Schneider BMXP342000 Processor | Modicon M340 Modbus

Product Introduction

The Schneider Electric BMXP342000 processor module serves as the intelligent core for the Modicon M340 automation platform. This compact yet powerful controller manages up to 1024 discrete I/O points in a single-rack configuration. It also handles 256 analog I/O points in multi-rack setups. The processor integrates multiple communication options, including non-isolated serial links for Modbus RTU/ASCII and character mode protocols. Additionally, it features a USB port for convenient programming and diagnostics. The BMXP342000 supports one master task, one periodic fast task, and 32 event tasks. This flexibility allows you to structure your application for optimal performance. The module draws only 72 mA at 24V DC from the internal rack power supply. Its compact standard format fits into any M340 rack slot. Consequently, this processor delivers a balanced solution for mid-range automation applications.

Technical Specifications

The BMXP342000 offers substantial I/O capacity and processing power for diverse applications. This processor supports a maximum of 1024 discrete I/O in a single-rack configuration. For analog I/O, it handles up to 256 channels in multi-rack configuration and 66 channels in single-rack configuration. The processor manages 36 application-specific channels and supports programmable control loops. It accommodates up to 2 Ethernet communication modules and 4 AS-Interface modules, expanding your connectivity options.

The memory architecture provides ample space for your programs and data. Internal RAM totals 4096 kB, comprising 256 kB for data, and 3584 kB for program constants and symbols. The supplied memory card (BMXRMS008MP) backs up programs, constants, symbols, and data. The maximum object area sizes include 128 kB of unlocated internal data, 16250 %Mi located internal bits, 32464 %MWi internal words, and 32760 %KWi constant words. Execution times demonstrate impressive speed, with 0.18 µs for Boolean operations, 0.26 µs for double-length words, 0.38 µs for single-length words, and 1.74 µs for floating points. The processor executes 5.4 Kinstructions per ms for 100% Boolean logic and 4.2 Kinstructions per ms for mixed operations.

Communication Capabilities

The BMXP342000 provides versatile integrated communication options for connectivity. It features non-isolated serial links with RJ45 connectors supporting both RS232C and RS485 physical layers. These links operate in asynchronous baseband mode at speeds from 0.3 to 19.2 kbit/s. The processor supports both Modbus RTU/ASCII and character mode protocols. For Modbus, it handles master/slave configurations with half-duplex communication. For character mode, it supports full-duplex RS232C and half-duplex RS485 configurations.

Furthermore, the BMXP342000 includes a USB port running at 12 Mbit/s for direct programming access. This port simplifies commissioning and diagnostics. The serial link segment lengths reach up to 10 meters for non-isolated connections and up to 1000 meters for isolated connections. Point-to-point distances extend to 15 meters. The processor addresses up to 248 devices in both character mode and Modbus configurations. Request handling supports 1 K data bytes per request in character mode, 252 data bytes per RTU request, and 504 data bytes per ASCII request. The module includes CRC checking for RTU frames and LRC checking for ASCII frames, ensuring data integrity.

Mechanical and Environmental Parameters

The BMXP342000 operates reliably in typical industrial environments. The ambient air temperature for operation spans 32 to 140 °F (0 to 60 °C). It tolerates a relative humidity of 10 to 95% without condensation. The IP degree of protection stands at IP20, suitable for installation in protected cabinets. The module includes protective treatment (TC) for enhanced durability.

This processor holds numerous global certifications, including CE, UL, CSA, RCM, EAC, and Merchant Navy. It complies with EN 61131-2, EN/IEC 61010-2-201, UL 61010-2-201, and CSA C22.2 No 61010-2-201 standards. The BMXP342000 also meets hazardous location Class I Division 2 requirements. It conforms to EN/IEC 61000-6-5 interface type 1 and type 2, and EN/IEC 61850-3 location G standards. These certifications make the module suitable for a wide range of industrial applications globally.

Application Structure and Performance

The BMXP342000 supports a flexible application structure to meet various control requirements. The processor executes one cyclic/periodic master task, one periodic fast task, and 32 event tasks. It does not support auxiliary tasks, but the available task structure handles most mid-range applications effectively. The system overhead measures 0.2 ms for the fast task and 1.05 ms for the master task. This efficient scheduling ensures responsive control for your processes.

The processor's diagnostic capabilities include Modbus diagnostic counters and event counters. These tools help you monitor communication health and system performance. The BMXP342000 also supports memory card backup via the supplied BMXRMS008MP card. This backup preserves your programs, constants, symbols, and data during power loss. The module's high execution speed and robust memory make it suitable for complex control strategies, including PID loops and sequential control.

Installation Guidance

Installing the BMXP342000 processor requires following a straightforward procedure. First, ensure your M340 rack has an available slot for this module. The compact unit slides into the rack and locks securely into place. Connect the module to the backplane for power and communication. The internal power supply draws only 72 mA at 24V DC. Next, connect your programming device via the USB port or configure the serial links for Modbus communication. The RJ45 connectors accept standard cables for RS232C or RS485 connections. After securing all connections, apply power to the rack. Observe the RUN LED to confirm normal operation. If the ERR or I/O LEDs illuminate, check your configuration and wiring. Finally, download your application program using EcoStruxure Control Expert or Unity Pro software.

Packaging and Logistics

Your purchase of the Schneider BMXP342000 arrives in secure factory packaging. The product ships in its original box to guarantee safe transit. The package dimensions measure 5.5 cm in height, 11.0 cm in width, and 11.5 cm in length. The single package weight comes to 0.24 kg. Additionally, a secondary package (S02) contains 15 units and weighs 3.915 kg. This compact packaging facilitates efficient storage and shipping. We dispatch all orders with careful attention to packaging quality.

Shipping Methods

We prioritize fast and reliable delivery for all our automation products. Therefore, we partner with the world's leading logistics providers. We ship all orders via FedEx, UPS, and DHL. These carriers offer excellent tracking capabilities and global reach. You can monitor your shipment status from dispatch until final delivery. Our logistics team handles every package with professional care.

Packaging List

• 1 x Schneider Electric BMXP342000 Processor Module

• 1 x Installation and Configuration Manual

• 1 x Memory Card (BMXRMS008MP)

• 1 x Product Identification Label

FAQ

Q1: What is the maximum I/O capacity of the BMXP342000?
A: The Schneider Electric BMXP342000 supports up to 1024 discrete I/O in a single-rack configuration. For analog I/O, it handles up to 256 channels in multi-rack configurations.

Q2: What communication options does the BMXP342000 include?
A: The BMXP342000 includes non-isolated serial links supporting Modbus RTU/ASCII and character mode protocols. It also features a USB port for programming and diagnostics.

Q3: How much memory does the BMXP342000 processor provide?
A: The BMXP342000 offers 4096 kB of internal RAM total. This includes 256 kB for data and 3584 kB for program constants and symbols. The unit also includes a memory card for backup.

Q4: What software do I need to program the BMXP342000?
A: You can program the BMXP342000 using EcoStruxure Control Expert or Unity Pro software. These platforms support the full range of the processor's capabilities.

Q5: What is the execution speed of the BMXP342000?
A: The BMXP342000 executes Boolean operations in just 0.18 µs. It achieves a throughput of 5.4 Kinstructions per ms for 100% Boolean logic and 4.2 Kinstructions per ms for mixed operations.