Product Overview
When your automation system demands reliable control and flexible I/O handling, the Schneider BMXP3420302 processor module delivers. This Modicon M340 processor supports up to 1024 discrete I/O in a multi-rack configuration and up to 704 discrete I/O in a single-rack setup. It also handles 256 analog I/O in a multi-rack configuration and 66 analog I/O in a single-rack configuration. With integrated CANopen and Ethernet TCP/IP communication, the BMXP3420302 fits seamlessly into distributed control architectures.
Technical Specifications Breakdown
I/O Capacity: The BMXP3420302 manages 1024 discrete I/O points in multi-rack mode and 704 in single-rack mode. For analog signals, it supports 256 I/O in multi-rack and 66 in single-rack configurations. This scalability makes it suitable for both compact and large-scale applications.
Communication Interfaces: The module includes a USB port (12 Mbit/s), a CANopen master bus (SUB-D 9, 20 kbit/s to 1 Mbit/s), and an Ethernet TCP/IP port (RJ45, 10/100 Mbit/s). The CANopen bus supports up to 63 server devices with various baud rates and cable lengths.
Memory and Performance: Internal RAM totals 4096 kB, with 256 kB for data and 3584 kB for program, constants, and symbols. A supplied memory card (BMXRMS008MP) backs up programs and constants. Execution times are 0.12 µs for Boolean instructions and 1.16 µs for floating-point operations.
Environmental Ratings: The module operates in ambient temperatures from 32 to 140 °F (0 to 60 °C) and relative humidity of 10 to 95% without condensation. It carries an IP20 degree of protection and is certified CE, UL, CSA, RCM, EAC, and Merchant Navy.
Industry Applications
Manufacturing Lines: In automotive or packaging lines, the BMXP3420302 coordinates multiple I/O points and motion control axes via CANopen. Its 36 application-specific channels handle specialized sensors or actuators.
Process Control: For chemical or water treatment plants, the processor manages analog I/O loops and communicates over Ethernet TCP/IP for SCADA integration. The 256 analog I/O capacity supports numerous process variables.
Building Automation: The module's CANopen master bus connects HVAC, lighting, and access control devices. Its multi-rack support allows expansion across several cabinets.
Installation & Setup Guidance
Mount the BMXP3420302 in a Modicon M340 rack using the internal power supply from the rack. Connect the CANopen bus via the SUB-D 9 connector with twisted shielded pairs. For Ethernet, use a standard RJ45 cable with one twisted pair. Ensure the ambient temperature stays within 32 to 140 °F and avoid condensation. The module's IP20 rating means it should be installed in a clean, dry enclosure.
Maintenance & Reliability
Regularly inspect the status LEDs for quick diagnostics: green LEDs for Ethernet activity (ETH ACT), CANopen bus operational (CAN RUN), processor running (RUN), and Ethernet status (ETH STS). Red LEDs indicate faults on I/O (I/O), CANopen bus (CAN ERR), memory card (CARD ERR), or processor/system (ERR). A yellow LED shows Modbus activity (SER COM). Keep the memory card (BMXRMS008MP) inserted for program backup. The module's protective treatment (TC) enhances durability in industrial environments.
Compatibility & Integration
The BMXP3420302 integrates with Modicon M340 racks, supporting up to 4 racks and 11 slots. It works with up to 2 Ethernet communication modules and 4 AS-Interface modules. CANopen services include network management (NMT), Process Data Object (PDO), Service Data Object (SDO), and special functions (SYNC, EMCY, TIME). Ethernet services include bandwidth management, data editor, Modbus TCP messaging, rack viewer, and SNMP network administration. The module is compatible with CANopen DS 301 V4.02, DS 303-2, and DS 405 profiles.
Selection Guide & Purchasing Advice
Before ordering, verify your rack configuration and I/O requirements. The BMXP3420302 suits systems needing up to 1024 discrete or 256 analog I/O. Confirm you have the required memory card (BMXRMS008MP) for program backup. SpareTechPLC stocks this processor module and can advise on compatible racks and accessories. Please verify current lifecycle status and availability with SpareTechPLC before ordering.
Frequently Asked Questions
Q1: What is the maximum number of discrete I/O the BMXP3420302 supports?
A1: The BMXP3420302 supports up to 1024 discrete I/O in a multi-rack configuration and 704 in a single-rack configuration.
Q2: Does the BMXP3420302 include a memory card?
A2: Yes, it is supplied with a BMXRMS008MP memory card for backup of programs, constants, symbols, and data.
Q3: What communication protocols are supported?
A3: The module supports CANopen (master bus) and Ethernet TCP/IP, including Modbus TCP messaging and SNMP network administration.
Q4: What is the operating temperature range?
A4: The BMXP3420302 operates in ambient temperatures from 32 to 140 °F (0 to 60 °C).
Q5: How many racks can the processor control?
A5: It supports up to 4 racks with a total of 11 slots.
