{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7340-1BH00-0AE0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7340-1BH00-0AE0","canonicalUrl":"https://aoctrl.com/siemens/6ES7340-1BH00-0AE0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7340-1BH00-0AE0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-300 CP 340 communication processor, 6ES7340-1BH00-0AE0, 20 mA (TTY) interface, isolated, 1 024 byte ASCII buffer, 9.6 kbit/s max, end-of-life.","salesMarkdown":"## 20 mA TTY interface — the serial link for legacy field devices The 6ES7340-1BH00-0AE0: It supports ASCII and 3964(R) protocols — the ASCII channel tops out at 9.6 kbit/s, while 3964(R) can run at 19.2 kbit/s. The 1 024 byte buffer handles both ASCII and 3964(R) frames, enough for typical point-to-point telegrams from a scale or barcode reader. Maximum cable length is 1 000 m — 100 m for active TTY devices, 1 000 m for passive — giving flexibility for remote field devices in a plant. ## Physical fit and backplane loading The module occupies one S7-300 slot at 40 mm wide, 125 mm high, 120 mm deep — standard for the series. It draws 220 mA from the 5 V DC backplane bus, with a maximum power loss of 0.85 W — well within the S7-300 rack power budget. The configuration package ships on CD with the module, covering the CP 340 parameterisation in STEP 7.","metaTitle":"Siemens 6ES7340-1BH00-0AE0 CP 340, 20 mA TTY, EOL","metaDescription":"Siemens 6ES7340-1BH00-0AE0 CP 340 communication processor with 20 mA (TTY) interface for S7-300. End-of-life; 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.":"1 000 m; 100 m active, 1 000 m passive","Supported Printers":"HP-Deskjet, HP-Laserjet, IBM-Proprinter, user-defined","Interfaces/bus type":"20 mA (TTY)","Number of interfaces":"1; Isolated","FB length in RAM, max.":"2 700 byte; Data communication, sending and receiving","Transmission rate, max.":"9.6 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.":"220 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$159.33","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=306606&mlfb=6ES7340-1BH00-0AE0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7340-1BH00-0AE0/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7340-1BH00-0AE0","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/6ES7340-1BH00-0AE0 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}}