{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CJ1W-DRM21","brand":"Omron","brandSlug":"omron","productSlug":"CJ1W-DRM21","canonicalUrl":"https://aoctrl.com/omron/CJ1W-DRM21","factsUrl":"https://aoctrl.com/api/mcp/products/CJ1W-DRM21","rawCanonicalId":null},"summary":{"shortDescription":"Omron CJ1W-DRM21, Communications Module, DeviceNet fieldbus slave for CJ Series PLCs, DIN rail mount, screw terminal wiring.","salesMarkdown":"## DeviceNet fieldbus interface for CJ Series racks The Omron CJ1W-DRM21 is a DeviceNet communications module that slots into a CJ Series PLC rack, letting the CPU talk to remote I/O blocks, VFDs, sensors, and actuators on a DeviceNet network. ## Lifecycle reality for procurement For a BOM freeze or last-time-buy decision, confirm the DeviceNet master and node configuration before committing to a surplus buy. The module snaps onto a DIN rail inside the control panel and connects to the CJ-series backplane via the rack's internal bus connector — no separate power supply wiring for the communications interface. Screw terminals on the front face accept the DeviceNet trunk cable (V+, CAN_H, CAN_L, V-, shield) and the network terminator resistor if the module is at an end node.","metaTitle":"Omron CJ1W-DRM21 Communications Module, DeviceNet, DIN Rail","metaDescription":"Omron CJ1W-DRM21 DeviceNet communications module for CJ Series PLCs. DIN rail mount, screw terminals. Sourced to order against 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-DRM21","Series":"CJ1W","Weight":"0.261 lb (118.39 g)","Package":"Box","description":"COMMUNICATIONS MODULE","Mounting Type":"DIN Rail","lifecycle_stage":"eol_hot","Termination Style":"Screw Terminal","For Use With/Related Products":"CJ Series"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$703.00 – $1,154.17","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/490c9448aacb20bb2a65ccfe2ffff8da.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the Omron CJ1W-DRM21 used for?","answer":"The CJ1W-DRM21 is a DeviceNet communications module for Omron CJ Series PLCs. It acts as a fieldbus slave interface, allowing the PLC CPU to exchange data with remote DeviceNet devices such as I/O blocks, drives, and sensors over a single twisted-pair network."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/CJ1W-DRM21","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-DRM21 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}}