{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"Q25PRHCPU","brand":"Mitsubishi Electric","brandSlug":"mitsubishi","productSlug":"Q25PRHCPU","canonicalUrl":"https://aoctrl.com/mitsubishi/Q25PRHCPU","factsUrl":"https://aoctrl.com/api/mcp/products/Q25PRHCPU","rawCanonicalId":null},"summary":{"shortDescription":"Mitsubishi MELSEC-Q series Q25PRHCPU redundant CPU, 252K steps program capacity, 34 ns LD instruction, 0.5–2000 ms constant scan, 778 total instructions, memory card interface.","salesMarkdown":"## Redundant CPU for deterministic control The Q25PRHCPU is the redundant CPU in the MELSEC-Q [QnU] series, built for applications where a single CPU failure cannot stop the line. The 34 ns LD instruction and 102 ns MOV instruction define the scan floor — at 0.5 ms constant scan minimum, the CPU holds deterministic timing cycle after cycle, no jitter in the loop. Program capacity of 252K steps supports large machine sequences or process logic, and the 778 total instructions cover sequence control language and process control language. The memory card interface accepts SRAM, Flash, or ATA cards for program storage and backup. ## Scan cycle and I/O refresh Constant scan is settable from 0.5 to 2000 ms in 0.5 ms increments — the control method is stored program cyclic operation, so the scan time is predictable and repeatable. Floating point addition completes in 0.78 μs, and the PC MIX value of 10.3 (instruction/μs) gives a quick read on mixed-instruction throughput. I/O control mode is Refresh, meaning the CPU updates all I/O images in one batch per scan rather than direct access — this simplifies timing analysis for the controls integrator mapping the fieldbus slice.","metaTitle":"Mitsubishi Q25PRHCPU Redundant CPU, 252K Steps, 34 ns LD","metaDescription":"Mitsubishi MELSEC-Q Q25PRHCPU redundant CPU. 252K step program capacity, 34 ns LD, 0.5–2000 ms constant scan. Mature lifecycle; quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLCs (Programmable Logic Controllers)"],"specifications":{"title":"Q25PRHCPU","Q25PRHCPU":"Redundant CPU","description":"Programmable Controllers MELSEC-Q series [QnU]","Constant scan":"0.5…2000 ms (setting available in units of 0.5 ms)","Control method":"Stored program cyclic operation","LD instruction":"34 ns","MOV instruction":"102 ns","Shipping Weight":"2 Kg","lifecycle_stage":"mature","I/O control mode":"Refresh","Program capacity":"252K steps","Program language":"Sequence control language | Process control language","Estimated Lead Time":"1 - 10 Working Days","Memory card interface":"(SRAM card, Flash card, ATA card)","Floating point addition":"0.78 μs","Total number of instructions":"778","PC MIX value (instruction/μs)":"10.3"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4,000.00 – $7,354.57","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/a9696184b23ca25bf717e9973a9eda1f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the program capacity of the Q25PRHCPU?","answer":"The Q25PRHCPU has a program capacity of 252K steps, with 778 total instructions available in sequence control language or process control language."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/mitsubishi/Q25PRHCPU","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/mitsubishi/Q25PRHCPU 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}}