Product Overview: Schneider Electric BMXP3420302

The BMXP3420302 provides integrated motion control for machine builders. This processor module adds a CANopen master bus to standard M340 features. It controls up to 63 servo drives and devices on one network. The BMXP3420302 supports both Transparent Ready and CANopen concepts. This makes it ideal for coordinated machine automation.

Technical Specifications

The BMXP3420302 has 4096 kB of internal RAM total. Program and constants storage uses 3584 kB of this space. Data memory provides 256 kB for variables and tags. The supplied BMXRMS008MP memory card 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 BMXP3420302 offers the same fast execution as the standard M340. Boolean instructions execute in 0.12 microseconds. Single-length word operations take 0.25 microseconds. Floating point math requires 1.16 microseconds. Mixed logic runs at 6.4 Kinstructions per ms.

CANopen Motion Control Features

The BMXP3420302 includes a dedicated CANopen master bus. The port uses a SUB-D 9 connector with two twisted shielded pairs. Data rates range from 20 kbit/s to 1 Mbit/s. This supports various cable lengths and device requirements.

• CANopen Protocol: DS 301 V4.02, DS 303-2, DS 405 compliant

• Maximum Servers: 63 CANopen devices

• Independent Axes: Motion control for servo drives

• Bus Access: CSMA/CA with daisy-chain or tap junctions

• PDO: Process Data Object for real-time data

• SDO: Service Data Object for configuration

The BMXP3420302 supports all standard CANopen services. Network management (NMT) controls device states. Process Data Objects handle real-time I/O data. Service Data Objects manage device configuration. Special functions include SYNC, EMCY, and TIME messages.

CANopen Cable Length Guidelines

The BMXP3420302 supports multiple baud rates with specific lengths. Higher speeds require shorter cable distances. Lower speeds allow longer network runs. Use the appropriate cable type for each installation.

CANopen Data Rates for the BMXP3420302:

• 1 Mbit/s: 20 meters maximum (0.6 meter tap length)

• 800 kbit/s: 40 meters maximum (6 meter tap length)

• 500 kbit/s: 100 meters maximum (10 meter tap length)

• 250 kbit/s: 250 meters maximum (10 meter tap length)

• 125 kbit/s: 500 meters maximum (10 meter tap length)

• 50 kbit/s: 1000 meters maximum (120 meter tap length)

• 20 kbit/s: 2500 meters maximum (300 meter tap length)

The BMXP3420302 supports up to 64 devices per segment at 160 meters. At 185 meters, the maximum is 32 devices. At 205 meters, only 16 devices are permitted. Always terminate both ends of the CANopen network properly.

I/O Configuration Options

The BMXP3420302 supports single and multi-rack configurations. Single-rack mode handles 704 discrete I/O points and 66 analog 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

• Communication Modules: 2 Ethernet modules maximum

• AS-Interface Modules: 4 modules maximum

The BMXP3420302 works with the full Modicon M340 I/O catalog. This includes digital, analog, and specialty modules. The processor also supports programmable control loops. Users can configure up to 36 application specific channels.

Communication Interfaces

The BMXP3420302 features multiple integrated communication ports. One Ethernet TCP/IP RJ45 port runs at 10/100 Mbit/s. One CANopen master bus uses a SUB-D 9 connector. A USB port provides 12 Mbit/s programming access.

Integrated Ports on the BMXP3420302:

• Ethernet: 10BASE-T/100BASE-TX RJ45

• CANopen: SUB-D 9 master bus

• USB: Type mini B for programming

• Protocols: Modbus TCP, CANopen, Ethernet/IP

• Web Server: Standard with memory card

The BMXP3420302 includes Transparent Ready Ethernet services. Bandwidth management prevents network congestion. The Data Editor allows real-time value monitoring. Modbus TCP messaging connects to drives and HMIs. SNMP agent provides network management capabilities.

Embedded Ethernet Services

The BMXP3420302 offers a rich set of Ethernet features. Rack Viewer provides graphical system status. The web server is activated by the BMXRMS008MP memory card. Email notifications can be sent for alarm conditions. NTP time synchronization keeps all devices aligned.

• SNMP Agent: Network management and diagnostics

• Web Server: Class B10 with memory card

• DHCP/BootP: Automatic IP address assignment

• Modbus TCP: Client and server messaging

• Bandwidth Management: Prioritizes critical traffic

The Ethernet port includes activity and speed LEDs. A green ETH ACT LED shows network activity. A green ETH STS LED indicates network status. A red ETH 100 LED lights for 100 Mbit/s operation.

Application Structure

The BMXP3420302 uses a flexible multitasking architecture. It runs one cyclic periodic master task. A periodic fast task handles high-speed requirements. No auxiliary tasks are available 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 BMXP3420302 supports motion control within the application structure. CANopen PDOs can trigger event tasks directly. This enables fast response to encoder inputs and drive status. The processor coordinates I/O scanning with motion updates seamlessly.

Memory Organization

The BMXP3420302 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.

Environmental Specifications

The BMXP3420302 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 BMXP3420302 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.

Certifications

The BMXP3420302 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 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 BMXP3420302 has a lightweight design of only 0.215 kg. Package dimensions are 5.5 x 11.0 x 11.7 cm. This compact size saves valuable panel space. The processor is easy to install and replace.

Status LEDs

The BMXP3420302 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

• CAN RUN: Green - CANopen bus operational

• CAN ERR: Red - CANopen bus fault

• 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

These LEDs enable quick on-site troubleshooting. The CANopen LEDs show bus health clearly. Operators can identify network problems without software. The serial COM LED is not present on this model.

Installation Guidelines

Mount the BMXP3420302 in the first slot of an M340 rack. The processor draws 135 mA at 24V DC from the backplane. Insert the memory card before power-up if used. Connect the CANopen bus to the SUB-D 9 port.

Key Installation Points for the BMXP3420302:

• Rack Slot: CPU slot only (leftmost position)

• Power Supply: Use BMXCPS compatible power supply

• CANopen Termination: 120 ohm resistor at both ends

• CANopen Cable: Use dedicated shielded twisted pair

• Grounding: Connect CANopen shield to ground at one point

For CANopen networks, follow proper bus topology guidelines. Daisy-chain connections work better than star topologies. Keep the bus length within the specified limits for your baud rate. Use T-connectors for adding devices to the network.

Package Contents

Your purchase of the BMXP3420302 includes:

• (1) Schneider Electric Modicon M340 Processor – BMXP3420302

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

• (1) Standard anti-static packaging

Frequently Asked Questions (FAQ)

Q: How many CANopen devices can the BMXP3420302 control?
A: The BMXP3420302 supports up to 63 CANopen server devices. This includes drives, I/O blocks, and encoders on the same network.

Q: Does the BMXP3420302 include motion control functions?
A: Yes, the BMXP3420302 supports independent axis motion control. It coordinates servo drives via CANopen PDO and SDO services.

Q: What is the current consumption of the BMXP3420302?
A: The BMXP3420302 draws 135 mA at 24V DC. This is higher than the standard BMXP342020 which uses 95 mA.

Q: Can the BMXP3420302 be used for marine applications?
A: Yes, the BMXP3420302 holds IACS E10 merchant navy certification. This qualifies it for shipboard automation and control systems.

Q: What is the maximum CANopen cable length at 1 Mbit/s?
A: The BMXP3420302 supports 20 meters maximum at 1 Mbit/s. The tap junction length is limited to 0.6 meters at this speed.