{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"CJ2M-CPU11","brand":"Omron","brandSlug":"omron","productSlug":"CJ2M-CPU11","canonicalUrl":"https://aoctrl.com/omron/CJ2M-CPU11","factsUrl":"https://aoctrl.com/api/mcp/products/CJ2M-CPU11","rawCanonicalId":null},"summary":{"shortDescription":"Omron CJ2M-CPU11 CPU unit, 64K words memory, RS-232C / USB, 5000 steps, DIN-rail mount, battery backup, CE/cULus/Lloyd/NK approved.","salesMarkdown":"## 64K words, 5000 steps — the entry-level CJ2M CPU The Omron CJ2M-CPU11 is the base CPU in the CJ2M series, built for machine control applications that need deterministic scan cycles and a compact DIN-rail footprint. It carries 64K words of program memory and 5000 steps of logic capacity — enough for mid-size sequencing, motion coordination over the CJ-series backplane, and fieldbus master functions via an optional communications module. Two built-in serial ports — RS-232C and USB — give the integrator a direct programming connection and a Modbus-RTU or serial-peripheral link without an extra slot card. The USB port is the primary CX-One programming channel; the RS-232C port can talk to an HMI, a barcode scanner, or a drive string. ## Expansion ceiling and battery-backed retentive memory The CJ2M-CPU11 supports up to 40 expansion modules across three racks — that covers a full I/O complement plus specialty slices (temperature, positioning, serial, Ethernet/IP, EtherCAT) without hitting the backplane power budget. The battery backup holds the program and retentive data through power cycles; the battery is user-replaceable and the CPU flags a low-battery alarm on the CX-One diagnostics screen. ## Active lifecycle and approvals — no end-of-line risk Sourced through independent distribution channels, quoted to order against the BOM quantity. No minimum order quantity beyond the unit itself.","metaTitle":"Omron CJ2M-CPU11 PLC CPU, 64K Words, RS-232C/USB","metaDescription":"Omron CJ2M-CPU11 PLC CPU unit with 64K words memory, RS-232C and USB ports. Active production, DIN-rail mount, supports 40 modules.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["PLCs (Programmable Logic Controllers)"],"specifications":{"title":"CJ2M-CPU11","Series":"CJ2M","Weight":"0.287 lb (130.18 g)","Package":"Box","Features":"Battery Backup","Software":"CX-One","Expandable":"40 Modules (3 Racks) Max","Memory Size":"64K Words","description":"CPU Unit, RS-232C / USB, 5000 Steps","Display Type":"No Display","Mounting Type":"DIN Rail","Communications":"RS-232C, USB","Approval Agency":"CE, cULus, Lloyd, NK","lifecycle_stage":"mature","Operating Temperature":"0°C ~ 55°C"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$182.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between CJ2M-CPU11 and CJ2M-CPU35?","answer":"The CJ2M-CPU11 has 64K words of memory and 5000 steps of program capacity. The CJ2M-CPU35 (not detailed here) is a higher-end variant in the same series with larger memory — typically 160K words — for bigger application code and data tables."},{"question":"What expansion modules are compatible with the CJ2M-CPU11?","answer":"Any CJ-series expansion module is compatible — digital I/O, analog, temperature, position, serial, Ethernet/IP, and EtherCAT slices. The CPU supports up to 40 modules across three racks."},{"question":"What CX-Programmer version is compatible with CJ2M-CPU11 firmware?","answer":"The CJ2M-CPU11 is programmed within the CX-One software suite, which includes CX-Programmer. Omron recommends CX-One version 4.0 or later for full support of CJ2M CPU features."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/CJ2M-CPU11","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/CJ2M-CPU11 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}}