Product Overview: Schneider Electric BMXP342020

The BMXP342020 provides a cost-effective control solution for small to mid-sized machines. This processor module supports both Modbus and Ethernet TCP/IP networks. It includes a USB port for fast program uploads and downloads. The BMXP342020 operates with Transparent Ready technology. This ensures seamless integration with enterprise information systems.

Technical Specifications

The BMXP342020 has generous memory for its class. Internal RAM provides 4096 kB total capacity. Program and constants storage uses 3584 kB of this space. Data memory is 256 kB for variables and tags. The supplied memory card (BMXRMS008MP) backs up all programs.

• Program Memory: 3584 kB for program, constants, and symbols

• Data Memory: 256 kB internal RAM

• Total RAM: 4096 kB

• Discrete I/O Capacity: 1024 points (multi-rack)

• Analog I/O Capacity: 256 channels (multi-rack)

• Application Channels: 36 specific channels

The BMXP342020 offers exceptional execution speed. Boolean instructions execute in just 0.12 microseconds. Single-length word operations take 0.25 microseconds. Floating point math requires 1.16 microseconds per instruction. For mixed logic, the processor runs 6.4 Kinstructions per ms.

I/O Configuration Options

The BMXP342020 supports single and multi-rack configurations. In single-rack mode, it handles 704 discrete I/O points. Single-rack analog capacity is 66 channels. Multi-rack mode supports 4 racks total. Each rack can hold up to 11 I/O modules.

• Maximum Racks: 4 racks total

• Maximum Slots per Rack: 11 slots

• Multi-rack Discrete: 1024 I/O points

• Multi-rack Analog: 256 channels

• Single-rack Discrete: 704 I/O points

• Single-rack Analog: 66 channels

The BMXP342020 supports up to 2 Ethernet communication modules. It also accepts up to 4 AS-Interface modules. The processor works with the full Modicon M340 I/O catalog. This includes digital, analog, and specialty modules. Users can mix module types freely within limits.

Communication Interfaces

The BMXP342020 features multiple integrated communication ports. One Ethernet TCP/IP RJ45 port runs at 10/100 Mbit/s. Two non-isolated serial ports support RS232C and RS485. A USB port provides 12 Mbit/s programming access.

Integrated Ports on the BMXP342020:

• Ethernet: 10BASE-T/100BASE-TX RJ45

• Serial 1: RS232C (character mode or Modbus)

• Serial 2: RS485 (character mode or Modbus)

• USB: Type mini B for programming

• Protocols: Modbus RTU, Modbus ASCII, Modbus TCP

The BMXP342020 supports both master and slave Modbus modes. Modbus RTU handles up to 252 data bytes per request. Modbus ASCII manages up to 504 data bytes. The serial ports operate at speeds from 0.3 to 19.2 kbit/s. Full duplex and half duplex modes are both available.

Embedded Ethernet Services

The BMXP342020 includes a rich set of Ethernet services. Bandwidth management prevents network congestion. The Data Editor allows real-time value monitoring. Modbus TCP messaging connects to drives and HMIs easily. Rack Viewer provides graphical system status.

• SNMP Agent: Network management and diagnostics

• Web Server: Standard web server (class B10 with memory card)

• DHCP/BootP: Automatic IP address assignment

• Email Notifications: SMTP for alarm messages

• NTP: Time synchronization across the network

The BMXP342020 supports up to 32 devices per segment. The maximum bus length for isolated segments is 1000 meters. Non-isolated segments are limited to 10 meters. Point-to-point connections can reach 15 meters. The Ethernet port includes activity and speed LEDs.

Application Structure

The BMXP342020 uses a flexible multitasking architecture. It runs one cyclic periodic master task. A periodic fast task handles high-speed requirements. There are no auxiliary tasks on this model. The processor supports up to 64 event tasks.

• Master Task: Cyclic or periodic execution

• Fast Task: Periodic for time-critical logic

• Event Tasks: 64 maximum for triggered routines

• System Overhead: 0.7 ms for master task

• Fast Task Overhead: 0.13 ms

The BMXP342020 tracks diagnostic and event counters. Modbus diagnostic counters monitor communication health. Event counters record specific system occurrences. This helps troubleshoot intermittent network issues. The processor also supports programmable control loops.

Memory Organization

The BMXP342020 uses a structured memory layout. Internal located data words use 1024 %MWi as default. Constant words use 256 %KWi for fixed values. Located internal bits use 512 %Mi. Unlocated internal data reaches 256 kB maximum.

• %MWi (Internal Words): 1024 default, located data

• %KWi (Constant Words): 256 default, read-only values

• %Mi (Internal Bits): 512 default, 32634 maximum

• Unlocated Data: 256 kB maximum size

• Object Areas: Configurable size for flexibility

The supplied BMXRMS008MP memory card activates advanced features. It enables the standard web server for remote access. The card also backs up programs, constants, and symbols. Data retention is maintained without batteries. This simplifies maintenance and reduces costs.

Environmental Specifications

The BMXP342020 operates in standard industrial environments. Operating temperature ranges from 0 to 60 degrees Celsius. Relative humidity tolerance is 10 to 95 percent without condensation. The IP20 protection rating suits control cabinet installation.

• Operating Temperature: 0°C to 60°C (32°F to 140°F)

• Relative Humidity: 10% to 95%, non-condensing

• IP Rating: IP20 for indoor use

• Protective Treatment: TC (conformal coating)

• Hazardous Location: Class I Division 2 certified

The BMXP342020 meets many international standards. It complies with EN 61131-2 for programmable controllers. Safety standards include EN/IEC 61010-2-201. UL and CSA certifications cover North America. The module holds IACS E10 merchant navy certification. This allows marine and offshore installations.

Certifications and Directives

The BMXP342020 carries global product certifications. CE marking confirms EU regulatory compliance. UL certification covers US safety requirements. CSA certification addresses Canadian standards. RCM applies to Australian and New Zealand markets.

• Certifications: CE, UL, CSA, RCM, EAC, Merchant Navy

• Directives: Low Voltage (2014/35/EU), EMC (2014/30/EU)

• EMC Standards: EN/IEC 61000-6-5 type 1 and 2

• Grid Standards: EN/IEC 61850-3 location G

• Country of Origin: France (FR)

The BMXP342020 has a compact and lightweight design. The module weighs only 0.205 kg (0.452 lb). Package dimensions are 5.5 x 11.0 x 11.5 cm. This small size saves valuable panel space. The processor is easy to install and replace.

Status LEDs

The BMXP342020 features comprehensive status indication. A green RUN LED shows the processor is operating. A red ERR LED indicates a processor or system fault. A red I/O LED illuminates for I/O module problems.

• RUN: Green - Processor running normally

• ERR: Red - Processor or system fault

• I/O: Red - I/O module fault detected

• ETH ACT: Green - Ethernet activity present

• ETH STS: Green - Ethernet network status

• ETH 100: Red - 100 Mbit/s data rate

• CARD ERR: Red - Memory card fault

• SER COM: Yellow - Modbus serial activity

These LEDs enable quick on-site troubleshooting. Operators can identify problems without programming software. The Ethernet LEDs show network speed and activity. The serial COM LED flashes during Modbus communication.

Installation Guidelines

Mount the BMXP342020 in the first slot of an M340 rack. The processor draws power internally from the rack backplane. Insert the memory card before power-up if used. Connect the Ethernet cable to the RJ45 port for networking.

Key Installation Points for the BMXP342020:

• Rack Slot: CPU slot only (leftmost position)

• Power Supply: Use BMXCPS compatible power supply

• Memory Card: BMXRMS008MP included and installed

• USB: Use standard mini B cable for programming

• Grounding: Connect rack ground to panel ground

The BMXP342020 supports up to 4 racks in a multi-rack configuration. Use the appropriate rack extension cables. Configure the rack numbers in Control Expert software. All racks must have their own power supplies.

Package Contents

Your purchase of the BMXP342020 includes:

• (1) Schneider Electric Modicon M340 Processor – BMXP342020

• (1) BMXRMS008MP memory card (supplied with module)

• (1) Standard anti-static packaging

Frequently Asked Questions (FAQ)

Q: What is the maximum number of I/O points for the BMXP342020?
A: The BMXP342020 handles 1024 discrete and 256 analog I/O points. This applies to multi-rack configurations with 4 racks total.

Q: Does the BMXP342020 include a memory card?
A: Yes, the BMXP342020 comes with a BMXRMS008MP memory card. This card backs up programs and activates the web server.

Q: What programming software works with the BMXP342020?
A: The BMXP342020 programs with EcoStruxure Control Expert. Unity Pro and Modicon M340 specific software also work.

Q: Can the BMXP342020 be used in marine applications?
A: Yes, the BMXP342020 holds IACS E10 merchant navy certification. This qualifies it for shipboard automation systems.

Q: How fast is the BMXP342020 for Boolean logic?
A: The BMXP342020 executes Boolean instructions in 0.12 microseconds. Pure Boolean logic runs at 8.1 Kinstructions per ms.