{"product_id":"allen-bradley-1756-l1-controllogix-processor-module","title":"Allen-Bradley 1756-L1 ControlLogix Processor Module","description":"\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003eAllen-Bradley 1756-L1 ControlLogix Processor Module\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp class=\"\"\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1756-L1\u003c\/strong\u003e, also cataloged as the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-L1\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eProcessor Module, operates as a dedicated hardware component for programmable logic execution and controller communication within ControlLogix platforms. The module provides Logix5550 processing with RS-232 communication and ControlLogix backplane data exchange.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003cth class=\"last:pe-10\"\u003eParameter\u003c\/th\u003e\n\u003cth class=\"last:pe-10\"\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-L1\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\u003e0.79 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eOne slot width\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\u003e4.1 W maximum at 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eProcessor Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003eControlLogix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProcessor Family\u003c\/td\u003e\n\u003ctd\u003eLogix5550\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Memory\u003c\/td\u003e\n\u003ctd\u003e64 KB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiscrete I\/O Capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 128,000 discrete I\/O\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnalog I\/O Capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 4,000 analog I\/O\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Port\u003c\/td\u003e\n\u003ctd\u003eOne RS-232 serial interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Protocols\u003c\/td\u003e\n\u003ctd\u003eDF1, DH-485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNetwork Compatibility\u003c\/td\u003e\n\u003ctd\u003eDeviceNet, DH+, ControlNet, EtherNet\/IP networks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e30 V continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current\u003c\/td\u003e\n\u003ctd\u003e120 mA at 5 VDC; 2 mA at 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Operating Current\u003c\/td\u003e\n\u003ctd\u003e2 mA at 10 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Operating Current\u003c\/td\u003e\n\u003ctd\u003e3.5 mA at 30 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Cable\u003c\/td\u003e\n\u003ctd\u003e1756-CP3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Memory Modules\u003c\/td\u003e\n\u003ctd\u003e1756-M1, 1756-M2, 1756-M3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Backup\u003c\/td\u003e\n\u003ctd\u003e1756-BA1, 1756-BA2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Type\u003c\/td\u003e\n\u003ctd\u003eOpen\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRemovable Terminal Blocks\u003c\/td\u003e\n\u003ctd\u003e1756-TBCH, 1756-TBS6H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eControlLogix Processor Execution and Network Communication\u003c\/h3\u003e\n\u003cp\u003eThe 1756-L1 provides processor execution functions for ControlLogix PAC systems through the Logix5550 architecture. The module executes application logic, manages I\/O data exchange, and communicates with other ControlLogix components through the chassis backplane.\u003c\/p\u003e\n\u003cp\u003eThe processor supports firmware flash compatibility within the ControlLogix platform and provides communication access through RS-232 serial connection. Network integration options include DeviceNet, DH+, ControlNet, and EtherNet\/IP communication interfaces through compatible communication modules.\u003c\/p\u003e\n\u003ch3\u003eBackplane Bus Communication and I\/O Density Scaling\u003c\/h3\u003e\n\u003cp\u003eThe 1756-L1 uses the ControlLogix backplane bus for deterministic data transfer between the processor, I\/O modules, and communication interfaces. The processor architecture supports scalable I\/O configuration with up to 128,000 discrete I\/O points and 4,000 analog I\/O points.\u003c\/p\u003e\n\u003cp\u003eMemory expansion is supported through compatible 1756-M1, 1756-M2, and 1756-M3 memory modules. Battery backup options include 1756-BA1 and 1756-BA2 components for application data retention.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What communication interface is integrated into the 1756-L1 processor module?\u003c\/strong\u003e\u003cbr\u003eA: The module includes one RS-232 communication port supporting DF1 and DH-485 protocols.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What type of memory is provided by the 1756-L1?\u003c\/strong\u003e\u003cbr\u003eA: The processor provides 64 KB user memory and supports optional 1756-M1, 1756-M2, and 1756-M3 memory modules.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What ControlLogix chassis requirements apply to the 1756-L1?\u003c\/strong\u003e\u003cbr\u003eA: The module occupies one ControlLogix chassis slot and requires backplane power of 120 mA at 5 VDC and 2 mA at 24 VDC.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1756-L1 processor module into a compatible ControlLogix chassis slot and verify chassis power availability before startup. Ensure the module is fully seated in the backplane connector and secured according to the chassis installation procedure.\u003c\/p\u003e\n\u003cp\u003eConnect RS-232 communication wiring using the specified communication cable and verify serial communication parameters before data exchange. Route communication cables separately from high-voltage power conductors to reduce electromagnetic interference.\u003c\/p\u003e\n\u003cp\u003eInstall compatible battery and memory modules according to hardware configuration requirements. Verify firmware compatibility, controller configuration, and network module settings before placing the controller into operation.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43612060319834,"sku":"1756-L1","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1756-L12.jpg?v=1783404251","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1756-l1-controllogix-processor-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}