Schneider Electric Modicon M340 Modules: BMXDDO6402K

Technical Dossier

Product Details And Specifications

Schneider Electric Modicon M340 Series Technical Notes

The Modicon M340 is Schneider Electric's mid-range programmable automation controller (PAC) platform, deployed across global heavy industry 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 established itself as the dominant DIN-rail-mounted PAC in its class. Its modular backplane architecture, native Ethernet connectivity, and IEC 61131-3 compliance made it the reference platform for process engineers specifying new installations through the 2010s. The BMXDDO6402K is a 64-channel transistor discrete output module within this ecosystem, designed for high-density digital control in confined cabinet footprints.

The Evolution of Modicon M340 Architecture

The M340 platform launched with the BMX CPU series and a parallel I/O bus architecture that allowed up to 8 local I/O modules per rack. Early firmware revisions (pre-V2.0) had limitations in hot-standby redundancy and Ethernet/IP scanner capacity. From V2.3 onward, Schneider introduced enhanced CANopen master functionality and expanded the supported module count via the BMXXBP extension bus. The introduction of the BMEP58 Ethernet CPU variants in later production runs added dual-port Ethernet with Device Net and Profibus DP master capability, significantly extending the platform's fieldbus reach. Compatibility between early BMX backplanes (BMXXBP0400, BMXXBP0800) and later high-density I/O modules such as the BMXDDO6402K is maintained at the hardware level, though firmware alignment between CPU and I/O modules must be verified. The M340 platform is now in a mature/sustained phase; Schneider Electric continues to supply spare modules but has directed new designs toward the Modicon M580 ePAC platform. For installed M340 bases, long-term maintenance sourcing is the primary operational concern.

Modicon M340 Full Catalog & Functionalities (SKU List)

Discrete Output Modules

• BMXDDO6402K: 64-channel transistor discrete output module, 24 VDC, source type, 0.1 A per channel, high-density cabinet use
• BMXDDO3202K: 32-channel transistor discrete output, 24 VDC source, 0.5 A per channel, standard density
• BMXDDO1602: 16-channel relay discrete output module, 24–240 VAC/VDC, 2 A per channel, isolated outputs
• BMXDDO1612: 16-channel transistor discrete output, 24 VDC source, 0.5 A per channel, standard I/O bus

Discrete Input Modules

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

Analog I/O Modules

• BMXAMI0410: 4-channel analog input, 4–20 mA / 0–10 V, 16-bit resolution
• BMXAMI0800: 8-channel analog input, current/voltage configurable, 16-bit
• BMXAMO0210: 2-channel analog output, 4–20 mA / 0–10 V, 16-bit resolution
• BMXAMO0410: 4-channel analog output, current/voltage, 16-bit, spring terminal
• BMXART0414: 4-channel RTD/thermocouple input, multi-sensor type, 16-bit

CPU / Controller Modules

• BMXP341000: M340 CPU, 256 KB application memory, CANopen master, Modbus serial
• BMXP342000: M340 CPU, 512 KB application memory, CANopen + Ethernet 10/100
• BMXP342020: M340 CPU, 512 KB, dual Ethernet ports, Device Net scanner capable
• BMXP3420302: M340 CPU, 1 MB application memory, Profibus DP master, Ethernet
• BMXP58400: M340-compatible ePAC CPU (M580 transition), dual Ethernet, IEC 61850

Power Supply Modules

• BMXCPS2000: 24 VDC input power supply, 20 W, standard rack
• BMXCPS3500: 100–240 VAC input power supply, 35 W, standard rack
• BMXCPS3020: 24 VDC redundant-ready power supply, 30 W

Communication & Fieldbus Modules

• BMXNOE0100: Ethernet TCP/IP communication module, 10/100 Mbps, Modbus TCP server
• BMXNOE0110: Ethernet module with web server and FTP, SNMP support
• BMXNRP0200: Fiber optic repeater module for extended rack distance