{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7127-1BE00-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7127-1BE00-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7127-1BE00-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7127-1BE00-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIMATIC SC electronic submodule, 1-count 40 kHz counter module, 24V DC counting input, 24V DC directional input, 51 mm depth, 10 mm width, 64 mm height.","salesMarkdown":"## 40 kHz counting input for incremental encoder or 2-wire sensor The 6ES7127-1BE00-0AB0 is a SIMATIC SC electronic submodule that provides one 40 kHz counting channel with a 24V DC counting input and a separate 24V DC directional input. Signal '1' is detected from +11 to +30V DC, drawing 6 mA typical at high level; signal '0' spans -3 to +5V DC, so the input thresholds are compatible with standard 24V PLC outputs and 2-wire proximity sensors. The module accepts a minimum pulse width of 12.5 µs, which together with the 40 kHz maximum counting frequency defines the edge resolution for high-speed incremental encoders or flow-meter pulse trains. ## DIN-rail footprint and supply integration At 10 mm wide and 51 mm deep, this submodule fits a single-width SIMATIC SC slot without stealing adjacent positions — critical when the backplane is dense with I/O and the cabinet depth is tight. Maximum cable length to the sensor is 100 m, which covers most machine-mount-to-panel runs; the 0.5 W power loss keeps the thermal load on the backplane negligible. Reverse polarity protection on the 24V DC supply is built in, so a swapped wire during commissioning won't damage the module. ## 2-wire sensor compatibility and quiescent current limit The module explicitly supports 2-wire sensors, with a permissible quiescent current (off-state leakage) up to 1.5 mA — this means standard inductive proximity sensors with leakage below that threshold will not falsely trigger the counting input. No channel-to-channel isolation or diagnostics function is provided; the module is intended for simple single-channel counting where the backplane bus handles the data transfer.","metaTitle":"Siemens 6ES7127-1BE00-0AB0 SIMATIC SC Counter Module, 40 kHz","metaDescription":"Siemens 6ES7127-1BE00-0AB0 SIMATIC SC electronic submodule, 1-count 40 kHz counter, 24V DC. Active production. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLC I/O & Expansion Modules"],"specifications":{"Depth":"51 mm","Width":"10 mm","Alarms":"No","Height":"64 mm","Number":"1","2-Wire Sensor":"Yes","Weight, approx.":"15 g","lifecycle_stage":"current","Power loss, max.":"0.5 W","Rated value (DC)":"24 V","Cable length, max.":"100 m","Minimum pulse width":"12.5 µs","Between The Channels":"No","Diagnostics function":"No","Counting frequency, max.":"40 kHz","Between Different Circuits":"75 V DC/60 V AC","Reverse polarity protection":"Yes","Input voltage for signal \"0\"":"-3 to +5V","Input voltage for signal \"1\"":"+11 to +30V","Input current for signal \"1\", typ.":"6 mA; High-level","Between The Channels And Backplane Bus":"No","Status indicator forward counting (green)":"Yes","from load voltage L+ (without load), max.":"20 mA; approx.","Status indicator backward counting (green)":"Yes","Permissible Quiescent Current (2-Wire Sensor), Max.":"1.5 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=389448&mlfb=6ES7127-1BE00-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7127-1BE00-0AB0/alternatives.json"},"ai":{"faq":[{"question":"What is the maximum counting frequency and minimum pulse width?","answer":"The maximum counting frequency is 40 kHz, and the minimum pulse width is 12.5 µs — this sets the edge resolution for high-speed encoder or pulse inputs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7127-1BE00-0AB0","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/6ES7127-1BE00-0AB0 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}}