{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6AG1138-4DF11-7AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6AG1138-4DF11-7AB0","canonicalUrl":"https://aoctrl.com/siemens/6AG1138-4DF11-7AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6AG1138-4DF11-7AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 6AG1138-4DF11-7AB0 SIPLUS ET 200S EM 1SI serial interface module, 1-channel, 15 mm wide, RS-232/422/485, Modbus/USS, -25 to +70 °C, conformal coated.","salesMarkdown":"## What this module provides The 6AG1138-4DF11-7AB0 is a SIPLUS variant of the ET 200S EM 1SI serial interface module, based on 6ES7138-4DF11-0AB0 with a conformal coating for harsh environments. It adds one serial channel supporting RS-232, RS-422, or RS-485 with selectable protocols: USS for drive communication or Modbus RTU for PLC-to-device links. Baud rates from 110 to 115.2 kbit/s, half duplex. Power draw is typical 20 mA from the 24 V DC supply (max. 80 mA) plus 10 mA from the backplane bus, with a typical power loss of 1.2 W. The conformal coating and resistance to aggressive gases, salt spray, and oil make it suitable for harsh environments. ## Integration notes Physical width is 15 mm, same as standard ET 200S electronic modules. Depth 52 mm, height 81 mm. A single interface port is available, selectable for RS-232 (full 8-signal DTE with TxD, RxD, RTS, CTS, DTR, DSR, DCD, PE), RS-422 (TxD/RxD with GND), or RS-485 (half-duplex R/T with GND).","metaTitle":"Siemens 6AG1138-4DF11-7AB0 SIPLUS Serial Interface Module, -","metaDescription":"SIPLUS ET 200S serial interface module, 1-channel RS-232/422/485 with Modbus/USS, conformal coated, -25 to +70°C, 15 mm wide. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLCs (Programmable Logic Controllers)"],"specifications":{"USS":"Yes","Max.":"70 °C; = Tmax","Min.":"-25 °C; = Tmin","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","title":"6AG1138-4DF11-7AB0","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","description":"SIPLUS ET 200S EM 1SI RS-232/ 422 based on 6ES7138-4DF11-0AB0 with conformal coating, -25…+70 °C, serial interface 1-channel, 15 mm width, RS-232/422, 485 MODBUS/USS","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","Installation altitude above sea level, max.":"5 000 m","Between RS 422/485 and internal power supply":"Yes","Ambient air temperature-barometric pressure-altitude":"Tmin ... Tmax at 1 140 hPa ... 795 hPa (-1 000 m ... +2 000 m) // Tmin ... (Tmax - 10 K) at 795 hPa ... 658 hPa (+2 000 m ... +3 500 m) // Tmin ... (Tmax -20 K) at 658 hPa ... 540 hPa (+3 500 m ... +5 000 m)","Environmental conditions for process, measuring and control systems acc. to ANSI/ISA-71.04":"Yes; Level GX group A/B (excluding trichlorethylene; harmful gas concentrations up to the limits of EN 60721-3-3 class 3C4 permissible); level LC3 (salt spray) and level LB3 (oil)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e51396e92b3a763c69906944371f4bb2.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=194901&mlfb=6AG1138-4DF11-7AB0"},"ai":{"faq":[{"question":"What compliance documentation is available for this module?","answer":"The module carries environmental qualification per ANSI/ISA-71.04 (aggressive gas, salt spray, oil) and IPC-CC-830A conformal coating. Certificates such as CE, UL, and RoHS are standard for the base product line; specific declarations are available upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6AG1138-4DF11-7AB0","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/6AG1138-4DF11-7AB0 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}}