{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CS1W-CTS21","brand":"Omron","brandSlug":"omron","productSlug":"CS1W-CTS21","canonicalUrl":"https://aoctrl.com/omron/CS1W-CTS21","factsUrl":"https://aoctrl.com/api/mcp/products/CS1W-CTS21","rawCanonicalId":null},"summary":{"shortDescription":"Omron CS1W-CTS21, Interface Module, CS1W Series, Backplane Mount, D-Sub, 4 Digital Inputs, 4 Solid State Outputs.","salesMarkdown":"CS1W-CTS21 is an Interface Module for Omron's CS Series PLCs. It mounts on the backplane and provides 4 digital inputs and 4 solid state outputs, terminated via D-Sub connector. Operating range 0°C to 55°C – rated for cabinet use. Solid state outputs mean no mechanical contacts to wear – good for frequent switching or low-power DC loads. The D-Sub termination keeps field wiring tidy if your cabinet uses pre-made cables. ## Integration checklist Mounts into the CS1W backplane – no DIN rail needed. D-Sub connection: use a shielded cable for noisy environments. Ground the shield at the panel end only. Power from the backplane; no separate supply needed. Wire 4 digital inputs (sink/source compatible with CS series) and 4 solid state outputs (check output voltage/current limits from the CS1W manual, not listed here). The module addresses automatically in the IO table – configure via CX-Programmer.","metaTitle":"Omron CS1W-CTS21 Interface Module, 4DI/4DO Solid State","metaDescription":"Interface module for CS1W series. 4 digital inputs, 4 solid state outputs, D-Sub. Active but EOL hot stage – plan sourcing accordingly. RFQ for current lead time.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["PLCs (Programmable Logic Controllers)"],"specifications":{"Type":"Interface Module","Series":"CS1W","Weight":"0.507 lb (229.97 g)","Package":"Bulk","Mounting Type":"Backplane","lifecycle_stage":"eol_hot","Termination Style":"D-Sub","Operating Temperature":"0°C~55°C","Number of Inputs and Type":"4 - Digital","Number of Outputs and Type":"4 - Solid State","For Use With/Related Products":"CS Series"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1,046.86 – $1,950.71","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/CS1W-CTS21/alternatives.json"},"ai":{"faq":[{"question":"What type and series is this part?","answer":"It is an Interface Module belonging to the CS1W series, for use with Omron CS Series PLCs."},{"question":"Will CS1W-CTS21 drop into a panel wired for CS1W-CT021?","answer":"Physically it fits the same backplane and D-Sub connector, but the function is different. You would need to rewire and reconfigure the IO table. It is not a simple swap."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/omron/CS1W-CTS21","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-CTS21 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}}