Product Overview
When harsh industrial conditions demand reliable control, the Schneider BMXP342020H Processor Module delivers robust performance. Part of the Modicon M340 automation platform, this processor is specifically engineered for severe environments, handling extreme temperatures from -13 to 158 °F (-25 to 70 °C) and resisting gas, dust, sand, salt, and mold growth. With a maximum capacity of 1024 discrete I/O and 256 analog I/O in multi-rack configurations, it provides the processing power needed for demanding applications.
Technical Specifications Breakdown
The BMXP342020H offers impressive processing speed: 0.12 µs for Boolean instructions, 0.17 µs for double-length words, 0.25 µs for single-length words, and 1.16 µs for floating points. It executes 8.1 K instructions per ms (100% Boolean) or 6.4 Kinst/ms (65% Boolean + 35% fixed arithmetic). The module includes an internal RAM of 4096 kB total, with 256 kB for data and 3584 kB for programs, constants, and symbols. A supplied memory card (BMXRMS008MP) backs up programs, constants, symbols, and data, and activates the standard web server (class B10).
Industry Applications
This processor excels in applications requiring high reliability in harsh conditions, such as oil and gas, chemical processing, and marine environments. Its ATEX Zone 2/22 and IECEx Zone 2/22 certifications make it suitable for potentially explosive atmospheres. The conformal coating protects against moisture and contaminants, ensuring long-term operation in dusty or corrosive settings. For example, in a refinery, the BMXP342020H can manage up to 1024 discrete I/O points across 4 racks, coordinating with 2 Ethernet communication modules and 4 AS-Interface modules for comprehensive process control.
Installation & Setup Guidance
Mount the BMXP342020H onto a Modicon M340 rack using the internal power supply via the rack. Connect the non-isolated serial link via RJ45 for Modbus (RS232C or RS485) at baud rates from 0.3 to 19.2 kbit/s. Use the Ethernet TCP/IP RJ45 port (10/100 Mbit/s) for network integration. The USB port (12 Mbit/s) facilitates local programming. Ensure the ambient temperature remains within -13 to 158 °F and relative humidity between 10-95% without condensation. The IP20 rating requires installation in a clean, dry enclosure.
Maintenance & Reliability
Regular inspection of the BMXP342020H should focus on the status LEDs: RUN (green), ERR (red), I/O (red), CARD ERR (red), ETH ACT (green), ETH STS (green), ETH 100 (red), and SER COM (yellow). These provide immediate visual feedback on processor, I/O, memory card, and communication status. The module's protective conformal coating and resistance to gas (ISA S71.04 class Gx, IEC 60721-3-3 class 3C4), dust (class 3S4), sand (class 3S4), salt (IEC 68252 level 2), and mold (class 3B2) reduce maintenance needs. Follow manufacturer guidelines for periodic testing to ensure continued reliability in severe environments.
Compatibility & Integration
The BMXP342020H integrates seamlessly with the Modicon M340 platform. It supports embedded communication services including Ethernet TCP/IP bandwidth management, data editor, Modbus TCP messaging, rack viewer, and SNMP network administrator. The processor can manage up to 2 Ethernet communication modules and 4 AS-Interface modules. It supports Modbus RTU/ASCII and character mode communication on RS232C and RS485 networks, with up to 248 addresses per segment. The module also supports CANopen and Transparent Ready concepts.
Selection Guide & Purchasing Advice
Before purchasing the BMXP342020H, verify your system requirements: ensure compatibility with your existing Modicon M340 rack and power supply. The module supports up to 4 racks and 11 slots. Confirm that your I/O count (discrete and analog) falls within the processor's capacity. For single-rack configurations, the processor handles 704 discrete I/O and 66 analog I/O. SpareTechPLC offers this processor with fast shipping and expert support to help you select the right automation components for severe environment applications.
Frequently Asked Questions
Q: What is the maximum number of discrete I/O supported by the BMXP342020H?
A: The BMXP342020H supports up to 1024 discrete I/O in a multi-rack configuration and 704 discrete I/O in a single-rack configuration.
Q: What communication protocols does the BMXP342020H support?
A: It supports Modbus RTU/ASCII (master/slave) and character mode on RS232C and RS485 serial links, as well as Ethernet TCP/IP at 10/100 Mbit/s.
Q: Is the BMXP342020H suitable for hazardous locations?
A: Yes, it is certified for ATEX Zone 2/22, IECEx Zone 2/22, and Class I Division 2 hazardous locations.
Q: What memory is included with the BMXP342020H?
A: The module includes 4096 kB internal RAM (256 kB data, 3584 kB program/constants/symbols) and a supplied BMXRMS008MP memory card for backup and web server activation.
Q: What is the operating temperature range for the BMXP342020H?
A: The operating ambient air temperature range is -13 to 158 °F (-25 to 70 °C).
