{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CJ1W-CTS21-E","brand":"Omron","brandSlug":"omron","productSlug":"CJ1W-CTS21-E","canonicalUrl":"https://aoctrl.com/omron/CJ1W-CTS21-E","factsUrl":"https://aoctrl.com/api/mcp/products/CJ1W-CTS21-E","rawCanonicalId":null},"summary":{"shortDescription":"Omron CJ1W-CTS21-E Counter Module, 2 Digital Inputs, Screw Terminal, DIN Rail Mount, 0 to 55°C.","salesMarkdown":"The CJ1W-CTS21-E: This is a two-input counter module for Omron's CJ-series PLC, accepting up to 2 digital pulse trains for position or event counting. Mounts on the CJ backplane via DIN rail, wired with screw terminals for field-side connections. Operates reliably within 0°C to 55°C ambient, suitable for control cabinet environments. DIN-rail mount, no additional bracket needed. Use the designated backplane slot; power drawn from the CJ-bus. Screw terminals accept field wiring for encoder or switch inputs. Maintain proper shielding for high-frequency count lines.","metaTitle":"Omron CJ1W-CTS21-E Counter Module, 2 Digital Inputs, Screw T","metaDescription":"Omron CJ1W-CTS21-E counter module, 2 digital inputs, screw terminal, DIN rail mount, 0-55°C operating temp. Active production. RFQ for sourcing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["PLCs (Programmable Logic Controllers)"],"specifications":{"Type":"Counter Module","Series":"CJ1W","Weight":"0.441 lb (200.03 g)","Package":"Bulk","Mounting Type":"DIN Rail","lifecycle_stage":"eol_hot","Termination Style":"Screw Terminal","Operating Temperature":"0°C~55°C","Number of Inputs and Type":"2 - Digital","For Use With/Related Products":"CJ Series"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$435.61 – $1,300.48","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/89ff2827479912eaf5b18779653b4e28.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/CJ1W-CTS21-E/alternatives.json"},"ai":{"faq":[{"question":"What is the function of the CJ1W-CTS21-E?","answer":"It is a Counter Module with two digital inputs, designed for the Omron CJ-series PLC platform."},{"question":"Does the CJ1W-CTS21-E mount on a DIN rail?","answer":"Yes, mounting type is DIN Rail."},{"question":"Can the CJ1W-CTS21-E replace an analog input module like the CJ1W-PTS15?","answer":"No. The CJ1W-PTS15 is an Analog Input Module with different wiring and I/O mapping; the CTS21-E is a counter module and cannot perform analog measurements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/omron/CJ1W-CTS21-E","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/CJ1W-CTS21-E 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}}