{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CS1W-EIP21","brand":"Omron","brandSlug":"omron","productSlug":"CS1W-EIP21","canonicalUrl":"https://aoctrl.com/omron/CS1W-EIP21","factsUrl":"https://aoctrl.com/api/mcp/products/CS1W-EIP21","rawCanonicalId":null},"summary":{"shortDescription":"Omron CS1W Series, Communications Module, Ethernet/IP, Backplane Mount, RJ45, CE, cULus, Lloyd, NK.","salesMarkdown":"The Omron CS1W-EIP21 is a Communications Module for the CS Series programmable controllers, providing Ethernet/IP connectivity via a backplane mount and RJ45 termination. It carries CE, cULus, Lloyd, and NK approvals, making it suitable for machinery applications requiring marine-class or general industrial certification. This module is classified as obsolete per the manufacturer's lifecycle. No official replacement model has been published. Sourcing is through independent surplus channels; availability is quoted per RFQ. Confirm firmware revision and revision history with the seller to support any validation effort. ## Mounting and integration note The module snaps onto a CS Series CPU rack or expansion backplane. No additional DIN rail is required. When slotting into an existing configuration, verify the PLC program's network configuration to match the module's identity — the EIP21 appears as an Ethernet/IP adapter in the I/O table.","metaTitle":"Omron CS1W-EIP21 CS1W Ethernet/IP Module","metaDescription":"Omron CS1W-EIP21 communications module for CS Series, Ethernet/IP, backplane mount, RJ45. Obsolete. Sourced to order via RFQ. CE, cULus, Lloyd, NK approved.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["PLCs (Programmable Logic Controllers)"],"specifications":{"Type":"Communications Module","Series":"CS1W","Weight":"0.377 lb (171 g)","Package":"Bulk","Features":"Display","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":"$1,464.31 – $2,059.09","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/CS1W-EIP21/alternatives.json"},"ai":{"faq":[{"question":"What type of module is the CS1W-EIP21?","answer":"It is a Communications Module for Ethernet/IP connectivity."},{"question":"Will the CS1W-EIP21 work in a panel designed for the CS1W-DRM21-V1?","answer":"Both modules fit the same CS Series backplane mechanical slot, but the EIP21 uses Ethernet/IP protocol and RJ45 termination while the DRM21-V1 uses DeviceNet and screw terminals. The wiring and network configuration differ; they are not drop-in replacements."},{"question":"What approvals does the CS1W-EIP21 carry?","answer":"CE, cULus, Lloyd, and NK marine certifications."},{"question":"How can I source the CS1W-EIP21?","answer":"Because it is obsolete, sourcing requires an RFQ. Our channel can quote available units from surplus inventory."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/omron/CS1W-EIP21","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-EIP21 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}}