{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7340-1CH02-0AE0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7340-1CH02-0AE0","canonicalUrl":"https://aoctrl.com/siemens/6ES7340-1CH02-0AE0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7340-1CH02-0AE0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-300 CP 340 communications processor, RS 422/485 interface, 19.2 kbit/s max, 40 x 125 x 120 mm.","salesMarkdown":"## What this CP 340 does on the serial line The Siemens 6ES7340-1CH02-0AE0 is a SIMATIC S7-300 CP 340 communications processor with one isolated RS 422/485 interface, designed for point-to-point serial links to printers, barcode scanners, or other serial devices in a control cabinet. It handles ASCII protocol up to 1 024 byte frames and the 3964 (R) protocol at the same buffer depth, with a top transmission rate of 19.2 kbit/s over cable runs up to 1 200 m. ## Sourcing a discontinued S7-300 serial module For BOM lines that still specify the 6ES7340-1CH02-0AE0, availability is through independent distribution and surplus channels. ## Fit and environmental limits The module draws 165 mA max from the 5 V backplane bus, dissipates 0.85 W max, and fits a 40 mm wide slot in the S7-300 rail. Connection is via a 15-pin sub-D socket for the RS 422/485 bus. The interface is isolated, which avoids ground-loop issues when the serial cable runs between cabinets or over long distances.","metaTitle":"Siemens 6ES7340-1CH02-0AE0 CP 340, RS 422/485, EOL","metaDescription":"Siemens 6ES7340-1CH02-0AE0 CP 340 communications processor for S7-300, RS 422/485, 19.2 kbit/s. End-of-life status. 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":"15-pin sub D socket","Weight, approx.":"300 g","lifecycle_stage":"eol_hot","Power loss, max.":"0.85 W","Power loss, typ.":"0.6 W","Cable length, max.":"1 200 m","Supported Printers":"HP-Deskjet, HP-Laserjet, IBM-Proprinter, user-defined","Interfaces/bus type":"RS 422 / 485 (X.27)","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","Customer-Specific Drivers Reloadable":"No","Design of electrical connection for supply voltage":"Over backplane bus"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$322.22","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/169795254240129752abbb1e0c165c56.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=266245&mlfb=6ES7340-1CH02-0AE0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7340-1CH02-0AE0/alternatives.json"},"ai":{"faq":[{"question":"Does 6ES7340-1CH02-0AE0 support RS 422 and RS 485?","answer":"Yes, the interface supports both RS 422 and RS 485 (X.27) on the same isolated 15-pin sub-D port, selectable via the configuration software."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7340-1CH02-0AE0","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/6ES7340-1CH02-0AE0 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}}