{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7231-0HF22-0XA0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7231-0HF22-0XA0","canonicalUrl":"https://aoctrl.com/siemens/6ES7231-0HF22-0XA0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7231-0HF22-0XA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens EM 231 analog input module, 4 channels, voltage and current inputs, for S7-200 PLC system.","salesMarkdown":"## Signal types and channel assignment The 6ES7231-0HF22-0XA0 is a 4-channel analog input module for the S7-200 family. Channels 0–5 accept voltage signals (0 to +5 V, 0 to +10 V, -5 V to +5 V, -2.5 V to +2.5 V). Channels 6 and 7 are the only ones that accept current inputs: 0 to 20 mA, and they also handle voltage. This split-channel architecture means you cannot mix current inputs across all four channels — if your loop-powered transmitters are on channels 0–5, you need a different module or external burden resistors. The module does not support thermocouple, RTD (Pt100, Pt1000, Ni100, etc.), or resistance inputs — those require the dedicated EM 231 RTD or thermocouple variants. For a 4–20 mA transmitter on channel 0, this module will not work; the current capability is limited to channels 6 and 7 only. ## Resolution and wiring reach Unipolar signals are converted to a range of 0 to 32,000; bipolar signals span -32,000 to +32,000. That gives roughly 15-bit resolution on the unipolar side and 16-bit including sign on bipolar — adequate for most process signals but not high-accuracy instrumentation. The shielded cable run to the sensor is limited to 100 m maximum, which is typical for this generation of S7-200 analog modules and fine for in-panel or local field wiring. Power dissipation is 2 W typical — negligible for the S7-200 backplane budget, but worth noting if the enclosure is sealed and densely populated. Dimensions are 71.2 mm wide, 80 mm high, 62 mm deep; it mounts directly on the DIN rail alongside the CPU and other expansion modules. No stock-holding claim; this is a per-order procurement path.","metaTitle":"Siemens 6ES7231-0HF22-0XA0 Analog Input Module, 4-Ch","metaDescription":"Siemens 6ES7231-0HF22-0XA0 analog input module for S7-200. 4 channels, voltage and current inputs (channels 6&7). Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog Input Modules"],"specifications":{"Cu 10":"No","Depth":"62 mm","Ni 10":"No","Width":"71.2 mm","Height":"80 mm","Ni 120":"No","Pt 100":"No","Pt 200":"No","Pt 500":"No","Type E":"No","Type J":"No","Type K":"No","Type N":"No","Type R":"No","Type S":"No","Type T":"No","Current":"Yes; for channels 6 and 7 only","Ni 1000":"No","Pt 1000":"No","Voltage":"Yes","Pt 10000":"No","0 to +5 V":"Yes","0 to +10 V":"Yes","0 to 20 mA":"Yes; for channels 6 and 7 only","Resistance":"No","-5 V to +5 V":"Yes","Thermocouple":"No","0 To 150 Ohms":"No","0 To 300 Ohms":"No","0 To 600 Ohms":"No","Shielded, Max.":"100 m; to the sensor","Bipolar Signals":"-32 000 to +32 000","Parameterizable":"No","Weight, approx.":"190 g","lifecycle_stage":"current","-2.5 V to +2.5 V":"Yes","-80 mV to +80 mV":"No","Power loss, typ.":"2 W","Unipolar Signals":"0 to 32 000","Plug-in I/O terminals":"No","Resistance thermometer":"No","Number of analog inputs":"8; Difference","Common mode voltage, max.":"12 V","external fault EXTF (red)":"Yes","Input resistance (0 to 5 V)":"10 MΩ","Input resistance (0 to 10 V)":"10 MΩ","Conversion time (per channel)":"250 µs","Input resistance (0 to 20 mA)":"10 MΩ","Input resistance (-5 V to +5 V)":"10 MΩ","from backplane bus 5 V DC, max.":"20 mA","Potential separation analog inputs":"No","Input resistance (-2.5 V to +2.5 V)":"10 MΩ","from load voltage L+ (without load), max.":"60 mA","Resolution with overrange (bit including sign), max.":"12 bit","Interference voltage suppression for interference frequency f1 in Hz":"40 dB, DC up to 60 V for interference frequency","Permissible Input Current For Current Input (Destruction Limit), Max.":"40 mA","Permissible Input Voltage For Voltage Input (Destruction Limit), Max.":"30 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$326.00","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/76faf822885a44d9b62453dfa1df03a3.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=289125&mlfb=6ES7231-0HF22-0XA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7231-0HF22-0XA0/alternatives.json"},"ai":{"faq":[{"question":"Is the 6ES7231-0HF22-0XA0 compatible with all S7-200 CPUs?","answer":"Yes, it works with the entire S7-200 family including CPU 21x and 22x series. The module connects via the expansion bus ribbon cable and is recognised automatically by the CPU. No special configuration beyond the analog input channel setup in STEP 7 Micro/WIN is needed."},{"question":"Does the 6ES7231-0HF22-0XA0 support 4-20 mA current inputs?","answer":"Only on channels 6 and 7. Channels 0 through 5 are voltage-input only (0 to +5 V, 0 to +10 V, -5 V to +5 V, -2.5 V to +2.5 V). If you need 4-20 mA on all four channels, look at the 6ES7231-4HD32-0XB0 which has current inputs on all channels."},{"question":"Where can I buy the Siemens 6ES7231-0HF22-0XA0?","answer":"Submit a request with your target quantity and delivery window for a current price and lead-time quote. Availability is confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7231-0HF22-0XA0","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/6ES7231-0HF22-0XA0 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}}