{"product_id":"omron-cj1w-clk23-cj-series-controller-link-unit","title":"Omron CJ1W-CLK23 CJ Series Controller Link Unit","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eManaging high-capacity peer-to-peer data transfers and message services across industrial networks, the \u003cstrong\u003eOmron CJ1W-CLK23\u003c\/strong\u003e serves as a dedicated Controller Link interface module designed for the Sysmac CJ PLC platform. By implementing a deterministic N:N token-bus method, this communication module enables seamless, real-time data exchange between CJ-series CPU units. It utilizes flag synchronization conforming to HDLC frames to guarantee highly reliable transmission over wired shielded twisted-pair cabling. Designed for flexible network scaling, it supports segmented architectures and multi-node configurations directly from the PLC backplane.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDeterministic Token-Bus Protocol:\u003c\/strong\u003e Utilizes the N:N token-bus access control method for structured, collision-free industrial data traffic.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual-Mode Communication:\u003c\/strong\u003e Supports both high-volume data links for cyclic variables and explicit messaging services for event-driven diagnostics.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Node Density:\u003c\/strong\u003e Allows flexible node configurations accommodating up to 62 nodes depending on network topology.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Backplane Capacity:\u003c\/strong\u003e Supports up to 8 Controller Link modules mounted on a single CJ-series CPU rack.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRobust Signal Synchronization:\u003c\/strong\u003e Features hardware-level flag synchronization conforming to HDLC framing standards.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli\u003eDistributed manufacturing line synchronization and inter-PLC coordination.\u003c\/li\u003e\n  \u003cli\u003eSCADA and industrial workstation communication backbones.\u003c\/li\u003e\n  \u003cli\u003eHigh-speed process network clustering requiring deterministic data packet delivery.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; width: 100%; margin-bottom: 1.5rem;\"\u003e\n  \u003ctable style=\"border-collapse: collapse; width: 100%; color: #2d3748; border: 1px solid #e2e8f0; font-family: sans-serif;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"border-bottom: 2px solid #e2e8f0;\"\u003e\n        \u003cth style=\"padding: 10px; text-align: left; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"padding: 10px; text-align: left; font-weight: bold;\"\u003eSpecification\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0; width: 35%;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eOmron\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eModel \/ SKU\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eCJ1W-CLK23\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eApplicable PLCs\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eAll CJ-series CPU Units\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eCommunication Medium\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eWired shielded twisted-pair (STP) cable\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eCommunication Access Method\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eN:N token-bus method\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eData Synchronization Type\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eFlag synchronization (conforms to HDLC frames)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eNetwork Topology\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003eMultidrop method (bus type)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eNode Capacity\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e32 or 62 nodes (determined by network parameters)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eMax Units per CPU\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e8\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eInternal Current Consumption\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e0.35 A at 5 VDC from PLC bus\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eWeight\u003c\/td\u003e\n        \u003ctd style=\"padding: 10px;\"\u003e0.11 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"border-bottom: 1px solid #e2e8f0;\"\u003e\n        \u003ctd style=\"padding: 10px; font-weight: bold; border-right: 1px solid #e2e8f0;\"\u003eShipping Weight (Calculated)\u003c\/td\u003e\n        \u003ctd style=\"padding: 1.15 kg;\"\u003e1.15 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eAlternative Models \u0026amp; Compatibility\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eThe CJ1W-CLK23 is directly compatible with standard Sysmac CJ-series systems, including CJ1G, CJ1H, and CJ2M controllers. It serves as a direct upgrade to older-generation Controller Link units, providing improved message buffer handshakes and diagnostic routing efficiency. Always ensure your CPU unit's firmware and CX-Programmer software are updated to support the full routing table configurations enabled by this unit.\u003c\/p\u003e\n\n\u003ch3\u003eApplication Pitfalls \u0026amp; Engineering Notes\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eA common issue in Controller Link networks is duplicate node setting. The node address is set via rotary switches on the front of the unit; duplicate node addresses will prevent the unit from joining the token ring. Furthermore, since the module draws 0.35 A from the backplane 5 VDC supply, power budget calculations must be verified prior to installation, especially when mounting multiple communication modules on a single rack.\u003c\/p\u003e\n\n\u003ch3\u003eCommissioning \u0026amp; Wiring Tips\u003c\/h3\u003e\n\u003cp style=\"color: #2d3748; margin-bottom: 1rem;\"\u003eTo ensure stable, noise-tolerant communication:\n\u003c\/p\u003e\u003cul style=\"list-style-type: square; color: #2d3748; margin-bottom: 1.5rem; padding-left: 1.5rem;\"\u003e\n  \u003cli\u003eAlways enable the terminating resistance switches at both physical ends of the Controller Link trunk line. Keep all intermediate node terminating switches set to OFF.\u003c\/li\u003e\n  \u003cli\u003eGround the shield of the twisted-pair cable at one single point in the network layout to avoid hazardous ground loops.\u003c\/li\u003e\n  \u003cli\u003eRoute the communication cable in a separate conduit from high-voltage motor wiring or VFD cables to minimize electromagnetic interference (EMI).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\n\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\n\u003cdiv style=\"background-color: #fff5f5; border-left: 4px solid #c53030; padding: 1rem; margin-bottom: 1.5rem;\"\u003e\n  \u003cstrong style=\"color: #9b2c2c; display: block; margin-bottom: 0.5rem;\"\u003eCRITICAL WARNING: SAFETY COMPLIANCE\u003c\/strong\u003e\n  \u003cspan style=\"color: #9b2c2c;\"\u003eAlways shut down the PLC power supply and bleed all residual charges before inserting, removing, or wiring the Controller Link Unit. Failure to completely de-energize the assembly can cause backplane hardware damage or communication processor corruption.\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"display: flex; flex-direction: column; gap: 1rem;\"\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; min-width: 2rem; height: 2rem; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e1\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eConfigure the Unit Number and Node Address using the rotary switches on the front panel prior to physically mounting the module.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; min-width: 2rem; height: 2rem; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e2\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eAlign the upper and lower hooks of the CJ1W-CLK23 with the adjacent module or CPU rack connector, pushing until the module locks securely into position.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; min-width: 2rem; height: 2rem; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e3\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eSecure the module lock levers at both the top and bottom of the rack assembly.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv style=\"display: flex; align-items: flex-start; gap: 1rem;\"\u003e\n    \u003cdiv style=\"background-color: #2b6cb0; color: #ffffff; border-radius: 50%; min-width: 2rem; height: 2rem; display: flex; align-items: center; justify-content: center; font-weight: bold;\"\u003e4\u003c\/div\u003e\n    \u003cp style=\"color: #2d3748; margin: 0;\"\u003eConnect the wired Controller Link network cable to the terminal block, ensuring correct terminal polarity and that the shielding layout is properly terminated.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Omron","offers":[{"title":"Default Title","offer_id":53077901738347,"sku":"CJ1W-CLK23","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/CJ1W-CLK23-jyvrgg5hub4.png?v=1775733495","url":"https:\/\/www.plcprotech.com\/fa\/products\/omron-cj1w-clk23-cj-series-controller-link-unit","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}