Schneider Electric BMXP3420102 Modicon M340 Processor — Up to 1024 Discrete / 256 Analog I/O, CANopen (63 nodes), Modbus, 4‑Rack, 2× Ethernet, USB, 24 V DC, IP20

The Schneider Electric BMXP3420102 is a Modicon M340 series processor module designed for Programmable Automation Controller (PAC) applications. It supports multi‑rack and single‑rack configurations with high discrete and analog I/O capacity, integrated CANopen and Modbus communications, and embedded services for industrial network management. The module is supplied with a memory card for program and data backup and is intended for demanding process, infrastructure and OEM automation applications.

Key specifications

• Manufacturer: Schneider Electric
• Model: BMXP3420102 (Modicon M340 processor)
• Architecture: Modicon M340 automation platform; up to 4 racks supported
• Discrete I/O processor capacity: up to 1024 (multi‑rack); 704 (single‑rack)
• Analog I/O processor capacity: up to 256 (multi‑rack); 66 (single‑rack)
• Number of application‑specific channels: 36
• CANopen: CANopen master supporting up to 63 CANopen server devices; transmission rates from 20 kbit/s to 1 Mbit/s (including 800 kbit/s up to 40 m, 500 kbit/s up to 100 m, 125 kbit/s up to 500 m — see datasheet for distance vs. rate)
• Modbus: Master/slave RTU/ASCII via RS485/RS232 serial interfaces; up to 252 data bytes per RTU request (Modbus RTU)
• Embedded communication capacity: up to 2 Ethernet communication modules and up to 4 AS‑Interface modules supported by the processor
• Serial interfaces: Non‑isolated RJ45 serial links (character mode and Modbus) supporting RS232C/RS485 as specified; USB port (12 Mbit/s) for local access
• Memory: Supplied memory card BMXRMS008MP for backup; internal RAM totals: 4096 kB (internal), 256 kB (data), 3584 kB (program, constants and symbols)
• Execution performance: 0.12 µs Boolean; 0.17 µs double‑length word; 0.25 µs single‑length word; 1.16 µs floating point. Typical instruction throughput: up to 6.4 Kinst/ms (mixed load) or 8.1 Kinst/ms (Boolean)
• Tasks/support: 1 cyclic/periodic master task, 1 periodic fast task, up to 64 event tasks; no auxiliary task
• Power / consumption: 24 V DC internal rack supply; current consumption 90 mA at 24 V DC
• Indicators: RUN (green), CAN RUN (green), SER COM (yellow), I/O, CAN ERR, CARD ERR, ERR (red) status LEDs
• Mechanical / environmental: Net weight 0.21 kg; IP20; operating ambient 0…60 °C; relative humidity 5…95 % non‑condensing
• Certifications & standards: CE, UL, CSA, RCM, EAC, UKCA; complies with IEC/EN 61131‑2, IEC/EN 61000‑6‑4, IEC/EN 61000‑6‑2 and IEC/EN 61010‑2‑201 among others
• Packaging: single unit package 12.4 × 11.5 × 5.4 cm; package weight 249 g
• Warranty: 18 months (contractual)
• Firmware: Latest available M340 BMXP34xxxxx Firmware SV03.65 (verify downloads on Schneider Electric support site)

Features & benefits

• High I/O capacity for large distributed installations: supports up to 1024 discrete and 256 analog I/O in multi‑rack systems.
• Integrated CANopen master with up to 63 nodes and full CANopen services (PDO, SDO, NMT, SYNC, EMCY, TIME) for motion and device networks.
• Multi‑protocol connectivity: Modbus RTU/ASCII, serial character mode and Ethernet module support for modern networks and legacy integration.
• Robust performance and deterministic task structure suitable for process control, renewable energy, water, cement, manufacturing and infrastructure.
• Onboard memory card for program and data backup simplifies maintenance and field replacement.

Applications

• Central processor for Modicon M340 PLC/PAC systems in industrial control cabinets
• Distributed automation using CANopen field devices and Modbus networks
• Process control, water treatment, renewable energy inverters, machine control and OEM automation requiring high I/O density

Installation and service notes

• Install in IP20 rated control enclosure; observe ambient limits and EMC grounding practices.
• Use provided memory card (BMXRMS008MP) for backup; replace only with Schneider‑approved cards.
• Verify CANopen bus topology, transmission rates and cable lengths per application; consult datasheet for distance vs. bit‑rate guidance.
• Firmware updates should follow Schneider Electric procedures; current recommended firmware SV03.65 (confirm on support portal).
• Refer to official datasheet, user guide and CAD files for mechanical mounting, wiring diagrams and detailed configuration procedures.

Documentation

• Product datasheet, user guide, instruction sheet, catalog, CAD and environmental disclosure available from Schneider Electric support portal.