Schneider Electric Modicon Quantum 140NOE77101 TCP/IP Ethernet Communication Module

Technical Dossier

Product Details And Specifications

Schneider Electric Modicon Quantum Series: Comprehensive Module Range and Technical Overview

The Modicon Quantum platform is Schneider Electric's flagship large-scale PLC/DCS architecture, deployed across critical infrastructure worldwide including petrochemical refineries, nuclear power generation facilities, offshore oil & gas platforms, and continuous-process chemical plants. The Quantum backplane supports hot-standby redundancy, distributed I/O via Modbus Plus and Ethernet, and deterministic scan cycles that meet IEC 61511 SIL 2/3 functional safety requirements. Installed base density in heavy industry makes this series one of the most actively maintained legacy platforms globally, with documented deployments exceeding 20 years of continuous operation.

The Evolution of Modicon Quantum Architecture

The Quantum platform was introduced in the early 1990s as the successor to the Modicon 984 series, inheriting the Modbus RTU communication protocol while adding a high-speed proprietary backplane bus rated at 32 MB/s. The original CPU lineup (140CPU11302, 140CPU43412A) used Modbus Plus as the primary peer-to-peer network. The second architectural generation introduced Ethernet TCP/IP modules (140NOE77100, 140NOE77101) enabling integration with SCADA systems over standard 10/100 Mbps LAN infrastructure. The third phase added Unity Pro programming environment compatibility, replacing Concept and ProWORX software. As of 2020, Schneider Electric has formally classified the Quantum hardware as End-of-Life (EOL), with commercial availability of new units discontinued. Replacement migration paths include the Modicon M580 ePAC platform, which offers backward-compatible I/O addressing and Unity Pro project conversion tools. However, the installed base volume and migration cost in brownfield facilities means Quantum hardware will remain in active service through the 2030s, sustaining strong demand for certified spare and refurbished modules.

Modicon Quantum Full Catalog & Functionalities (SKU List)

CPU / Controller Modules

• 140CPU11302: Quantum CPU, 512KB user memory, Modbus Plus port, Unity Pro compatible
• 140CPU43412A: Quantum CPU, 1MB memory, dual Modbus Plus, enhanced instruction set
• 140CPU65150: Quantum CPU, 3.5MB memory, Ethernet port, hot-standby capable
• 140CPU65160: Quantum CPU, 7MB memory, dual Ethernet, SIL 2 process safety
• 140CPU67160: Quantum CPU, 7MB memory, Ethernet + Modbus Plus, redundancy-ready

Ethernet / Communication Modules

• 140NOE77100: Ethernet TCP/IP 10 Mbps network option module, Modbus/TCP server
• 140NOE77101: Ethernet TCP/IP 10/100 Mbps auto-sensing NOM, Modbus/TCP, FTP, SNMP
• 140NOE77111: Ethernet TCP/IP NOM with enhanced web server and I/O scanning
• 140NOM21100: Modbus Plus network option module, peer-to-peer communications
• 140CRP93200: RIO head-end module for Quantum remote I/O drops via coax

Digital Input Modules

• 140DAI54000: 32-channel 24 VDC discrete input module, sink/source compatible
• 140DAI74000: 16-channel 115 VAC discrete input module, isolated
• 140DDI35300: 32-channel 24 VDC discrete input, high-density, IEC Type 1

Digital Output Modules

• 140DAO84000: 16-channel 115/230 VAC discrete output, relay isolated
• 140DDO35300: 32-channel 24 VDC discrete output, transistor sourcing, 0.5A/ch

Analog I/O Modules

• 140ACI04000: 8-channel analog current input, 4–20 mA, 12-bit resolution
• 140AVO02000: 4-channel analog voltage output, ±10 VDC, 12-bit
• 140ARI03010: 8-channel RTD/resistance input, Pt100/Pt1000, 16-bit

Power Supply Modules

• 140CPS11420: 115/230 VAC input power supply, 20A @ 3.3V backplane bus
• 140CPS21400: 24 VDC input power supply, 20A backplane, redundancy-capable
• 140CPS41400: 48 VDC input power supply, 20A, for telecom/utility environments

Sourcing Hard-to-Find & Obsolete Modicon Quantum Parts

DriveKNMS maintains a dedicated inventory program for Modicon Quantum EOL components. Since Schneider Electric ceased new production of the Quantum hardware line, procurement of modules such as the 140NOE77101, 140CPU65150, and 140CPS11420 through standard distribution channels is no longer reliable. DriveKNMS sources units through certified secondary market channels, factory-surplus liquidations, and decommissioned plant buybacks. All units are de-labeled, inspected, and re-certified before dispatch. For facilities operating under long-term maintenance contracts (LTMA) or asset integrity programs, DriveKNMS offers consignment stock agreements to guarantee module availability against unplanned downtime events. Lead times for common Quantum SKUs are typically 3–10 business days ex-stock; rare variants are quoted within 24 hours of inquiry.

Quality Control for the Modicon Quantum Range

Quantum modules present specific test challenges due to their proprietary backplane bus protocol and multi-layer PCB construction. DriveKNMS applies the following verification procedures to all Quantum inventory: (1) Visual inspection under 10× magnification for capacitor ESR degradation, relay contact wear, and conformal coating integrity. (2) Backplane bus continuity test using a Quantum rack simulator to verify all 96-pin DIN connector signals. (3) For communication modules including the 140NOE77101: full Modbus/TCP transaction test, FTP server response verification, and SNMP MIB walk against a reference Unity Pro project. (4) For CPU modules: cold-start boot sequence validation, memory map integrity check, and Modbus Plus token-passing verification. (5) Burn-in cycle: 48-hour powered operation at 45°C ambient prior to final packaging. Each unit ships with a test report and 12-month warranty against functional failure.