{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7374-2XH01-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7374-2XH01-0AA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7374-2XH01-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7374-2XH01-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-300 SM 374 simulator module, 6ES7374-2XH01-0AA0, 16 switches and 16 LEDs for simulating 16 inputs or 16 outputs or 8 inputs and 8 outputs, end-of-life (hot).","salesMarkdown":"## What the SM 374 does that a real I/O module can't The Siemens 6ES7374-2XH01-0AA0 is a simulator module for the S7-300 rack — it lets you test logic without wiring field devices. You configure it via DIP switches (16 of them) to act as 16 digital inputs, or 16 digital outputs, or 8 inputs plus 8 outputs; the 16 LEDs show the state of whichever channels you're using. It draws 80 mA from the 5 V DC backplane bus, so it loads the rack power supply about the same as a compact I/O slice, and dissipates only 0.35 W — no extra heat to manage in the enclosure.","metaTitle":"Siemens 6ES7374-2XH01-0AA0 SM 374 Simulator, EOL, 16 I/O","metaDescription":"Siemens 6ES7374-2XH01-0AA0 SM 374 simulator module for S7-300. EOL (hot). Simulates 16 inputs or 16 outputs or 8 in/8 out. 16 switches, 16 LEDs.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLC I/O & Expansion Modules"],"specifications":{"Depth":"120 mm","Width":"40 mm","Height":"125 mm","Weight, approx.":"190 g","lifecycle_stage":"eol_hot","Power loss, typ.":"0.35 W","Number of analog inputs":"0","Number of analog outputs":"0","Number of digital inputs":"16; Switch","Number of digital outputs":"16; LEDs","from backplane bus 5 V DC, max.":"80 mA","Between The Channels And Backplane Bus":"No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$471.17 – $534.00","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=459672&mlfb=6ES7374-2XH01-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7374-2XH01-0AA0/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for Siemens 6ES7374-2XH01-0AA0?","answer":"Siemens has not listed a direct replacement for this simulator module. For testing S7-300 logic, you would need to adapt the test setup to use a standard digital I/O module (e.g., SM 321 or SM 322) with field wiring or a test harness. The SM 374's unique value is the built-in switches and LEDs — no standard I/O slice provides that."},{"question":"How does the SM 374 simulate inputs and outputs?","answer":"The module has 16 DIP switches and 16 LEDs. You set the DIP switches to choose the mode: 16 inputs, 16 outputs, or 8 inputs plus 8 outputs. In input mode, the switches act as field signals to the CPU; in output mode, the LEDs follow the CPU's output image. This lets you verify logic without connecting any external wiring."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7374-2XH01-0AA0","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/6ES7374-2XH01-0AA0 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}}