{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"140CPU31110","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"140CPU31110","canonicalUrl":"https://aoctrl.com/schneider/140CPU31110","factsUrl":"https://aoctrl.com/api/mcp/products/140CPU31110","rawCanonicalId":null},"summary":{"shortDescription":"Schneider 140CPU31110 Plc Expansion Modules — now discontinued. Supplied from remaining channel stock; full specifications, lifecycle and same-series options are below.","salesMarkdown":"As the central controller in a Modicon Quantum rack, the 140CPU31110 executes the user program and coordinates local and remote I/O. Its 548 kB of internal RAM sizes the application — enough for medium-scale process and machine logic with data handling and recipe management. The processor supports one cyclic/periodic master task, one periodic fast task, 16 timer interrupt tasks, and 64 I/O interrupt tasks, with execution times of 0.12–0.585 µs for Boolean and word operations. The two Modbus ports handle serial communication with legacy drives, meters, and HMI panels, while the Modbus Plus port provides a high-speed peer-to-peer network for distributed control. A slide switch selects ASCII/RTU protocol on the communication port and memory port write protection. ## Applications Modicon Quantum processors of this class are used in continuous process control, batch processing, and critical infrastructure — water and wastewater treatment, oil and gas pipelines, power generation, and chemical processing — where deterministic execution and redundant I/O architectures are required. Within the Modicon Quantum automation platform, the 140CPU31110 sits as a mid-range Unity processor, specified by system integrators and end users who need on-board Modbus Plus networking and a 548 kB memory footprint.","metaTitle":"Schneider 140CPU31110 Modicon Quantum Unity Processor, 548 kB","metaDescription":"Schneider Modicon Quantum 140CPU31110 Unity processor: 548 kB RAM, 2 Modbus + 1 Modbus Plus, 66 MHz, HazLoc, 2 female SUB-D 9 connectors.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":[],"specifications":{"Checks":"Process control","Category":"US1PC2118150","Standards":"HazLoc","Clock frequency":"66 MHz","Number of racks":"2 - local","Number of slots":"16 4 10 2 6","Switch Function":"Slide switch communication port : ASCII/RTU/Memory Slide switch memory port/off","System overhead":"0.2 ms fast task 1 ms master task","lifecycle_stage":"eol_hot","Local signalling":"1 LED (green) for communications are active on the Modbus Plus port (Modbus Plus) 1 LED (green) for communications are active on the Modbus port (Modbus) 1 LED (green) for CPU has been started and is solving logic (RUN) 1 LED (green) for CPU has passed the power-up diagnostic tests (READY) 1 LED (orange) for write-protected memory (memory port) 1 LED (red) for battery needs replacing or is not present (BAT LOW) 1 LED (red) for communications error on the Modbus Plus port (ERROR A)","Range of Product":"Modicon Quantum automation platform","Memory description":"Internal RAM 548 kB","Analogue I/O number":"Unlimited (27 slots max) - local 500 inputs, 500 outputs - distributed - per network Modbus Plus 1984 inputs,1984 outputs - S908 remote I/O","Discrete I/O number":"Unlimited (27 slots max) - local 31744 inputs, 31744 outputs - remote 8000 inputs, 8000 outputs - distributed - per network Modbus Plus","Application structure":"1 cyclic/periodic master task - 1 periodic fast task - 16 timer interrupt tasks - 64 I/O interrupt tasks - 64 interrupt tasks - No auxiliary task -","Electrical connection":"1 female connector SUB-D 9 for connecting to the Modbus Plus network 2 female connectors SUB-D 9 for connecting to the Modbus bus","Nbr. of units in pkg.":"1","Bus current requirement":"1800 mA","Application specific I/O":"High-speed interrupt inputs Counter Accurate time stamping Serial link","Product or Component Type":"Unity processor","Integrated connection type":"1 Modbus Plus 2 Modbus","Number of optional modules":"2 Ethernet, Modbus, Modbus Plus, Profibus DP, Sy/Max)","Number of remote I/O station":"31 - 2 S908 remote I/O 0 - 0 ethernet remote I/O","Maximum number of connections":"1 USB 2 AS-Interface - distributed 2 Ethernet TCP/IP - local 2 Modbus Plus - local 2 Modbus RS232/485 Modbus/ASCII) 2 Profibus DP - local 4 AS-Interface - remote","Number of instructions per ms":"1.86 Kinst/ms 100 % Boolean 2.49 Kinst/ms 65 % Boolean and 35 % numerical","Execution time per instruction":"0.1...0.27 µs floating points 0.1...0.27 µs on fixed-point arithmetic 0.12...0.585 µs Boolean 0.12...0.585 µs on word","Number of distributed I/O station":"63 1 3 Modbus Plus"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2,704.00 – $5,939.78","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/6891fb44880557061b2006d9bd094eb0.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/140CPU31110/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/140CPU31110","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/schneider/140CPU31110 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:21:01.794Z","lastPublished":"2026-09-02T08:21:01.794Z","indexable":true}}