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 refineries, nuclear auxiliary systems, offshore oil & gas platforms, water treatment infrastructure, and continuous-process chemical plants. The M340 rack architecture supports hot-standby redundancy configurations and is certified to IEC 61131-3, making it a reference platform for safety-instrumented and process-critical applications. Installed base counts in the hundreds of thousands of racks globally, with active deployments spanning facilities operated by major EPC contractors and national energy utilities.

The Evolution of BMX (Modicon M340) Architecture

The Modicon M340 platform was introduced by Schneider Electric in 2006 as the successor to the Modicon Quantum (140-prefix) and Modicon Premium (TSX-prefix) families for mid-range applications. The BMX architecture introduced a unified backplane bus operating at 32-bit width, replacing the proprietary X-Bus of the Premium series. Early revisions (firmware <2.0) supported only Ethernet/IP and Modbus TCP; subsequent hardware revisions added CANopen master capability natively on the CPU module and expanded the analog I/O resolution from 12-bit to 16-bit on select modules. The platform reached general availability maturity around 2010–2012 and entered the sustained/mature lifecycle phase by 2018. As of 2024, Schneider Electric has positioned the Modicon M580 (BMEP/BMEH prefix) as the strategic successor, though M340 hardware remains in active production and full technical support. Compatibility between M340 and M580 racks is not direct — backplane connectors and bus protocols differ — making like-for-like M340 spare parts the only field-replaceable option for existing installations without a full migration project.

Modicon M340 BMX Full Catalog & Functionalities (SKU List)

Power Supply Modules

• BMXCPS2000: 24 VDC input power supply, 20 W output, standard rack.
• BMXCPS2010: 100–240 VAC / 125 VDC input power supply, 20 W, standard rack.
• BMXCPS3020: 24–48 VDC input power supply, 30 W, extended rack.
• BMXCPS3500: 100–240 VAC input power supply, 35 W, extended rack, redundancy-ready.
• BMXCPS4002: 24 VDC input, 40 W, high-availability redundant power supply module.

CPU / Controller Modules

• BMXP341000: M340 CPU, 256 KB application memory, Modbus/CANopen ports.
• BMXP342000: M340 CPU, 512 KB application memory, Ethernet/IP + Modbus TCP.
• BMXP342010: M340 CPU, 512 KB, dual Ethernet ports, enhanced web server.
• BMXP342020: M340 CPU, 1 MB application memory, Ethernet/IP, CANopen master.
• BMXP3420302: M340 CPU, 4 MB memory, dual Ethernet, Safety-ready firmware option.

Digital Input Modules

• BMXDDI1602: 16-channel 24 VDC digital input, sink/source, standard density.
• BMXDDI3202K: 32-channel 24 VDC digital input, high-density, conformal coated.
• BMXDAI1602: 16-channel 100–120 VAC digital input module.

Digital Output Modules

• BMXDDO1602: 16-channel 24 VDC transistor output, 0.5 A per channel.
• BMXDRA0805: 8-channel relay output, 5 A per channel, 24–240 VAC/VDC.
• BMXDDO3202K: 32-channel 24 VDC transistor output, high-density, conformal coated.

Analog Input / Output Modules

• BMXAMI0410: 4-channel analog input, ±10 V / 0–20 mA, 16-bit resolution.
• BMXAMI0800: 8-channel analog input, current/voltage, 16-bit.
• BMXAMO0210: 2-channel analog output, ±10 V / 0–20 mA, 16-bit.
• BMXAMO0410: 4-channel analog output, current/voltage, 16-bit resolution.

Communication & Network Adapter Modules

• BMXNOE0100: Ethernet TCP/IP communication module, 10/100 Mbps, RJ45.
• BMXNOE0110: Ethernet TCP/IP module with embedded web server and FTP services.
• BMXNRP0200: Fiber optic ring adapter for redundant Ethernet topologies.
• BMXEIA0100: CANopen master communication module, 1 Mbps.

Sourcing Hard-to-Find & Obsolete Modicon M340 BMX Parts

DriveKNMS maintains a dedicated inventory program for the Modicon M340 / BMX series, covering both current-production and end-of-life (EOL) modules. For facilities operating M340 racks installed prior to 2012, specific early-revision CPU modules (e.g., BMXP341000 hardware revision <03) and first-generation power supplies (BMXCPS2000 revision A) may no longer be available through standard distribution channels. DriveKNMS sources these components through certified secondary-market channels, performs incoming inspection against original factory specifications, and provides traceability documentation. For long-term maintenance contracts on M340-based DCS or safety systems, DriveKNMS offers consignment stocking agreements to guarantee module availability over a defined support horizon — typically 5 to 10 years beyond the Schneider Electric published EOL date.

Quality Control for the Modicon M340 BMX Range

Each BMX module processed by DriveKNMS undergoes a structured test protocol specific to the M340 backplane architecture. Power supply modules (BMXCPS series) are bench-tested under full resistive load across the rated input voltage range, with output ripple measured against Schneider Electric's published tolerance bands. CPU modules are powered in an isolated M340 rack, firmware version verified, application memory read/write cycled, and all communication ports (Ethernet, CANopen, Modbus serial) exercised with protocol-level handshake confirmation. Digital I/O modules are tested channel-by-channel using a dedicated breakout fixture. Analog modules are calibrated against a traceable reference standard with gain and offset error recorded. All test results are logged per serial number and accompany the shipment as a test certificate.