{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7340-1BH02-0AE0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7340-1BH02-0AE0","canonicalUrl":"https://aoctrl.com/siemens/6ES7340-1BH02-0AE0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7340-1BH02-0AE0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-300 CP 340 Communications Processor, 20 mA (TTY) interface, isolated, 19.2 kbit/s max, 6ES7340-1BH02-0AE0.","salesMarkdown":"## What this CP 340 does in an S7-300 rack The Siemens 6ES7340-1BH02-0AE0 is a CP 340 communications processor for the SIMATIC S7-300 platform, providing a single isolated 20 mA (TTY) interface for serial point-to-point links. It handles ASCII protocol up to 9.6 kbit/s and the 3964 (R) protocol up to 19.2 kbit/s, with a configurable data buffer of 1 024 bytes. Power is drawn from the backplane bus at 5 V DC, drawing up to 190 mA, with a typical power loss of 0.85 W. ## Interface and protocol fit The 20 mA (TTY) interface uses a 9-pin sub D socket and supports cable runs up to 1 000 m passive or 100 m active. Transmission rates are selectable from 2.4 kbit/s up to 19.2 kbit/s, with the printer driver mode capped at 9.6 kbit/s. Supported printers include HP-DeskJet, HP-LaserJet, and IBM-ProPrinter, plus user-defined types — useful for direct serial printing from the PLC without a PC intermediary. ## Environmental and physical specs The module measures 40 mm wide, 125 mm high, and 120 mm deep, fitting a single S7-300 slot width.","metaTitle":"Siemens 6ES7340-1BH02-0AE0 CP 340, 20 mA TTY, EOL","metaDescription":"Siemens SIMATIC S7-300 CP 340 communications processor with isolated 20 mA (TTY) interface. Max. 19.2 kbit/s. 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":{"Max.":"70 °C","Min.":"-40 °C","ASCII":"1 024 byte","Depth":"120 mm","Width":"40 mm","Height":"125 mm","RK 512":"No","24 V DC":"No; Power supply via backplane bus 5V","3964 (R)":"1 024 byte","Connector type":"9-pin sub D socket","Weight, approx.":"300 g","lifecycle_stage":"eol_hot","Power loss, max.":"0.95 W","Power loss, typ.":"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.":"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.":"190 mA","Customer-Specific Drivers Reloadable":"No","Design of electrical connection for supply voltage":"Over backplane bus"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$520.07 – $1,266.00","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/85fb3cdc8063cc64330b5cf7f0c62bc0.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=495&mlfb=6ES7340-1BH02-0AE0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7340-1BH02-0AE0/alternatives.json"},"ai":{"faq":[{"question":"Is 6ES7340-1BH02-0AE0 compatible with S7-300?","answer":"Yes, it is a SIMATIC S7-300 CP 340 communications processor designed to slot directly into an S7-300 rack, drawing power from the backplane bus."},{"question":"Does 6ES7340-1BH02-0AE0 require a separate power supply?","answer":"No. It is powered via the S7-300 backplane bus at 5 V DC, drawing up to 190 mA. No external 24 V DC supply is needed."},{"question":"What is the maximum cable length for the TTY interface?","answer":"The 20 mA (TTY) interface supports cable lengths up to 1 000 m in passive mode and 100 m in active mode."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7340-1BH02-0AE0","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/6ES7340-1BH02-0AE0 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}}