{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CS1W-ETN21","brand":"Omron","brandSlug":"omron","productSlug":"CS1W-ETN21","canonicalUrl":"https://aoctrl.com/omron/CS1W-ETN21","factsUrl":"https://aoctrl.com/api/mcp/products/CS1W-ETN21","rawCanonicalId":null},"summary":{"shortDescription":"Omron CS1W-ETN21 Communications Module, CS Series, 100BASE-TX Ethernet, Backplane Mount, RJ45, CE/cULus/Lloyd/NK.","salesMarkdown":"Omron CS1W-ETN21 is an Ethernet unit (100BASE-TX) for the CS Series PLC family, mounting on the backplane with an RJ45 connector. It carries approvals from CE, cULus, Lloyd, and NK, making it a fit for industrial and marine installations where those certifications are required. Production status is active per Omron. No end-of-life notice published; this module remains a standard catalog item. Sourcing is straightforward via quoted BOM orders. ## Integration notes Mounts on the CS Series backplane; no DIN rail required. RJ45 connection for Ethernet drop. Approved agencies include CE, cULus, Lloyd, and NK — inspect the specific project's compliance list against these.","metaTitle":"Omron CS1W-ETN21 Communications Module, Ethernet 100BASE-TX","metaDescription":"Active Omron CS1W-ETN21 Ethernet unit (100BASE-TX) for CS Series PLCs. Backplane mount, RJ45, CE/cULus/Lloyd/NK approvals. Sourced to BOM; request RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["PLCs (Programmable Logic Controllers)"],"specifications":{"Type":"Communications Module","Series":"CS1W","Weight":"0.441 lb (200.03 g)","Package":"Bulk","Mounting Type":"Backplane","Approval Agency":"CE, cULus, Lloyd, NK","lifecycle_stage":"eol_hot","Termination Style":"RJ45","For Use With/Related Products":"CS Series"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$635.00","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c42a3b59869e077945dabc1a8c5a87d9.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/CS1W-ETN21/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to the CS1W-ETN21?","answer":"The CS1W-FLN22 is a similar communications module for the CS Series, but it lacks Lloyd and NK approvals and supports a different network protocol. Verify functional compatibility before swapping."},{"question":"What type of module is the CS1W-ETN21?","answer":"It is a Communications Module, specifically an Ethernet unit (100BASE-TX)."},{"question":"What series does the CS1W-ETN21 belong to?","answer":"It belongs to the Omron CS1W series, for CS Series PLCs."},{"question":"What compliance and approvals does the CS1W-ETN21 carry?","answer":"It carries CE, cULus, Lloyd, and NK approvals."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/omron/CS1W-ETN21","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/omron/CS1W-ETN21 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}