{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7322-1EH01-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7322-1EH01-0AA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7322-1EH01-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7322-1EH01-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-300 SM 321 digital output module, 6ES7322-1EH01-0AA0, 16 DO, 120V AC, 0.5A, optically isolated, 20-pin front connector.","salesMarkdown":"## What this SM 321 module does in an S7-300 rack The Siemens 6ES7322-1EH01-0AA0 is a SIMATIC S7-300 SM 321 digital output module providing 16 channels of optically isolated 120V AC outputs at 0.5A per channel, terminated through a 20-pin front connector. Each output switches 120V AC loads — solenoids, contactor coils, indicator lamps — with optical isolation between the backplane and the field side, so a short on one channel won't take down the CPU bus. ## Lifecycle reality — EOL hot, plan the replacement now ## Sourcing this module — availability and next steps Because this is an EOL part, stock is finite and prices reflect scarcity — early commitment on the BOM quantity locks in supply before the channel dries up.","metaTitle":"Siemens 6ES7322-1EH01-0AA0 SM 321 16 DO 120V AC, EOL","metaDescription":"Siemens 6ES7322-1EH01-0AA0 SM 321 digital output module, 16 DO, 120V AC, 0.5A, optically isolated. EOL hot — 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":"eol_hot"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$237.49","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=519677&mlfb=6ES7322-1EH01-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7322-1EH01-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 6ES7322-1EH01-0AA0?","answer":"This EOL module is sourced to order against an RFQ through independent distribution."},{"question":"Does 6ES7322-1EH01-0AA0 work with S7-300?","answer":"Yes, it is a SIMATIC S7-300 SM 321 digital output module, designed to slot directly into an S7-300 rack and communicate over the backplane bus."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7322-1EH01-0AA0","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/6ES7322-1EH01-0AA0 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}}