{"product_id":"allen-bradley-1756-ib16-a-controllogix-dc-digital-input-module","title":"Allen-Bradley 1756-IB16\/A ControlLogix DC Digital Input Module","description":"\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003eAllen-Bradley 1756-IB16\/A ControlLogix DC Digital Input Module\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp\u003eConfigured for DC discrete signal acquisition in ControlLogix backplane architectures, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1756-IB16\/A\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(\u003cstrong\u003e1756-IB16\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003edigital input module) provides direct electrical state sampling of 16-channel 24 V DC field inputs and maps status transitions into the ControlLogix controller through deterministic backplane I\/O scanning.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cp\u003eThe provided configuration defines a fixed module structure\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1756-IB16\/A\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith no additional functional suffix segmentation or option-coded electrical variants described in the available specification set.\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-IB16\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003eAllen-Bradley\u003c\/span\u003e\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\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e16 DC input channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e10 to 30 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Voltage\u003c\/td\u003e\n\u003ctd\u003e24 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Current\u003c\/td\u003e\n\u003ctd\u003e~2.1 mA per point at 24 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current\u003c\/td\u003e\n\u003ctd\u003e110 mA at 5.1 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003e250 V (input to backplane)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Delay\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 1 ms typical\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% to 95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL, CE, CSA, C-Tick, KC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlot Type\u003c\/td\u003e\n\u003ctd\u003eControlLogix chassis module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eControlLogix Backplane Deterministic Input Scanning\u003c\/h3\u003e\n\u003cp\u003eThe 1756-IB16\/A executes DC input state acquisition through ControlLogix backplane cyclic scheduling, where each of the 16 channels is sampled and mapped into controller input tags per scan interval. The module participates in chassis-level deterministic communication using backplane arbitration, ensuring consistent synchronization between field input state transitions and controller task execution. Electronic keying and slot-level identity verification prevent mismatched module configuration during runtime insertion.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003eQ: Can the 1756-IB16\/A be replaced under power (RIUP)?\u003cbr\u003eA: Yes, the module supports Removal and Insertion Under Power within ControlLogix chassis rules, provided controller and chassis configuration allow I\/O resynchronization.\u003c\/p\u003e\n\u003cp\u003eQ: How is input isolation implemented?\u003cbr\u003eA: Each input channel group is isolated from the backplane with 250 V galvanic isolation to reduce ground potential coupling between field wiring and controller logic.\u003c\/p\u003e\n\u003cp\u003eQ: What determines input update latency?\u003cbr\u003eA: Input delay is typically \u0026lt; 1 ms and is governed by internal opto-isolation switching and ControlLogix backplane scan scheduling.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003eInstall module in a compatible ControlLogix chassis slot with proper backplane engagement.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMaintain separation between DC input wiring and high-power switching conductors to reduce induced noise coupling.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eUse shielded cables where long field runs are present; terminate shields at a single cabinet ground reference point.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eVerify correct input voltage range (10 to 30 V DC) prior to energizing field circuits.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnsure terminal wiring integrity and mechanical seating before applying system power.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43585761312858,"sku":"1756-IB16\/A","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1756-IB16A2.jpg?v=1783066132","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1756-ib16-a-controllogix-dc-digital-input-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}