{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"QD77MS4","brand":"Mitsubishi Electric","brandSlug":"mitsubishi","productSlug":"QD77MS4","canonicalUrl":"https://aoctrl.com/mitsubishi/QD77MS4","factsUrl":"https://aoctrl.com/api/mcp/products/QD77MS4","rawCanonicalId":null},"summary":{"shortDescription":"Mitsubishi MELSEC Q Series, Simple Motion Module, QD77MS4, 4 axes, 0.88ms operation cycle, 32 I/O occupancy.","salesMarkdown":"## What This Module Does in a Q-Series Rack The QD77MS4: Control units include mm, inch, degree, and PLS (pulse), so it interfaces with most servo drives that accept pulse-train or direction commands. Flash ROM stores parameters and can handle 100,000 write cycles before wearing out. ## How It Stacks Up Against the FX5-80SSC-S The FX5-80SSC-S is the closest functional cousin but sits in the iQ-F family. The QD77MS4 drives 4 axes from the Q backplane; the FX5 handles 8 axes and needs an external 24V supply. The QD77MS4 occupies 32 I/O points; the FX5 takes just 8. More important: they use different rack interfaces — you can't pull the FX5 and drop in the QD77MS4 without changing the PLC platform. Running both in a panel means separate power and addressing schemes. Lifecycle is 'mature' — active in-production part. No phase-out or discontinuation.","metaTitle":"Mitsubishi QD77MS4 Simple Motion Module, 4-Axis","metaDescription":"Mitsubishi QD77MS4 Simple Motion Module for Q-series PLC. 4-axis control, 0.88ms cycle, PTP/path/speed control. Lifecycle mature — active production. 32 I/O points, 0.6A at 5VDC ba","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLC I/O & Expansion Modules"],"specifications":{"title":"QD77MS4","Weight":"0.16 Kg","Product No.":"QD77MS4","description":"Simple Motion Module","Control unit":"mm, inch, degree, PLS","Product Type":"Simple Motion Module","Control method":"PTP (Point To Point) control, path control (both linear and arc can be set), speed control, speed-position switching control, position-speed switching control, speed-torque control","Operation cycle":"0.88ms/1.77ms","Shipping weight":"1.5 Kg","lifecycle_stage":"mature","Estimated Lead Time":"Usually ships in 1 - 10 working days.","Number of control axes":"4 axes","Flash ROM write count Max.":"100000 times","Number of occupied I/O points [points]":"32 (I/O assignment: Intelligent function module 32 points)","Internal current consumption (5 V DC) [A]":"0.6"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1,315.00 – $1,513.97","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/007d988174f5d33823f0354040f040b8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can the QD77MS4 be used as a replacement for the FX5-80SSC-S?","answer":"No—the QD77MS4 is a MELSEC Q-series module and the FX5-80SSC-S is an iQ-F series module. They use different backplane interfaces, power supplies, and I/O occupancy. A panel wired for one cannot accept the other without a PLC platform change."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/mitsubishi/QD77MS4","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/QD77MS4 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}}