{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7231-5QD50-0XB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7231-5QD50-0XB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7231-5QD50-0XB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7231-5QD50-0XB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 6ES7231-5QD50-0XB0, SIMATIC S7-1200 G2 SB 1231 TC signal board, 4 thermocouple inputs type J or K, active current production.","salesMarkdown":"The Siemens 6ES7231-5QD50-0XB0 is a signal board for the S7-1200 G2 CPU family, adding 4 thermocouple inputs directly on the CPU's front slot. It accepts type J or K thermocouples and includes onboard cold-junction compensation, so no external reference junction or isothermal block is needed. Thermocouple signal levels are in the millivolt range – keep TC wire routed away from VFD and high-current power wiring. The board's cold-junction compensation is reliable with a clean signal path; noise on the TC pair will show up as temperature drift that looks like a field issue. Occupies one signal board slot on the S7-1200 G2 CPU, directly plugging into the front connector. No additional DIN-rail space required – the board mounts flush with the CPU face. Packaged singly (82 x 34 x 79 mm). Panel builders: account for the board's terminal height when closing the cabinet door – typical SB clearance matches the CPU's own depth, but verify against field wiring duct placement.","metaTitle":"Siemens 6ES7231-5QD50-0XB0 SB 1231 TC, 4x TC inputs","metaDescription":"Active-production signal board for S7-1200 G2 CPUs. Adds 4 thermocouple inputs (type J/K) with onboard cold-junction compensation. RoHS compliant since 01-05-25. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["PLC I/O & Expansion Modules"],"specifications":{"title":"6ES7231-5QD50-0XB0","Group Code":"R132","description":"SIMATIC S7-1200 G2, SB 1231 TC, AI 4x TC type J or K","Product Group":"4508","Product class":"A: Standard product which is a stock item could be returned within the returns guidelines/period.","Quantity Unit":"1 Piece","Product Family":"SB 1231 AI 4xTC thermocouple signal board","lifecycle_stage":"current","Packaging Quantity":"1","Export Control Regulations":"AL : N / ECCN : EAR99H","Packaging dimensions (L x W x H)":"82.00 x 34.00 x 79.00 mm","Compliance with the substance restrictions according to RoHS directive":"Since: 01-05-25","REACH Art. 33 Duty to inform according to the current list of candidates":"Reach Information"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/fb10a4ca207946990ead560d848b2dc2.pdf","sourceUrl":"https://sieportal.siemens.com/en-ae/products-services/detail/6ES7231-5QD50-0XB0?tree=CatalogTree"},"ai":{"faq":[{"question":"What are the internal classification codes?","answer":"Group Code R132, Product Group 4508, Product Class A (standard stock item, returnable)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7231-5QD50-0XB0","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/6ES7231-5QD50-0XB0 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}}