{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7422-1FF00-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7422-1FF00-0AA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7422-1FF00-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7422-1FF00-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-400, SM 422 digital output module, optically isolated, 8 DO, 120/230V AC, 5A.","salesMarkdown":"## Module overview and fit The Siemens 6ES7422-1FF00-0AA0 is an SM 422 digital output module for the S7-400 programmable logic controller. It provides 8 discrete outputs rated at 5 A each for 120/230 V AC loads, with optical isolation between the backplane and field wiring. This is the module you slot into a 400-series rack when you need to switch high-voltage AC actuators — contactors, solenoid valves, motor starters — directly from the PLC, without an interposing relay bank. The 5 A per channel at 120/230 V AC is a per-point rating, not a group total — each output can switch a load drawing up to 5 A continuously. For a typical 230 V AC contactor coil drawing 0.5 A inrush and 0.1 A hold, that leaves plenty of headroom. The optical isolation means the 24 V DC backplane side is galvanically separated from the AC field side, which simplifies troubleshooting and protects the CPU from field-side transients. ## Integration notes Mounts in any S7-400 rack slot; the backplane connector provides the 24 V DC logic supply and communicates over the P-bus. The field-side wiring terminates on the front connector (screw-type, supplied with the module). The 120/230 V AC outputs share a common supply terminal — verify the neutral and phase assignment against your panel schematic before commissioning.","metaTitle":"Siemens 6ES7422-1FF00-0AA0 SM 422 Digital Output Module, 8 D","metaDescription":"SIMATIC S7-400 SM 422 digital output module, 8 outputs at 120/230V AC, 5A, optically isolated. Mature lifecycle stage. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Digital Output Modules"],"specifications":{"lifecycle_stage":"mature"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$650.33","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=348999&mlfb=6ES7422-1FF00-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7422-1FF00-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative in the S7-400 family?","answer":"Within the S7-400 SM 422 range, the 6ES7422-1FF00-0AA0 is the only 8-output, 5 A, 120/230 V AC module. A lower-current sibling (e.g., 2 A per channel) exists but is not pin-compatible — the output rating and internal fuse layout differ. For a direct replacement, stick with this order code."},{"question":"What compliance documentation is available for this module?","answer":"The module carries CE marking for the European market and UL/CSA recognition for North America. RoHS and REACH declarations are available from Siemens on request. The optical isolation meets IEC 61131-2 requirements for digital I/O modules."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7422-1FF00-0AA0","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/6ES7422-1FF00-0AA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}