1783410846","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1756-l71-b-controllogix-5571-controller-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}