{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CJ1W-PRT21","brand":"Omron","brandSlug":"omron","productSlug":"CJ1W-PRT21","canonicalUrl":"https://aoctrl.com/omron/CJ1W-PRT21","factsUrl":"https://aoctrl.com/api/mcp/products/CJ1W-PRT21","rawCanonicalId":null},"summary":{"shortDescription":"Omron CJ1W-PRT21 Communications Module for CJ Series PLCs. DIN Rail mounting, D-Sub termination, 0°C to 55°C operating range.","salesMarkdown":"The Omron CJ1W-PRT21 is a Communications Module for the CJ Series PLC backplane. It occupies a single slot, mounts on standard DIN Rail, and terminates via a D-Sub connector. The card operates between 0°C and 55°C, which suits most cabinet interiors but not extended temperature zones. This module is a drop-in fit for anyone who already has a CJ1W rack and needs a Profibus–style D-Sub communication card. No adapter or extra hardware is needed beyond the backplane slot. ## Integration at the panel The PRT21 clips onto DIN rail and connects to the CJ backplane via the module's bus connector. D-Sub wiring is straightforward: standard Profibus connectors mate directly. There's no field-adjustable addressing on the module itself; configuration is handled through the PLC program (CX-Programmer or Sysmac Studio).","metaTitle":"Omron CJ1W-PRT21 Communications Module, DIN Rail","metaDescription":"Omron CJ1W-PRT21 Communications Module for CJ Series. DIN Rail, D-Sub termination, 0-55°C. Listed as Active; source to RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["PLCs (Programmable Logic Controllers)"],"specifications":{"Type":"Communications Module","title":"CJ1W-PRT21","Series":"CJ1W","Weight":"0.198 lb (89.81 g)","Package":"Bulk","description":"COMMUNICATIONS MODULE","Mounting Type":"DIN Rail","lifecycle_stage":"eol_hot","Termination Style":"D-Sub","Operating Temperature":"0°C~55°C","For Use With/Related Products":"CJ Series"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$575.41","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/12b20911ab35d34d198841f349959050.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What type of module is the CJ1W-PRT21?","answer":"It is a Communications Module (Type Communications Module) for the CJ Series."},{"question":"What series does the CJ1W-PRT21 belong to?","answer":"It is part of the Omron CJ1W series."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/CJ1W-PRT21","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-PRT21 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}