{"product_id":"honeywell-51400667-100-local-control-network-interface-board","title":"Honeywell 51400667-100 Local Control Network Interface Board","description":"\u003cp\u003eThe \u003cstrong\u003eHoneywell 51400667-100\u003c\/strong\u003e serves as the primary \u003cstrong\u003e51400667-100\u003c\/strong\u003e Local Control Network (LCN) Interface Board utilized to execute node configuration and real-time protocol bridging across Local Control Network platforms using older non-integrated processors. Configured as a high-integrity communication node, this board handles synchronous data frame serialization natively at the physical tier, allowing older processing architectures to map internal data registers directly onto the high-speed token-passing network parallel to central system updates.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\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\u003e51400667-100 (51400667100)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.00 lbs (0.91 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard rack-mounted LCN co-axial board form factor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C (Standard control room equipment bay parameters)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eSourced directly from host chassis auxiliary DC bus rails\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Network Type\u003c\/td\u003e\n\u003ctd\u003eLocal Control Network (LCN) coaxial token-ring interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNode Compatibility\u003c\/td\u003e\n\u003ctd\u003eNon-integrated legacy processor configurations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Lifecycle Status\u003c\/td\u003e\n\u003ctd\u003eDiscontinued by manufacturer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eDistributed Control System Boards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProcess Control \u0026amp; Network Interface Dynamics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Bus Communication Velocity and Token Serialization\u003c\/strong\u003e The 51400667-100 synchronizes the slower, non-integrated internal processing cycles with the constant bit-rate of the LCN coaxial highway. The board features dedicated dual-ported memory registers that latch incoming processor variables, packetizing them into high-speed deterministic frames to match network traffic speed without adding variable communication latency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfinet \/ EtherNet\/IP Deterministic Networks Alignment\u003c\/strong\u003e While designed for legacy token-passing coaxial lines, the board manages data using strict network timing rules. The onboard transceiver components handle physical address verification and token-holding windows directly, preventing configuration variations in older hardware modules from causing frame collisions or jitter on the main distributed control system network.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What specific hardware behaviors manifest if the LCN Interface Board encounters an absolute coaxial signal loss on its primary port?\u003c\/p\u003e\n\u003cp\u003eA: The onboard network controller detects the drop in carrier frequency, marks the active port register as faulted, and shifts transceiving operations to the redundant B-channel connector within microseconds. This immediate switch ensures the node configuration remains active while updating the system diagnostic block with an unmasked cable fault.\u003c\/p\u003e\n\u003cp\u003eQ: Can this 2.00 lbs LCN interface card be hot-swapped while the associated legacy node is actively running process monitoring loops?\u003c\/p\u003e\n\u003cp\u003eA: No. Because this card manages critical address mapping and token serialization for non-integrated processors, removing it while the rack is powered will break the node loop. This action immediately stops all network communication for that node and can cause token rotation errors across the entire local area network segment.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":47699753500862,"sku":"51400667-100","price":320.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/screenshot_2026-06-23_15-11-45_31fe3ca0-9a5b-43a4-b373-87d106eff175.png?v=1782201702","url":"https:\/\/www.autooiltech.com\/ar\/products\/honeywell-51400667-100-local-control-network-interface-board","provider":"AutoOilTech Limited","version":"1.0","type":"link"}