Schneider Electric Modicon M340 Modules: BMXAMO0410

Technical Dossier

Product Details And Specifications

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

The Modicon M340 is Schneider Electric's mid-range programmable automation controller (PAC) platform, deployed across heavy industrial sectors including petrochemical refineries, nuclear auxiliary systems, offshore platforms, water treatment facilities, and continuous-process manufacturing. Introduced in the mid-2000s as the successor to the Modicon Quantum and TSX Premium lines for mid-tier applications, the M340 platform has accumulated a global installed base measured in hundreds of thousands of racks. Its compact DIN-rail and panel-mount form factor, combined with IEC 61131-3 programming via Unity Pro / EcoStruxure Control Expert, made it the default choice for process skids and machine automation requiring deterministic scan times under 10 ms. The BMXAMO0410 is a 4-channel high-level analog output module within this platform, providing ±10 V / 0–20 mA / 4–20 mA configurable outputs at 12-bit resolution, used extensively in valve positioner control, variable-speed drive setpoint transmission, and process loop regulation.

The Evolution of Modicon M340 Architecture

The M340 platform launched circa 2006 with the BMX backplane architecture, replacing the older Atrium and TSX Premium bus structures. The core design philosophy centered on a single-rack, multi-slot backplane (4, 6, 8, and 12-slot variants: BMXXBP0400, BMXXBP0600, BMXXBP0800, BMXXBP1200) with a proprietary X-Bus for deterministic I/O scanning. Early CPU generations (BMXP341000, BMXP342000) supported Modbus and CANopen natively; subsequent revisions added Ethernet/IP and Modbus TCP via embedded dual-port switches on the BMXP3420302 and BMXP3420302CL (conformal-coated) variants. The NOE communication modules (BMXNOE0100, BMXNOE0110) extended Ethernet connectivity to earlier CPU generations. Power supply evolution moved from single-rail 24 VDC (BMXCPS2000) to redundant 100–240 VAC supplies (BMXCPS3500, BMXCPS3540). As of 2020, Schneider Electric placed the M340 in the mature phase of its lifecycle, with active support continuing but new feature development ceased. Migration paths are documented toward the Modicon M580 (BME platform) with ePAC architecture. For installed-base sites, backward-compatible I/O modules and identical Unity Pro / EcoStruxure Control Expert programming environments reduce migration risk, but the physical backplane and CPU form factors are not interchangeable between M340 and M580.

Modicon M340 Full Catalog & Functionalities (SKU List)

CPU / Controllers

• BMXP341000: M340 CPU, 256 KB, Modbus + CANopen, no Ethernet
• BMXP342000: M340 CPU, 512 KB, Modbus + CANopen, no Ethernet
• BMXP3420102: M340 CPU, 1 MB, embedded 10/100 Ethernet, Modbus TCP
• BMXP3420302: M340 CPU, 4 MB, dual Ethernet ports, Ethernet/IP + Modbus TCP
• BMXP3420302CL: BMXP3420302 conformal-coated variant for harsh environments

Analog Input Modules

• BMXAMI0410: 4-channel analog input, ±10 V / 0–20 mA / 4–20 mA, 12-bit
• BMXAMI0800: 8-channel analog input, ±10 V / 0–20 mA / 4–20 mA, 12-bit
• BMXART0414: 4-channel RTD/thermocouple input, PT100/PT1000/TC types
• BMXART0814: 8-channel RTD/thermocouple input, PT100/PT1000/TC types

Analog Output Modules

• BMXAMO0210: 2-channel analog output, ±10 V / 0–20 mA / 4–20 mA, 12-bit
• BMXAMO0410: 4-channel analog output, ±10 V / 0–20 mA / 4–20 mA, 12-bit — current listing SKU

Digital Input Modules

• BMXDDI1602: 16-channel 24 VDC digital input, sink/source compatible
• BMXDDI3202K: 32-channel 24 VDC digital input, spring-clamp terminal block

Digital Output Modules

• BMXDDO1602: 16-channel 24 VDC digital output, 0.5 A per channel
• BMXDDO3202K: 32-channel 24 VDC digital output, spring-clamp terminal block
• BMXDRA0805: 8-channel relay output, 5 A per channel, 24–240 VAC/VDC

Communication / Network Modules

• BMXNOE0100: Ethernet TCP/IP module, 10/100 Mbps, Modbus TCP server
• BMXNOE0110: Ethernet module with embedded web server and FTP client
• BMXNRP0200: Fiber optic repeater module for extended rack distances

Power Supplies

• BMXCPS2000: 24 VDC power supply, 8 A, for 4/6/8-slot racks
• BMXCPS3500: 100–240 VAC power supply, 8 A, for 12-slot racks
• BMXCPS3540: 100–240 VAC redundant-ready power supply, 8 A

Sourcing Hard-to-Find & Obsolete Modicon M340 Parts

With the M340 platform in its mature lifecycle phase, procurement of specific modules — particularly early CPU revisions (BMXP341000, BMXP342000) and legacy communication cards — is increasingly constrained through standard distribution channels. DriveKNMS maintains a dedicated inventory of M340 modules sourced from decommissioned plant assets, authorized surplus channels, and factory-refurbished stock. For end-users operating M340-based DCS or safety-instrumented systems where a platform migration is not scheduled within the current maintenance cycle, DriveKNMS provides: verified-functional spare modules with full test documentation, long-lead-time procurement for discontinued part numbers, cross-reference support for identifying functional equivalents within the M340 range, and consignment evaluation for surplus M340 assets. Inquiries for specific part numbers, including conformal-coated (CL) variants and high-temperature-rated modules, are handled directly by the technical sales team.

Quality Control for the Modicon M340 Range

M340 modules present specific test challenges due to the X-Bus backplane protocol and the module firmware-dependent initialization sequence. DriveKNMS applies the following verification procedures to all M340 inventory: (1) Backplane communication test — each module is seated in a live M340 rack and polled via Unity Pro / EcoStruxure Control Expert to confirm X-Bus enumeration and module identity response; (2) Analog channel calibration check — for AMI/AMO modules including the BMXAMO0410, all channels are exercised across the full output range (0–20 mA, 4–20 mA, ±10 V) with a calibrated reference meter to verify linearity and 12-bit resolution accuracy; (3) Firmware version logging — module firmware revision is recorded and cross-referenced against Schneider Electric's compatibility matrix for the target CPU firmware; (4) Thermal cycling — modules flagged as field-returned undergo a 4-hour thermal soak at 55°C prior to functional test to screen latent component failures; (5) Visual and connector inspection — backplane edge connector pins, front-panel terminal blocks, and conformal coating integrity (for CL variants) are inspected under magnification.