{"product_id":"1756-l85e-allen-bradley-controller-controllogix-5580","title":"1756-L85E Allen-Bradley Controller ControlLogix 5580","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1756-L85E\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1756-L85\u003c\/strong\u003e Controller, operates as a dedicated hardware component for high-speed logic execution and multi-axis CIP Motion processing within EtherNet\/IP control networks.\u003c\/p\u003e\n\u003ch3\u003eCatalog Designation \u0026amp; Platform Variants\u003c\/h3\u003e\n\u003cp\u003eThe base model \u003cstrong\u003e1756-L85\u003c\/strong\u003e designates the core central processing unit within the ControlLogix 5580 hardware platform. The letter suffix \"E\" identifies the integration of an embedded 1 Gbps RJ45 Ethernet communication port on the front panel. The numerical designation \"85\" specifies the internal memory tier, providing 40 MB of user application memory for program execution, tag storage, and controller task organization.\u003c\/p\u003e\n\u003ch3\u003eProcessing Unit Hardware Specifications\u003c\/h3\u003e\n\u003cfigure\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\u003e1756-L85E\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\u003e0.39 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e140 x 35 x 145 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e6.2 W max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Memory\u003c\/td\u003e\n\u003ctd\u003e40 MB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (1.2 VDC)\u003c\/td\u003e\n\u003ctd\u003e5 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (5.1 VDC)\u003c\/td\u003e\n\u003ctd\u003e1.2 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEmbedded Communication\u003c\/td\u003e\n\u003ctd\u003e1 x RJ45 Gigabit Ethernet (10\/100\/1000 Mbps), 1 x USB 2.0 Port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eHigh-Speed Backplane Bus \u0026amp; Network Synchronization\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1756-L85E\u003c\/strong\u003e utilizes high-velocity backplane bus communication across the 1756 chassis structure, maximizing data throughput to local I\/O modules and network bridges. Operating within Profinet \/ EtherNet\/IP deterministic networks, the controller enforces real-time I\/O scanning and synchronized motion axis execution. Strict firmware flash compatibility ensures stable system task scheduling and deterministic handshakes between memory registers and field instrumentation.\u003c\/p\u003e\n\u003ch3\u003ePackage Component List\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Allen-Bradley 1756-L85E ControlLogix 5580 Controller Module\u003c\/li\u003e\n\u003cli\u003e1 x 1784-SD2 2 GB Secure Digital (SD) Card (pre-installed)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMechanical Installation \u0026amp; Wiring Protocols\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eChassis Slot Insertion\n\u003cul\u003e\n\u003cli\u003eAlign the controller module circuit board with the top and bottom guides of any slot in a 1756 chassis. Press the unit firmly into the backplane until the upper and lower housing latches click into place.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eEarth Grounding Integrity\n\u003cul\u003e\n\u003cli\u003eEnsure the 1756 chassis ground lug connects to the central cabinet functional earth bar using heavy gauge copper wire (minimum 14 AWG) to establish low-impedance grounding.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eNetwork Interface Wiring\n\u003cul\u003e\n\u003cli\u003eRoute Category 6 STP Ethernet cables away from high-voltage power conduits and variable frequency drive outputs to prevent electromagnetic interference.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eMemory Card Retaining Latch\n\u003cul\u003e\n\u003cli\u003eVerify that the front SD card access door is fully closed during operation to protect the card slot pins from environmental debris and static discharge.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Engineering FAQ\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eWhat is the hot-swapping restriction for inserting the module into an active chassis?\u003c\/p\u003e\n\u003cp\u003eThe module supports Removal and Insertion Under Power (RIUP). It can be installed into or removed from an active 1756 backplane without interrupting adjacent operational modules.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat current does the controller draw from the 5.1 VDC backplane power rail?\u003c\/p\u003e\n\u003cp\u003eThe controller draws 1.2 A from the 5.1 VDC rail of the chassis power supply during normal processing and network communication operations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow does network latency perform during heavy CIP Motion execution?\u003c\/p\u003e\n\u003cp\u003eThe embedded 1 Gbps Ethernet port offloads network layer processing directly on the CPU hardware, maintaining sub-millisecond motion cycle synchronization without latency spikes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoes firmware flashing erase the stored user program in the controller?\u003c\/p\u003e\n\u003cp\u003eYes, flashing firmware clears active volatile RAM. Non-volatile flash storage or SD card image restoration is required to restore program code after flashing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow should Ethernet cable shielding be grounded at the controller connection point?\u003c\/p\u003e\n\u003cp\u003eGround the Ethernet cable shield at the cabinet entry gland plate or network switch end, maintaining continuous shielding to the controller metallic RJ45 socket.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat happens to local I\/O states if the controller undergoes an unrecoverable fault?\u003c\/p\u003e\n\u003cp\u003eOutputs transition immediately to their configured fault state (off, on, or hold last state) as defined within the local I\/O module configuration parameters.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIs an internal battery required to retain user application program memory?\u003c\/p\u003e\n\u003cp\u003eNo, the unit uses energy storage capacitors and internal non-volatile flash memory to preserve data during total power loss without using lithium batteries.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat minimum bend radius must be maintained for the front Ethernet patch cable?\u003c\/p\u003e\n\u003cp\u003eMaintain a minimum bend radius of four times the outer cable diameter to avoid conductor displacement and physical strain on the RJ45 port assembly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":47230601232557,"sku":"1756-L85E","price":899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/allen-bradley_1756-l85e_1.jpg?v=1786895196","url":"https:\/\/www.maxwellplc.com\/products\/1756-l85e-allen-bradley-controller-controllogix-5580","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}