{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7340-1AH01-0AE0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7340-1AH01-0AE0","canonicalUrl":"https://aoctrl.com/siemens/6ES7340-1AH01-0AE0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7340-1AH01-0AE0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-300 CP 340 communication processor, RS232C (V.24) interface, 19.2 kbit/s max transmission rate, 1 024 byte ASCII buffer, 40 mm wide, EOL hot.","salesMarkdown":"## RS232C point-to-point link for legacy S7-300 racks The Siemens 6ES7340-1AH01-0AE0 is a CP 340 communication processor that fits a standard S7-300 slot (40 mm wide, 125 mm high, 120 mm deep) and provides one isolated RS232C (V.24) interface. It handles ASCII and 3964(R) protocols with a 1 024 byte buffer each, topping out at 19.2 kbit/s — enough for printer links, scale readouts, or barcode scanners on older lines. ## Lifecycle: end-of-line, sourced to order For a new design or a line migration, the S7-1500 platform offers CPs with higher baud rates and Ethernet connectivity, but those require a different backplane and engineering environment. ## What the baud and buffer mean for your device The interface is isolated, which helps avoid ground loops when the serial device is on a different power circuit — a common headache on plant floors with mixed 24 V and 120 V gear.","metaTitle":"Siemens 6ES7340-1AH01-0AE0 CP 340 RS232C, EOL","metaDescription":"Siemens 6ES7340-1AH01-0AE0 CP 340 communication processor for S7-300, RS232C (V.24), 19.2 kbit/s. EOL hot. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLC I/O & Expansion Modules"],"specifications":{"ASCII":"1 024 byte","Depth":"120 mm","Width":"40 mm","Height":"125 mm","3964 (R)":"1 024 byte","Weight, approx.":"300 g","lifecycle_stage":"eol_hot","Power loss, max.":"0.85 W","Cable length, max.":"15 m","Supported Printers":"HP-Deskjet, HP-Laserjet, IBM-Proprinter, user-defined","Interfaces/bus type":"RS 232C (V.24)","Number of interfaces":"1; Isolated","FB length in RAM, max.":"2 700 byte; Data communication, sending and receiving","Transmission rate, max.":"19.2 kbit/s","Transmission rate, min.":"2.4 kbit/s","With Printer Driver, Max.":"9.6 kbit/s","with ASCII protocol, max.":"9.6 kbit/s","with 3964 (R) protocol, max.":"19.2 kbit/s","from backplane bus 5 V DC, max.":"165 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$200.66 – $472.00","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=319028&mlfb=6ES7340-1AH01-0AE0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7340-1AH01-0AE0/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 6ES7340-1AH01-0AE0?","answer":"Submit your BOM quantity for a firm quote through the storefront."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7340-1AH01-0AE0","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/6ES7340-1AH01-0AE0 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}}