Is Your Control System Struggling to Keep Up with Growing I/O Demands?
As industrial processes become more complex, legacy processors often hit their limits, causing bottlenecks and unplanned downtime. The BMXP3420102 processor module from Schneider Electric addresses this challenge head-on. Designed for the Modicon M340 automation platform, this module delivers robust processing power and flexible communication options to keep your operations running smoothly.
Product Overview
The BMXP3420102 is a processor module that serves as the brain of your Modicon M340 system. It supports up to 4 racks and 11 slots, accommodating a maximum of 1024 discrete I/O points in a multi-rack configuration. For analog signals, it handles up to 256 I/O points, making it suitable for a wide range of applications. With integrated communication ports including Modbus, CANopen, and USB, this module ensures seamless integration into your existing network.
Key Technical Specifications
The BMXP3420102 offers impressive processing capabilities. It executes Boolean instructions in just 0.12 µs and floating-point operations in 1.16 µs, ensuring rapid response times for your control logic. The module includes 4096 kB of internal RAM, with 256 kB dedicated to data and 3584 kB for program constants and symbols. It also features a supplied memory card (BMXRMS008MP) for program backup.
Communication is a strong suit. The module includes non-isolated serial links (RS232C and RS485) via RJ45, supporting Modbus RTU/ASCII and character mode. The CANopen master bus supports data rates from 20 kbit/s to 1 Mbit/s, with segment lengths up to 2500 m at 20 kbit/s. Additionally, a USB port provides 12 Mbit/s connectivity for programming and diagnostics.
Industry Applications
In automotive manufacturing, the BMXP3420102 can manage assembly line control, handling discrete I/O for robots and conveyors while using CANopen for motion control. In water treatment plants, its analog I/O capacity allows precise monitoring of flow and pressure, with Modbus connecting to SCADA systems. For building automation, the module integrates HVAC and lighting controls, leveraging its multiple communication ports for seamless data exchange.
Installation and Setup
Installing the BMXP3420102 is straightforward. It mounts directly into the Modicon M340 rack, and the integrated connections simplify wiring. Ensure the rack’s power supply can deliver the required 90 mA at 24 V DC. The module operates in ambient temperatures from 0…60 °C and requires a relative humidity of 10…95% without condensation. For optimal performance, follow Schneider Electric’s installation guidelines and verify proper grounding.
Maintenance and Reliability
The BMXP3420102 is built for reliability, with status LEDs for quick diagnostics. Regular inspection of connections and the memory card is recommended. The module’s IP20 rating means it should be installed in a clean, dry environment. With proper care, it can provide years of dependable service, reducing downtime and maintenance costs.
Compatibility and Integration
The BMXP3420102 integrates seamlessly with other Modicon M340 modules and supports a variety of communication protocols. It can connect to Ethernet communication modules, AS-Interface modules, and third-party devices via Modbus or CANopen. This flexibility makes it an ideal choice for both new installations and upgrades.
Selection Guide
When selecting the BMXP3420102, verify that your application requires up to 1024 discrete I/O or 256 analog I/O. Ensure compatibility with your existing M340 racks and power supply. For spare parts or additional modules, SpareTechPLC offers a wide range of industrial automation components. Contact us for availability and pricing.
Frequently Asked Questions
What is the maximum number of I/O points supported by the BMXP3420102?
The module supports up to 1024 discrete I/O points in a multi-rack configuration and 256 analog I/O points.
Can the BMXP3420102 communicate over Ethernet?
No, the BMXP3420102 does not have an integrated Ethernet port. However, it supports up to 2 Ethernet communication modules via the rack.
What is the power consumption of the BMXP3420102?
The module consumes 90 mA at 24 V DC, supplied via the rack’s internal power supply.
Is the BMXP3420102 suitable for hazardous locations?
Yes, it is certified for Class I Division 2 hazardous locations, making it suitable for use in certain industrial environments.
What memory card is used with the BMXP3420102?
The module uses the BMXRMS008MP memory card for program backup.

