{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RK7243-2AA30-0XB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RK7243-2AA30-0XB0","canonicalUrl":"https://aoctrl.com/siemens/3RK7243-2AA30-0XB0","factsUrl":"https://aoctrl.com/api/mcp/products/3RK7243-2AA30-0XB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens AS-Interface Master, S7-1200 design, IP20, 30 x 75 x 100 mm, 3RK7243-2AA30-0XB0.","salesMarkdown":"## AS-Interface Master for S7-1200 Racks The Siemens 3RK7243-2AA30-0XB0 is an AS-Interface master module in the S7-1200 form factor. Galvanic isolation is rated at 500 V insulation voltage. ## Mounting & Environmental Fit Enclosure is IP20 and sized 30 mm wide × 75 mm deep × 100 mm high — a narrow footprint that leaves room on the DIN rail. ## Protocol Limitations No SNMP, TCP/IP, PROFINET, PROFIBUS, PROFIsafe, or wireless on this module. Data travels over the S7-1200 backplane bus only, with digital I/O accessed via the process image and analog I/O via data record transfer. If your cell requires a fieldbus gateway, you'll need to add a separate communication processor.","metaTitle":"Siemens 3RK7243-2AA30-0XB0 AS-Interface Master, S7-1200","metaDescription":"Siemens 3RK7243-2AA30-0XB0 AS-Interface Master for S7-1200 design. Galvanic isolation, 250 mA bus draw, supports up to 62 slaves. Current production, source via RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Remote I/O & Fieldbus Modules"],"specifications":{"Note":"All product versions","SNMP":"No","Depth":"75mm","Other":"0","Width":"30mm","title":"3RK7243-2AA30-0XB0","EEx ia":"No","EEx ib":"No","Height":"100mm","TCP/IP":"No","description":"SIMATIC S7-1200, CM 1243-2 communication module AS-Interface master according to AS-i specification V3.0","For 31 Slaves":"5ms","For 62 Slaves":"10ms","Module Format":"S7-1200 design","During Storage":"-40 ... +70°C","power loss [W]":"2.9W","as AS-Interface":"1","at 30 V maximum":"100mA","lifecycle_stage":"current","During Transport":"-40 ... +70°C","Fastening Method":"snap-on fastening on 35 mm DIN rail","according to USB":"0","PROFIBUS protocol":"No","Galvanic Isolation":"Yes","PROFIsafe protocol":"No","Product Designation":"AS-Interface Master","according to RS 485":"0","protection class IP":"IP20","PROFINET IO protocol":"No","Web-Based Management":"No","According To Wireless":"0","Diagnostics Via Email":"No","PROFINET CBA protocol":"No","according to PROFINET":"0","Type Of Voltage Supply":"via backplane bus","as status display by LED":"AS-i, PF, CM, CER, DIAG","Type Of Data Transmission":"S7-1200 backplane bus","access to analog I/O data":"via process diagram/peripheral addresses and data record transfer","From Backplane Bus Maximum":"250mA","access to digital I/O data":"via process image/peripheral addresses","Insulation Voltage Rated Value":"500V","number of units per CPU maximum":"3","according to Industrial Ethernet":"0","ASIsafe (Safety at work) protocol":"No","Product Component Optical Interface":"No","number of units per CPU maximum note":"Max. 3 communication modules in total (CM /CP)","Product Feature Redundancy Capability":"No","AS-Interface master profile is supported":"M4 (in acc. with AS-interface specification V 3.0)","If Installed On Horizontal Mounting Rail":"0 ... 55°C","number of inputs for AS-Interface maximum":"496","type of configuration of the AS-Interface":"With STEP 7, command interface","number of outputs for AS-Interface maximum":"496","Suitability For Use Safety-Related Function":"No","product function suitable for AS-i Power24V":"Yes","number of AS-i slaves per AS-Interface maximum":"62","operating condition separate power supply 24 V":"No","standard for wireless communication IEEE 802.11":"No","type of electrical connection of the AS-Interface":"Screw-type connection","relative humidity at 25 °C during operation maximum":"95%","If Installed On Vertical Mounting Rail During Operation":"0 ... 45°C","Installation Altitude At Height Above Sea Level Maximum":"2 000m"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$320.04 – $531.20","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/5c50c4312ec94471cf57eff5721b0803.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=400870&mlfb=3RK7243-2AA30-0XB0"},"ai":{"faq":[{"question":"What does the 'All product versions' note mean for this module?","answer":"The module is designated as an AS-Interface Master and the note indicates it covers all product versions of that function — meaning it works across the standard AS-Interface specification variants."},{"question":"What is the SNMP capability of this module?","answer":"No SNMP support. This module communicates exclusively over the S7-1200 backplane bus and does not provide network management features."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RK7243-2AA30-0XB0","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/3RK7243-2AA30-0XB0 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}}