{"product_id":"allen-bradley-1756hp-time-b-time-synchronization-module","title":"Allen-Bradley 1756HP-TIME\/B Time Synchronization Module","description":"\u003ch1\u003eAllen-Bradley 1756HP-TIME\/B Time Synchronization Module\u003c\/h1\u003e\n\u003cp\u003eConfigured for precise time alignment in ControlLogix distributed control environments, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1756HP-TIME\/B\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(\u003cstrong\u003e1756HP-TIME\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003etime synchronization module) provides direct physical and protocol-level time distribution across backplane-connected controllers and external network time sources. The module executes IEEE 1588 PTP and NTP time stamping functions within the ControlLogix 1756 chassis architecture, enabling deterministic event correlation across automation nodes.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cp\u003eNo official manufacturer-published suffix decomposition is provided for 1756HP-TIME\/B. The “\/B” revision is treated as hardware or firmware iteration within the HiProm module family without functional redefinition in available technical data.\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\u003e1756HP-TIME\/B\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\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard ControlLogix 1756 module form factor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 deg C to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 2.5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTime Source\u003c\/td\u003e\n\u003ctd\u003eGPS or external NTP\/PTP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtocols Supported\u003c\/td\u003e\n\u003ctd\u003eIEEE 1588 Precision Time Protocol (PTP), NTP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Interface\u003c\/td\u003e\n\u003ctd\u003eControlLogix chassis backplane bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSynchronization Accuracy\u003c\/td\u003e\n\u003ctd\u003eSub-millisecond class alignment across nodes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eControlLogix Backplane Time Distribution Behavior\u003c\/h3\u003e\n\u003cp\u003eThe 1756HP-TIME\/B operates as a time authority node within the ControlLogix backplane architecture, distributing synchronized timestamps through deterministic backplane communication cycles. In multi-chassis systems, time alignment is maintained through external reference inputs (GPS or NTP\/PTP), while internal logic aligns module-level scheduling to controller scan cycles.\u003c\/p\u003e\n\u003cp\u003eThe module integrates into the 1756 platform communication layer, where backplane timing is exchanged alongside cyclic I\/O updates and controller task execution windows.\u003c\/p\u003e\n\u003cp\u003eIn systems utilizing EtherNet\/IP, external time synchronization can be aligned with PTP boundary clock behavior, allowing coordinated timestamping between distributed controllers and remote I\/O nodes.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 1756HP-TIME\/B support hot-swap replacement in a powered ControlLogix chassis?\u003cbr\u003eA: The module follows standard ControlLogix hot-swap rules. Replacement behavior depends on chassis configuration and controller scan state.\u003c\/p\u003e\n\u003cp\u003eQ: How does the module prioritize NTP versus IEEE 1588 PTP time sources?\u003cbr\u003eA: Source selection is governed by system configuration and synchronization hierarchy defined in the ControlLogix time service settings.\u003c\/p\u003e\n\u003cp\u003eQ: Can multiple 1756HP-TIME\/B modules operate in the same backplane?\u003cbr\u003eA: Only one primary time authority configuration is typically active per chassis scope, while additional modules may remain in standby depending on system design.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the module only in a compatible ControlLogix 1756 chassis slot with proper backplane seating. Ensure full insertion into the backplane connector to maintain deterministic timing communication.\u003c\/p\u003e\n\u003cp\u003eFor GPS-based synchronization, route antenna cabling away from high-noise power conductors and variable frequency drive outputs. Maintain continuous shielding continuity and ground termination at a single reference point to reduce timing jitter induced by EMI coupling.\u003c\/p\u003e\n\u003cp\u003eFor NTP\/PTP deployments, verify network segmentation and switch configuration support for time-sensitive traffic. Avoid unmanaged switching paths that may introduce variable latency into synchronization streams.\u003c\/p\u003e\n\u003cp\u003eDo not install adjacent to high-thermal modules without observing chassis airflow distribution constraints defined by system-level installation standards.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43585679917146,"sku":"1756HP-TIME\/B","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1756HP-TIMEB2.jpg?v=1783061017","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1756hp-time-b-time-synchronization-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}