{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7288-1ST20-0AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7288-1ST20-0AA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7288-1ST20-0AA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7288-1ST20-0AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens S7-1200 CPU, 6ES7288-1ST20-0AA0, FBD/LAD/STL programming, 12 kB program memory, -40 to 70 °C, DIN rail, PROFINET, RS485, PID control, high-speed counters.","salesMarkdown":"## CPU core and programming The Siemens 6ES7288-1ST20-0AA0 is an S7-1200 CPU supporting FBD, LAD, and STL programming languages, with 12 kB program memory and DDR RAM. It handles 144 bytes each of digital and analog I/O, mapped as 256 bits of digital inputs/outputs and 56 words of analog inputs/outputs. The CPU includes a maintenance-free real-time clock with 7-day backup, no battery required. ## Communications and integration Built-in PROFINET interface with TCP/IP support and autonegotiation; update time as low as 4 ms. RS485 port runs at up to 187.5 kbps. PROFIBUS connectivity is available via a CM DP module. The CPU can act as both PROFINET client and server. Mounts on standard DIN rail — snap-on to a 35 mm rail, 90 mm wide by 100 mm tall by 81 mm deep. ## Control and I/O features Built-in PID closed-loop control supports up to 8 loops with continuous or binary outputs, automatic/manual mode. Six high-speed counters are parameterizable: four single-phase HSCs at 200 kHz, two at 30 kHz; four A/B-phase HSCs at 100 kHz, two at 20 kHz. Input thresholds are configurable: signals below 1 V DC (I0.0–I0.3) or 5 V DC (I0.4–I2.7) read as logic 0; above 4 V or 15 V respectively read as logic 1. Forcing and autocrossing are supported.","metaTitle":"Siemens 6ES7288-1ST20-0AA0 S7-1200 CPU, -40 to 70°C, FBD/LAD","metaDescription":"Siemens 6ES7288-1ST20-0AA0 S7-1200 CPU with FBD/LAD/STL programming, 12 kB program memory, PID control, high-speed counters, PROFINET, RS485, -40 to 70°C. Active production, source","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["DIN Rail Power Supplies"],"specifications":{"FBD":"Yes","LAD":"Yes","RAM":"Yes","STL":"Yes","Max.":"70 °C","Min.":"-40 °C","Type":"Hardware clock, no battery backup","Depth":"81 mm","Flash":"Yes","Width":"90 mm","Height":"100 mm","Inputs":"144 byte; 256 bit of digital inputs & 56 words of analog inputs","RS 485":"Yes","TCP/IP":"Yes","CE mark":"Yes","Forcing":"Yes","Outputs":"144 byte; 256 bit of digital outputs & 56 words of analog outputs","Present":"Yes; Maintenance free, RTC requires 7 days.","Isolated":"Yes; Transformer isolated, 1,500V AC","PROFIBUS":"Yes; Via CM DP module","As Client":"Yes","As Server":"Yes","Supported":"Yes","Backup time":"7 d","Memory size":"12 kbyte; Program memory","Autocrossing":"Yes","Inputs, max.":"128 byte; Per device","Outputs, max.":"128 byte; Per device","Rail mounting":"Yes; Standard - DIN rail","Updating time":"4 ms; The minimum value of the update time also depends on the communication component set for PROFINET IO, on the number of IO devices and the quantity of configured user data.","For Signal \"0\"":"I0.0 to I0.3 < 1 V DC; I0.4 to I2.7 < 5 V DC","For Signal \"1\"":"I0.0 to I0.3 > 4V; I0.4 to I2.7 > 15V","Interface type":"RS 485 (max. 187.5 kbps)","PID controller":"Yes; PID closed-loop control function: Continuous controller outputs, binary controller outputs, automatic/manual mode, max. 8 loops","Shielded, Max.":"500 m","Type of memory":"DDR","Autonegotiation":"Yes","Parameterizable":"Yes; 6 Single phase: 4 HSCs at 200 kHz; 2 HSCs at 30 kHz 4 A/B phase: 2 HSCs at 100 kHz; 2 HSCs at 20 kHz","Weight, approx.":"320 g","lifecycle_stage":"current","\"0\" To \"1\", Max.":"3 µs; of the standard outputs, max. 3 µs; of the pulse outputs, max. (Q a.0 to Q a.3) 1 µs","\"1\" To \"0\", Max.":"200 µs; of the standard outputs, max. 200 µs; of the pulse outputs, max. (Q a.0 to Q a.3) 50 µs","Power loss, max.":"20 W","RJ 45 (Ethernet)":"Yes","Rated value (DC)":"24 V","S7 communication":"Yes","Unshielded, Max.":"150 m","Fall height, max.":"0.3 m; five times, in product package","Micro Memory Card":"Yes; microSDHC Card (optional)","Number of counters":"6","On Lamp Load, Max.":"5 W","PROFINET IO Device":"Yes; I-Device since V2.5","At \"0\" To \"1\", Max.":"12.8 ms","At \"0\" To \"1\", Min.":"0.2 ms","Programming package":"STEP 7 Micro/WIN SMART","Current output, max.":"300 mA; 24 V DC Sensor Power","For Signal \"1\", Min.":"20 V DC","For Signal \"1\", Typ.":"4 mA","Inrush current, max.":"11.7 A; at 28.8 V","Type of input voltage":"DC","PROFINET IO Controller":"Yes; Since V2.4","Deviation per day, max.":"120 s; within 120s/month at 25 °C","IP degree of protection":"IP20","Number of pulse outputs":"3","Number of relay outputs":"0","Storage/transport, max.":"1 080 hPa","Storage/transport, min.":"660 hPa","Transmission rate, max.":"100 Mbit/s","For Bit Operations, Typ.":"150 ns; / instruction","Number of digital inputs":"12","Short-circuit protection":"No","Current consumption, max.":"720 mA; 24 V DC","For Word Operations, Typ.":"1.2 µs; / instruction","Number of digital outputs":"8; Transistor","With Resistive Load, Max.":"0.5 A","For Signal \"1\" Rated Value":"0.5 A","Hardware clock (real-time)":"Yes","Installation altitude, max.":"2 000 m","Installation altitude, min.":"-1 000 m","Number of RS 485 interfaces":"1","Of Which High-Speed Outputs":"3; 100 kHz Pulse Train Output","Vertical Installation, Max.":"45 °C","Vertical Installation, Min.":"0 °C","Horizontal Installation, Max.":"55 °C","Horizontal Installation, Min.":"0 °C","Test voltage at air discharge":"8 kV","Memory available for user data":"8 kbyte","for backplane bus (5 V DC), max.":"1.4 A; max. 5 V DC for EM bus","Supports protocol for PROFINET IO":"Yes; RT Controller (since FW V2.4) & I-Device (since FW V2.5)","Test voltage at contact discharge":"4 kV","For Floating Point Arithmetic, Typ.":"3.6 µs; / instruction","permissible range, lower limit (DC)":"20.4 V","permissible range, upper limit (DC)":"28.8 V","For Signal \"0\" Residual Current, Max.":"10 µA","Number of connectable IO Devices, max.":"8","Automatic Detection Of Transmission Rate":"Yes; 10/100 Mbit/s","Number of industrial Ethernet interfaces":"1","Limit class A, for use in industrial areas":"Yes; EN 61000-6-4, interference emission: Intended for use in industrial areas.","Operation at 25 °C without condensation, max.":"95 %","Of The Pulse Outputs, With Resistive Load, Max.":"100 kHz","Interference emission via line/AC current cables":"EN 61000-6-4, interference emission: Intended for use in industrial areas.","For Signal \"0\", Max. (Permissible Quiescent Current)":"1 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$136.00 – $171.45","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=400546&mlfb=6ES7288-1ST20-0AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7288-1ST20-0AA0/alternatives.json"},"ai":{"faq":[{"question":"Does this CPU support FBD and LAD programming?","answer":"Yes, FBD and LAD are both listed as supported languages, along with STL."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7288-1ST20-0AA0","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/6ES7288-1ST20-0AA0 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}}