{"product_id":"allen-bradley-1756-ib16isoe-controllogix-sequence-of-events-input-module","title":"Allen-Bradley 1756-IB16ISOE ControlLogix Sequence of Events Input Module","description":"\u003ch1 class=\"PDq2pG_selectionAnchorContainer\"\u003eAllen-Bradley 1756-IB16ISOE ControlLogix Sequence of Events Input Module\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp\u003eConfigured for sub-millisecond discrete event capture in ControlLogix backplane I\/O architectures, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1756-IB16ISOE\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(\u003cstrong\u003e1756-IB16ISOE\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDigital DC Isolated Input Sequence of Events Module) provides direct electrical acquisition of 24–48 VDC sink-source field signals across 16 individually isolated Sequence of Events input channels within ControlLogix systems. Each input is processed with per-point timestamp resolution for deterministic event ordering at hardware level.\u003c\/p\u003e\n\u003cp\u003eThe module executes high-speed state transition detection with 50 microseconds base delay plus selectable filtering, mapping input transitions into backplane time-stamped event records.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cp\u003eThe 1756-IB16ISOE is a single catalog-defined Sequence of Events module. No additional suffix segmentation or option coding structure is defined in the provided dataset. No decomposition logic is applied.\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-IB16ISOE\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\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.44 lbs\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\u003e5.5 W max at 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eDigital DC Isolated Input Sequence of Events Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Inputs\u003c\/td\u003e\n\u003ctd\u003e16 individually isolated SOE inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e24–48 VDC sink-source\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e10–55 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Delay Time\u003c\/td\u003e\n\u003ctd\u003e50 microseconds + selectable filter time\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Operating Current\u003c\/td\u003e\n\u003ctd\u003e5.5 mA at 55 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Operating Current\u003c\/td\u003e\n\u003ctd\u003e2 mA at 10 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-state Input Current\u003c\/td\u003e\n\u003ctd\u003e1.5 mA max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (5 VDC)\u003c\/td\u003e\n\u003ctd\u003e275 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current (24 VDC)\u003c\/td\u003e\n\u003ctd\u003e2 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Backplane Power\u003c\/td\u003e\n\u003ctd\u003e5.5 W max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Blocks\u003c\/td\u003e\n\u003ctd\u003e1756-TBCH, 1756-TBS6H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003e16-point individual isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eControlLogix Backplane Bus Communication and Sequence of Events Time-Stamping\u003c\/h3\u003e\n\u003cp\u003eThe module interfaces with ControlLogix backplane via deterministic slot-based bus arbitration, where each input transition is captured and time-stamped at hardware acquisition stage prior to controller scan integration. Event records are buffered and transferred into controller memory through cyclic backplane transactions.\u003c\/p\u003e\n\u003cp\u003eSequence of Events processing is executed at module level, enabling per-point transition logging independent of controller scan time. Backplane communication velocity and chassis scheduling define transfer latency of event frames into PLC memory structures.\u003c\/p\u003e\n\u003cp\u003eI\/O mapping is fixed per chassis slot assignment, with module recognition dependent on ControlLogix firmware compatibility during backplane enumeration. Channel isolation ensures electrical separation prior to event timestamp encoding.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 1756-IB16ISOE support hardware-based event time stamping independent of PLC scan cycle?\u003cbr\u003eA: Yes. Input transitions are captured at module hardware level with 50 microseconds base delay before transfer to ControlLogix backplane memory, decoupled from controller scan execution timing.\u003c\/p\u003e\n\u003cp\u003eQ: What is the backplane current consumption under full channel utilization?\u003cbr\u003eA: The module draws 275 mA at 5 VDC and 2 mA at 24 VDC from the ControlLogix backplane during operation with all 16 channels active.\u003c\/p\u003e\n\u003cp\u003eQ: Can the module operate during chassis hot-swap events?\u003cbr\u003eA: Hot-swap is dependent on ControlLogix chassis configuration. Input state integrity is not guaranteed during module removal due to interruption of backplane event buffering.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the module in a compatible ControlLogix chassis with stable backplane voltage prior to energizing field inputs. Ensure full engagement of 1756-TBCH or 1756-TBS6H terminal blocks to maintain all 16 isolated SOE input channels.\u003c\/p\u003e\n\u003cp\u003eMaintain strict separation between high-speed switching circuits and SOE input wiring to reduce induced transient coupling affecting transition detection. Shield termination shall be bonded at single-point ground reference within control cabinet structure.\u003c\/p\u003e\n\u003cp\u003eVerify input channel mapping and timestamp configuration in ControlLogix programming environment prior to system commissioning. Avoid mixed reference grounding across input groups to preserve isolation integrity and timing accuracy.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43601193140314,"sku":"1756-IB16ISOE","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1756-IB16ISOE2.jpg?v=1783307262","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1756-ib16isoe-controllogix-sequence-of-events-input-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}