{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7138-4DF11-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7138-4DF11-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7138-4DF11-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7138-4DF11-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"SIMATIC DP, Electronics module for ET 200S, 1 SI serial interface 1-channel, 15 mm width, RS232/422/485, MODBUS/USS, 24 V DC, 0-60 °C.","salesMarkdown":"The 6ES7138-4DF11-0AB0: It can send and receive up to 32 bytes per message with certain IM151-1 versions (otherwise 8 bytes). Parity is selectable as none, odd, or even, but USI only allows even. There's reverse polarity protection on L+, and isolation between the serial port and the backplane. I've seen folks wonder if the 6ES7138-4DE02-0AB0 (a counter module) is a drop-in — it's not. That part is 30 mm wide, has digital I/O and counter inputs, and does not support serial protocols at all. No wiring swap will make this do the other's job; they're built for completely different tasks. Stick with the right module for the right port. Qualified to order against an RFQ; we can source this for your BOM line. No need to hunt for obsolete substitutes — it's alive and well.","metaTitle":"Siemens 6ES7138-4DF11-0AB0 SIMATIC DP Serial Interface Modul","metaDescription":"SIMATIC DP serial interface module for ET 200S, 15 mm wide, RS232/422/485, MODBUS/USS, 0-60 °C, 115.2 kbit/s max. Currently in active production. Source to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLC Communication Modules"],"specifications":{"USS":"Yes","Max.":"60 °C","Min.":"0 °C","Send":"32 byte; With IM151-1 Standard as of 6ES7151-1AA04-0AB0; with IM151-1 High Feature as of 6ES7151-1BA01-0AB0; otherwise 8 bytes","Depth":"52 mm","Width":"15 mm","Height":"81 mm","Modbus":"Yes","Parity":"none, odd, even (USI even only)","RS 422":"TxD(A), RxD(A), TxD(B), RxD(B), GND","RS 485":"R/T(A), R/T(B), GND","RS 232C":"RS 232C signals: 8 (TxD, RxD, RTS, CTS, DTR, DSR, DCD, PE)","Receive":"32 byte; With IM151-1 Standard as of 6ES7151-1AA04-0AB0; with IM151-1 High Feature as of 6ES7151-1BA01-0AB0; otherwise 8 bytes","Receive RxD":"Yes","Transmit TxD":"Yes","Standard blocks":"11 100 byte; Modbus: S_SEND 2700, S_RCV 2400, S_MODB 6000; USI: S_SEND 2700, S_RCV 2400, S_USST 1900, S_USSR 2600, S_USSI 1500","Weight, approx.":"50 g","lifecycle_stage":"current","Power loss, typ.":"1.2 W","Rated value (DC)":"24 V","Bits per character":"8","Cable length, max.":"1 200 m","Group error SF (red)":"Yes","Number of interfaces":"1","Transmission rate, max.":"115.2 kbit/s; half duplex: 110, 300, 600, 1 200, 2 400, 4 800, 9 600, 19 200, 38 400, 57 600, 76 800, 115 200 bps","Bits per character frame":"10 or 11 (USS only 11 bit)","Number of start/stop bits":"1 or 2 (USS only 1)","Reverse polarity protection":"Yes","from supply voltage L+, max.":"80 mA; Typ. 20 mA","from backplane bus 3.3 V DC, max.":"10 mA","between RS 232 and internal power supply":"Yes","Between RS 422/485 and internal power supply":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$342.90 – $504.00","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e5444c2a6d45e12e1a825e1259ff12c7.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=389340&mlfb=6ES7138-4DF11-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7138-4DF11-0AB0/alternatives.json"},"ai":{"faq":[{"question":"What serial protocols does the module support?","answer":"It supports MODBUS and USS, and can operate as RS232, RS422, or RS485."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7138-4DF11-0AB0","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/6ES7138-4DF11-0AB0 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}}