{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7241-1CH30-0XB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7241-1CH30-0XB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7241-1CH30-0XB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7241-1CH30-0XB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-1200 CM 1241 RS485 communication module, order code 6ES7241-1CH30-0XB0, RS422/485 interface, 9-pin D-sub, supports USS and ASCII protocols via library function, IP20, 30 x 100 x 75 mm.","salesMarkdown":"## What the CM 1241 RS485 does The Siemens 6ES7241-1CH30-0XB0 is a Communication Module CM 1241 for the SIMATIC S7-1200 controller family. It provides a single RS422/485 interface on a 9-pin D-sub socket, supporting Freeport protocol in addition to USS and ASCII available as library functions. That means protocol handling is done in the CPU software using library blocks, not in the module hardware — factor the programming effort into your spares or line-based planning. The module draws 220 mA from the L5+ backplane logic supply and dissipates 1.1 W typ. At 30 mm wide, it fits tightly in the rack with room alongside CPU and other modules. IP20 rated, clean environment only. ## Sourcing and compatibility note This module snaps into any S7-1200 CPU rack and communicates over the backplane bus, supporting USS and ASCII via library functions. The RS485 interface uses a 9-pin D-sub socket and supports cable lengths up to 1 000 m.","metaTitle":"Siemens 6ES7241-1CH30-0XB0 CM 1241 RS485 Module, RS422/485,","metaDescription":"Siemens 6ES7241-1CH30-0XB0 SIMATIC S7-1200 CM 1241 RS485 communication module. RS422/485, 9-pin D-sub, USS/ASCII via library. IP20, 30mm wide, 1.1W. Active, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLC Communication Modules"],"specifications":{"USS":"Yes; Available as library function","Max.":"70 °C","Min.":"-40 °C","ASCII":"Yes; Available as library function","Depth":"75 mm","Width":"30 mm","title":"6ES7241-1CH30-0XB0","Height":"100 mm","description":"***Spare part*** SIMATIC S7-1200, Communication module CM 1241, RS485, 9-pole D-sub (socket), supports Freeport","Operation, max.":"1 080 hPa","Operation, min.":"795 hPa","Weight, approx.":"150 g","lifecycle_stage":"current","Power loss, typ.":"1.1 W","Fall height, max.":"0.3 m; five times, in product package","Cable length, max.":"1 000 m","Interfaces/bus type":"RS 422 / 485 (X.27)","Number of interfaces":"1","IP degree of protection":"IP20","Storage/transport, max.":"1 080 hPa","Storage/transport, min.":"660 hPa","Current consumption, max.":"220 mA; From L5+; logic","Vertical Installation, Max.":"45 °C","Vertical Installation, Min.":"0 °C","Horizontal Installation, Max.":"55 °C","Horizontal Installation, Min.":"0 °C","Permissible Temperature Change":"5°C to 55°C, 3°C / minute","Operation at 25 °C without condensation, max.":"95 %"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$180.02","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/0990ab5020283de8561217cbf1baf9a2.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=497574&mlfb=6ES7241-1CH30-0XB0"},"ai":{"faq":[{"question":"Does 6ES7241-1CH30-0XB0 support USS protocol?","answer":"Yes, USS is available as a library function for the CPU. It is not hardware-implemented on the module itself."},{"question":"What is the maximum operating temperature for the CM 1241 RS485?","answer":"The module is rated for -40 to 70 °C ambient, covering both cold unheated cabinets and warm enclosures."},{"question":"Will 6ES7241-1CH30-0XB0 drop into a panel originally specified with 6AG1278-4BD32-4XB0?","answer":"No, due to the width difference: 30 mm vs 45 mm. The SIPLUS variant is wider and may not fit the same rail or leave room for adjacent modules. Rewiring or panel modification is required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7241-1CH30-0XB0","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/6ES7241-1CH30-0XB0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}