{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"140CPU67261C","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"140CPU67261C","canonicalUrl":"https://aoctrl.com/schneider/140CPU67261C","factsUrl":"https://aoctrl.com/api/mcp/products/140CPU67261C","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Modicon Quantum 140CPU67261C Unity Hot Standby processor, 266 MHz, 11264 kB internal RAM, single-mode fiber optic link, conformal coated, discontinued.","salesMarkdown":"## Overview The 140CPU67261C is a Schneider Modicon Quantum Unity Hot Standby processor running at 266 MHz, built for redundant control over a single-mode fiber link up to 16 km between primary and secondary PLCs. It carries 11264 kB of internal RAM with 1536 kB reserved for data, supports 500 analog inputs/outputs and 31744 discrete I/O points, and is conformal coated with Humiseal 1A33. For a panel originally specified around the 140CPU67861C, the 140CPU67261C shares the same form factor and backplane interface, but the 140CPU67861C carries 3072 kB of internal RAM versus 11264 kB on this unit, so a memory map review is needed before a direct swap. The 140CPU67261C has 11264 kB internal RAM versus 3072 kB on the 140CPU67861C, and supports application-specific I/O for time stamping, counters, serial links, and high-speed interrupts.","metaTitle":"Schneider 140CPU67261C Modicon Quantum Unity Hot Standby processor, 266 MHz","metaDescription":"Schneider 140CPU67261C Modicon Quantum Unity Hot Standby processor: 266 MHz, 11264 kB RAM, single-mode fiber link, conformal coated, discontinued.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":[],"specifications":{"Checks":"Hot standby Process control","Category":"US1PC2118150","Standards":"HazLoc","Clock frequency":"266 MHz","Number of racks":"2 - local","Number of slots":"10 16 4 2 6","Switch Function":"Key switch memory port on/off","System overhead":"0.2 ms fast task 1 ms master task","lifecycle_stage":"eol_hot","Local signalling":"1 LED (green) for Ethernet activity (COM) 1 LED (red) for Ethernet collision","Range of Product":"Modicon Quantum automation platform","Memory description":"Expandable 8 MB - file storage with PCMCIA card Internal RAM 11264 kB - 1536 kB for data","Analogue I/O number":"500 inputs, 500 outputs - distributed - per network Modbus Plus Unlimited (31 drops of 28 slots max) - ethernet remote I/O 1984 inputs,1984 outputs - remote 0 - local - forbidden in Hot Standby application","Discrete I/O number":"31744 inputs, 31744 outputs - remote 8000 inputs, 8000 outputs - distributed - per network Modbus Plus Unlimited (31 drops of 28 slots max) - ethernet remote I/O 0 - local - forbidden in Hot Standby application","Mode of Transmission":"Single mode","Protective treatment":"Conformal coating Humiseal 1A33","Application structure":"1 periodic fast task - forbidden in Hot Standby application 128 I/O interrupt tasks - forbidden in Hot Standby application 128 interrupt tasks - forbidden in Hot Standby application 32 timer interrupt tasks - forbidden in Hot Standby application 4 auxiliary tasks - forbidden in Hot Standby application 1 cyclic/periodic master task -","Communication Service":"Ethernet router","Electrical connection":"1 female connector SUB-D 9 for connecting to the Modbus Plus network 1 connector RJ45 for connecting Modbus bus 1 connector LC (single mode fiber optic) for interconnecting primary and secondary PLCs up to 16 km","Nbr. of units in pkg.":"1","Bus current requirement":"2760 mA","Application specific I/O":"Accurate time stamping Counter Serial link High-speed interrupt inputs","Product or Component Type":"Unity processor","Integrated connection type":"1 Modbus Plus 1 Modbus 1 USB 1 optic fibre Hot Standby","Number of optional modules":"6 Ethernet, Modbus, Modbus Plus, Profibus DP, Sy/Max)","Number of remote I/O station":"31 - 2 S908 remote I/O 31 - 2 ethernet Quantum remote I/O 31 - 2 ethernet X80 remote I/O","Maximum number of connections":"1 USB 2 AS-Interface - distributed 4 AS-Interface - remote 6 Ethernet TCP/IP - local 6 Modbus Plus - local 6 Profibus DP - local 1 Modbus RS232/485 Modbus/ASCII)","Number of instructions per ms":"10.28 Kinst/ms 100 % Boolean 10.07 Kinst/ms 65 % Boolean and 35 % numerical","Number of distributed I/O station":"63 1 3 Modbus Plus"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$24,148.53","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/77ab478077e85cd60155c47be0035361.pdf","sourceUrl":"https://www.se.com/nz/en/product/140CPU67261C/unity-hot-standby-processor-with-single-mode-ethernet-3072-kb-266-mhz-coated/","alternativesUrl":"https://aoctrl.com/api/mcp/products/140CPU67261C/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/140CPU67261C","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/140CPU67261C 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}}