Schneider Electric Modicon M340 BMX Modules

Technical Dossier

Product Details And Specifications

Schneider Electric Modicon M340 BMX Series: Comprehensive Module Range and Technical Overview

The Schneider Electric Modicon M340 platform — identified by the BMX prefix — is a mid-range programmable automation controller (PAC) deployed across global heavy industry sectors including petrochemical refining, nuclear auxiliary systems, water treatment infrastructure, and continuous process manufacturing. Its rack-based, backplane-bus architecture supports deterministic scan cycles and IEC 61131-3 programming, making it a standard reference platform in facilities governed by IEC 61511 (functional safety) and ISA-99 (industrial cybersecurity) frameworks. Installed base estimates place the M340 among the top three mid-range PAC platforms in EMEA and Asia-Pacific process industries, with active deployments documented through 2030+ maintenance windows.

The Evolution of BMX Architecture

The Modicon M340 platform was introduced in 2006 as the successor to the Modicon TSX Quantum (140-prefix) and TSX Premium (TSX-prefix) families, consolidating their I/O philosophies into a unified Ethernet-native backplane. The BMX architecture introduced the X Bus (local rack extension) and Ethernet I/O Bus (distributed I/O via BMXNOE/BMXNOC adapters), replacing the earlier Modbus Plus topology used in Quantum systems.

Key architectural milestones: the BMXP341000 (original Unity Pro v2.x CPU) established the base instruction set; the BMXP342020 introduced dual Ethernet ports and web server diagnostics; the BMXP3420302 added Ethernet redundancy (Hot Standby) capability. Firmware compatibility between CPU generations is version-gated — Unity Pro XL v13+ is required for BMXP342020H Hot Standby configurations. Modules from the original 2006 release remain electrically compatible with current racks but require firmware alignment for diagnostic transparency.

As of 2024, Schneider Electric has designated the M340 platform as Active — Mature, with the Modicon M580 (BMENOC/BMEP-prefix) positioned as the strategic successor. Long-term spare parts availability for BMX modules is confirmed through Schneider's Green Premium program to 2030, with third-party MRO suppliers extending effective availability beyond that horizon.

Modicon M340 BMX Full Catalog & Functionalities (SKU List)

CPU / Controller Modules

• BMXP341000: M340 CPU, 256KB application memory, single Ethernet port, Unity Pro v2+
• BMXP342000: M340 CPU, 512KB application memory, dual Ethernet, Modbus TCP/IP master
• BMXP342010: M340 CPU, 1MB application, CANopen master port, dual Ethernet
• BMXP342020: M340 CPU, 4MB application, dual Ethernet, web server, data logging
• BMXP3420302: M340 Hot Standby CPU, 4MB, dual Ethernet, redundancy management

Discrete Input (DI) Modules

• BMXDDI1602: 16-channel 24VDC discrete input, sink/source, standard density
• BMXDDI3202K: 32-channel 24VDC discrete input, connector block terminal, high density
• BMXDDI6402K: 64-channel 24VDC discrete input, high-density, HE10 connector

Discrete Output (DO) Modules

• BMXDDO1602: 16-channel 24VDC discrete output, 0.5A per channel, transistor source
• BMXDDO3202K: 32-channel 24VDC discrete output, connector block, 0.1A per channel
• BMXDRA0805: 8-channel relay output, 5A per channel, 24–240VAC/VDC

Analog Input (AI) Modules

• BMXAMI0410: 4-channel analog input, ±10V / 0–20mA / 4–20mA, 12-bit resolution
• BMXAMI0800: 8-channel analog input, 0–10V / 4–20mA, 12-bit, single-ended
• BMXART0414: 4-channel RTD/thermocouple input, Pt100/Pt1000/TC types, 16-bit

Analog Output (AO) Modules

• BMXAMO0210: 2-channel analog output, ±10V / 0–20mA, 12-bit resolution
• BMXAMO0410: 4-channel analog output, ±10V / 4–20mA, 12-bit, short-circuit protected

Communication & Network Adapters

• BMXNOE0100: Ethernet TCP/IP communication module, 10/100 Mbps, Modbus TCP server
• BMXNOE0110: Ethernet module with web server, FTP, SNMP, email notification
• BMXNOC0401: CANopen master module, 127 nodes, 1Mbps, DS301/DS401 profiles

Power Supply Modules

• BMXCPS2000: 20W rack power supply, 24VDC input, for 4/8-slot racks
• BMXCPS3500: 35W rack power supply, 100–240VAC input, universal voltage
• BMXCPS3540T: 35W power supply, 100–240VAC, conformal coating, extended temperature

Sourcing Hard-to-Find & Obsolete BMX Parts

DriveKNMS maintains a dedicated inventory program for Modicon M340 BMX modules, including models that have transitioned to Schneider Electric's End of Commercialization (EOC) or End of Repair (EOR) status. Our sourcing network covers factory-surplus, de-installed, and tested-refurbished units for CPU modules (BMXP341000, BMXP342000), legacy communication adapters (BMXNOE0100), and high-density I/O modules (BMXDDI6402K, BMXDDO3202K) that carry extended lead times through standard distribution channels.

All sourced units are cross-referenced against Schneider Electric's firmware compatibility matrix prior to dispatch. For facilities operating under IEC 61511 SIL requirements, DriveKNMS provides module-level traceability documentation upon request. Emergency same-day quotation is available for critical process shutdowns.

Quality Control for the BMX Range

BMX modules undergo a structured test protocol at DriveKNMS prior to shipment. Each module is bench-powered using a calibrated BMXCPS3500 power supply and inserted into a reference M340 rack running Unity Pro v13.1. Discrete I/O modules (BMXDDI/BMXDDO series) are verified against all 32 or 64 channel states using a dedicated I/O simulator. Analog modules (BMXAMI/BMXAMO) are calibrated against a traceable reference signal source across the full input/output range. CPU modules are loaded with a diagnostic application to verify Ethernet port integrity, memory read/write cycles, and CANopen bus initialization. Communication modules (BMXNOE/BMXNOC) are tested for TCP/IP connectivity, Modbus TCP transaction throughput, and web server response. All test results are logged and available upon request.