{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7138-4DF10-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7138-4DF10-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7138-4DF10-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7138-4DF10-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC DP, ET 200S, 1 SI Serial Interface, 15mm wide, RS232/422/485, Modbus/USS.","salesMarkdown":"The 6ES7138-4DF10-0AB0: This is a SIMATIC DP electronic module for ET 200S — one serial interface channel in a 15mm-wide slice that handles both USS and Modbus protocols. The interface is fully configurable for RS232, RS422, or RS485, so you can talk to drives on USS or legacy Modbus slaves without needing a separate gateway module. Rated for 24 VDC from the backplane, typical power loss is 1.2 W. Transmission rates from 110 bps up to 38.4 kbps, half-duplex. The module supports 7-byte send and receive blocks, with parity options (none, odd, even) and configurable character frames of 10 or 11 bits — USS demands 11-bit framing with 1 start/stop, and that's handled here. ## Integration Mounts directly on an ET 200S terminal module. The 15mm width is one of the slimmest slices in the range — critical when you're packing eight or more serial ports into a single head station. Depth is 52 mm, height 81 mm, so it clears most DIN-rail enclosures. RS232 cabling is good to 15 m shielded; RS422/485 runs out to 1 200 m shielded. The interface exposes all standard signals: TxD, RxD, RTS, CTS, DTR, DSR, DCD for RS232, and a differential pair for RS422/485. A galvanic isolation barrier exists between the serial port and the backplane supply.","metaTitle":"Siemens 6ES7138-4DF10-0AB0 Serial Interface, Modbus/USS","metaDescription":"SIMATIC DP ET200S serial interface module. Supports USS and Modbus protocols on RS232/422/485. 15mm wide, 0-60°C. Active production, available 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":"7 byte","Depth":"52 mm","Width":"15 mm","title":"6ES7138-4DF10-0AB0","Height":"81 mm","Modbus":"Yes","Parity":"none, odd, even (USI even only)","Receive":"7 byte","Receive RxD":"Yes","description":"SIMATIC DP, ELECTRONIC MODULE FOR ET 200S, 1 SI SERIAL INTERFACE ONE CHANNEL, 15MM WIDE RS232/422, 485 MODBUS/USS","Transmit TxD":"Yes","Standard blocks":"11 900 byte; Modbus: P_SEND, S_RCV, S_MODB; USS: S_SEND, S_RCV, S_USST, S_USSR, S_USSI","Weight, approx.":"50 g","lifecycle_stage":"current","Power loss, typ.":"1.2 W","Rated value (DC)":"24 V","Bits per character":"8","Group error SF (red)":"Yes","Number of interfaces":"1","Transmission rate, max.":"38.4 kbit/s; half duplex: 110, 300, 600, 1 200, 2 400, 4 800, 9 600, 19 200, 38 400 bps","Bits per character frame":"10 or 11 (USS only 11 bit)","Number of start/stop bits":"1 or 2 (USS only 1)","Interface physics, RS 232C (V.24)":"Yes; RS 232C signals: 8 (TxD, RxD, RTS, CTS, DTR, DSR, DCD, PE)","from backplane bus 3.3 V DC, max.":"10 mA","RS 232, cable length shielded, max.":"15 m","Interface (physical) RS 422/485 (X.27)":"Yes; RS-422 signals: 5 (TxD(A), RxD(A), TxD(B), RxD(B), PE); RS-485 signals: 3 (R/T(A), R/T(B), PE)","between RS 232 and internal power supply":"Yes","RS 422/RS 485, cable length shielded, max.":"1 200 m","Between RS 422/485 and internal power supply":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$247.65","stockQuantity":0,"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=53298&mlfb=6ES7138-4DF10-0AB0"},"ai":{"faq":[{"question":"What is the USS support on this module?","answer":"USS protocol is supported directly. The module handles USS framing (11-bit, 1 start/stop) and provides standard blocks: S_SEND, S_RCV, S_USST, S_USSR, S_USSI."},{"question":"What is the maximum operating temperature?","answer":"The module is rated for 0 °C to 60 °C ambient."},{"question":"Will this module drop into a panel originally built with 6ES7193-4CC30-0AA0?","answer":"No. The 6ES7193-4CC30-0AA0 is a terminal module with different dimensions (132 mm × 43 mm × 15 mm vs 81 mm × 52 mm × 15 mm) and a different functional role — it's not a serial interface."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7138-4DF10-0AB0","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/6ES7138-4DF10-0AB0 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}}