{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7540-1AD01-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7540-1AD01-0AA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7540-1AD01-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7540-1AD01-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC S7-1500, CM PtP RS232 BA communications module for serial connection RS-232, freeport/3964(R)/USS, 19200 bit/s, 9-pin D-sub plug, RoHS compliant.","salesMarkdown":"The Siemens 6ES7540-1AD01-0AA0 is an active-production CM PtP RS232 BA module for the S7-1500 platform. It provides one RS-232 serial port on a 9-pin D-sub, supporting freeport, 3964(R), and USS protocols at a maximum of 19200 bit/s. That baud rate is fixed for the protocol modes – match it to your downstream device before specifying the BOM line. The module plugs directly into the S7-1500 backplane and is powered from the backplane bus. The 9-pin D-sub is pinned per standard RS-232; standard straight-through cables work. ## Integration notes Spring-cage terminals are not used – the RS-232 port is a fixed 9-pin D-sub. Strip length and termination are per standard RS-232 practice: shield grounded at the panel end only. The module is hot-swappable in S7-1500 racks; no power down is needed for replacement. Protocol selection (freeport, 3964(R), USS) and baud rate (19200 bit/s) are configured in TIA Portal. This module uses RS-232 on a 9-pin D-sub.","metaTitle":"Siemens 6ES7540-1AD01-0AA0 CM PtP RS232 BA, Active","metaDescription":"Active SIMATIC S7-1500 CM PtP RS232 BA communications module for serial connection RS-232, freeport/3964(R)/USS, 19200 bit/s. RoHS compliant. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["PLC Communication Modules"],"specifications":{"title":"6ES7540-1AD01-0AA0","Group Code":"R135","description":"SIMATIC S7-1500, CM PTP RS232 BA communications module for serial connection RS-232, freeport, 3964(R), USS, 19200 bit/s, 9-pin D-sub plug","Product Group":"4502","Product class":"A: Standard product which is a stock item could be returned within the returns guidelines/period.","Quantity Unit":"1 Piece","Product Family":"CM PtP","lifecycle_stage":"current","Packaging Quantity":"1","Export Control Regulations":"AL : N / ECCN : 9N9999","Packaging dimensions (L x W x H)":"15.2 x 14.9 x 4.7 cm","Compliance with the substance restrictions according to RoHS directive":"Since: 13-09-24","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":null,"sourceUrl":"https://sieportal.siemens.com/en-ae/products-services/detail/6ES7540-1AD01-0AA0?tree=CatalogTree"},"ai":{"faq":[{"question":"What protocols and baud rate does this module support?","answer":"It supports freeport, 3964(R), and USS protocols, all at 19200 bit/s via RS-232 on a 9-pin D-sub connector."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7540-1AD01-0AA0","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/6ES7540-1AD01-0AA0 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}}