Product Introduction
When upgrading an existing Modicon M340 automation platform or building a new control system, the Schneider BMXP3420302 processor module delivers the performance and connectivity your application demands. This processor module is designed to handle up to 1024 discrete I/O points in multi-rack configurations and 256 analog I/O channels, making it a versatile choice for mid-sized industrial processes.
Part of the Modicon M340 family, the BMXP3420302 integrates seamlessly with CANopen and Ethernet networks, providing real-time control and data exchange. Whether you are replacing an older CPU or expanding your system, this module offers a cost-effective path to modernized automation.
Technical Specifications Breakdown
The Schneider BMXP3420302 processor module boasts a robust set of technical parameters. Key specifications include:
- Discrete I/O capacity: 1024 I/O (multi-rack), 704 I/O (single-rack)
- Analog I/O capacity: 256 I/O (multi-rack), 66 I/O (single-rack)
- Memory: 4096 kB internal RAM (3840 kB program/data, 256 kB data)
- Execution speed: 0.12 μs per Boolean instruction
- Integrated communication: USB, CANopen master, Ethernet TCP/IP
- Maximum number of racks: 4
- Current consumption: 135 mA at 24 V DC
- Operating temperature: 32…140 °F (0…60 °C)
These specs ensure the BMXP3420302 can handle complex logic and fast control loops. The CANopen interface supports up to 63 devices with data rates from 20 kbit/s to 1 Mbit/s, while the Ethernet port enables transparent ready services like Modbus TCP messaging and SNMP.
Compatibility & Integration
The BMXP3420302 is built for the Modicon M340 platform and works with a wide range of I/O modules, communication modules, and accessories. It supports up to 2 Ethernet communication modules and 4 AS-Interface modules. The CANopen master bus allows connection to distributed I/O and drives, while the USB port facilitates local programming and diagnostics.
For system integration, the processor can manage both CANopen devices linked by daisy-chaining and Ethernet TCP/IP networks. It is compliant with standards such as EN 61131-2, UL 61010-2-201, and CSA C22.2 No 61010-2-201, ensuring reliable operation in various industrial environments.
Installation & Setup Guidance
Installing the Schneider BMXP3420302 processor module is straightforward. The module mounts directly onto the rack (up to 4 racks, 11 slots total) and receives its power internally via the rack. Before installation, verify that the rack is properly grounded and the power supply meets the 24 V DC requirement.
Connect the CANopen bus using a SUB-D 9 connector with two twisted shielded pairs. For Ethernet, use an RJ45 connection with one twisted pair. Ensure that the network topology (daisy-chain or tap junctions) follows the CSMA/CA protocol. During initial setup, use the USB port to load the operating system and configure communication parameters.
Maintenance & Reliability
Routine maintenance of the BMXP3420302 focuses on environmental conditions and data backups. The module operates reliably between 32°F and 140°F and requires a relative humidity of 10–95% without condensation. It is protected with IP20, making it suitable for clean, dry control cabinets.
Periodic inspection of the status LEDs can quickly identify faults. For example, a red 'ERR' LED indicates a processor or system fault, while a red 'I/O' LED signals an I/O module fault. Back up the program and constants using the supplied memory card (BMXRMS008MP) to protect against data loss.
Selection Guide & Purchasing Advice
Before purchasing the Schneider BMXP3420302, verify that your rack configuration supports the number of I/O points you need. If you require more than 1024 discrete I/O, consider a higher-level processor. For new installations, order the compatible memory card (BMXRMS008MP) and ensure you have the correct programming software.
UBEST Automation offers this processor module with reliable supply and competitive pricing. To confirm availability and compatibility with your existing system, contact our team. We stock genuine Schneider automation spares to minimize your downtime.