{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7241-1CH31-0XB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7241-1CH31-0XB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7241-1CH31-0XB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7241-1CH31-0XB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-1200, Communication module CM 1241, RS-422/485, 9-pin Sub-D socket, supports Freeport, USS, ASCII, 24 V DC, 155 g, IP20, spare part.","salesMarkdown":"## RS-422/485 communication for S7-1200 The Siemens 6ES7241-1CH31-0XB0 is a Communication Module CM 1241 for the SIMATIC S7-1200 system, providing a single RS-422/485 interface via a 9-pin Sub-D socket. It is designated as a spare part, meaning it maintains the same form, fit, and function as the original module for replacement in existing installations. The module draws up to 240 mA from the 24 V DC backplane supply (permissible range 20.4 V to 28.8 V) and dissipates 1.2 W typical. It supports Freeport protocol for user-defined serial communication, with USS and ASCII available as library functions. ## Environmental and mounting envelope Rated for horizontal installation from 0 °C to 55 °C and vertical installation from 0 °C to 45 °C, with a permissible temperature change of 3 °C per minute. The module operates at up to 95 % relative humidity (non-condensing) and at atmospheric pressures from 795 hPa to 1080 hPa.","metaTitle":"Siemens 6ES7241-1CH31-0XB0 CM 1241 RS-422/485, spare part","metaDescription":"Siemens SIMATIC S7-1200 CM 1241 RS-422/485 communication module, spare part designation, 24 V DC, supports Freeport, USS, ASCII. Quoted 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","Height":"100 mm","Operation, max.":"1 080 hPa","Operation, min.":"795 hPa","Weight, approx.":"155 g","lifecycle_stage":"current","Power loss, typ.":"1.2 W","Rated value (DC)":"24 V","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.":"240 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","permissible range, lower limit (DC)":"20.4 V","permissible range, upper limit (DC)":"28.8 V","Operation at 25 °C without condensation, max.":"95 %"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$88.90 – $109.00","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=35556&mlfb=6ES7241-1CH31-0XB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7241-1CH31-0XB0/alternatives.json"},"ai":{"faq":[{"question":"Is 6ES7241-1CH31-0XB0 compatible with Siemens S7-1200?","answer":"Yes, the CM 1241 is designed specifically for the SIMATIC S7-1200 system. It snaps onto the DIN rail and connects via the backplane bus, supporting Freeport, USS, and ASCII protocols over its single RS-422/485 interface."},{"question":"Does 6ES7241-1CH31-0XB0 support Freeport protocol?","answer":"Yes, the module supports Freeport protocol for user-defined serial communication, with USS and ASCII also available as library functions."},{"question":"Where can I buy 6ES7241-1CH31-0XB0?","answer":"This spare-part module is sourced to order against your BOM quantity. Availability and pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7241-1CH31-0XB0","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/6ES7241-1CH31-0XB0 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}}