Schneider Modicon M340 Medium PAC/PLC Selection and Specifications

Product positioning and core features

1. Positioning

Medium sized modular PAC/PLC, targeting mid to high end scenarios such as equipment automation, production lines, infrastructure, water treatment, oil and gas, metallurgy, and building HVAC.

2. Five core advantages

Compact: small size, single slot occupancy, native integrated communication

Flexible: Multi rack expansion, hot swappable I/O, SD card backup/upgrade

Scalable: Supports up to 4 racks, 63 slots, high-density I/O

Durable: 30g anti vibration, far exceeding the standard anti-interference, wide temperature/anti-corrosion version

Sustainable: Green Premium, shared X80 module reduces spare parts costs

3. Platform compatibility

Shared Modicon X80 rack, power supply, I/O modules (compatible with M580)

Support Modicon STB distributed I/O

Unified programming software: EcoStruxure Control Expert (formerly Unity Pro)

Processor model (core)

There are a total of 5 processors, divided into standard and performance types:

BMXP341000 (Standard)

Maximum 2 racks, 512 DI/DO points, 128 AI/AO points, 20 dedicated channels

BMXP342000 (Performance)

Maximum 4 racks, 1024 DI/DO, 256 AI/AO, 36 dedicated channels

BMXP3420102 (Performance+CANopen)

Built in CANopen master station, suitable for multi axis/servo devices

BMXP342020 (Performance+Ethernet)

Built in Modbus/TCP, suitable for networked distributed systems

BMXP3420302 (Performance+Ethernet+CANopen)

Top configuration, dual bus full functionality

key parameters

Execution speed: 4.2-8.1 K instructions/ms

Memory: Standard 2MB, Performance 4MB

Built in interfaces: USB, serial port, some with Ethernet/CANopen

SD card: Program backup, web server, data storage (8MB/128MB)

Hardware system (X80 modular)

1. Rack (Backpanel)

Slot: 4/6/8/12/16 slots

Type: X-bus single bus, dual bus (X+Ethernet)

Expansion: Up to 4 racks, X-bus cable up to 30m in length

2. Power module

Power supply: AC100~240V/DC24V/48V/125V

Power: 17W~40W

Optional redundant power supply, suitable for high reliability scenarios

3. I/O module (full coverage)

Digital quantity: 8/16/32/64 points, AC/DC/relay

Analog quantity: 4/8 channels, voltage/current/thermistor/thermocouple HART

Specialized module:

High speed counting (2/8 channels)

Motion control (PTO pulse output)

Timestamp (1ms accuracy)

Weighing and SSI encoder

Communication system (strongest majority)

1. Native port

USB: Programming/Debugging

Serial port: Modbus RTU/ASCII, RS232/485

Ethernet: Modbus/TCP, Web Server SNMP、FTP

CANopen: Drive servo, frequency converter, soft starter

2. Expand communication module

Ethernet: Modbus/TCP, EtherNet/IP, dual port

RTU remote: DNP3, IEC60870-5-101/104 (water conservancy/power grid)

Fieldbus: PROFIBUS DP, AS Interface

Fiber optic: long-distance, anti-interference

Advanced: OPC UA, IEC61850 (Power)

3. Industrial Ethernet function

I/O Scanning: Remote I/O Automatic Scanning

FDR: Fast device replacement, no configuration replacement required

NTP: Time synchronization, accuracy 5ms

Global Data: Real time data sharing between PLCs

Web server: remote diagnosis, variable monitoring, alarm page

Email alerts, data logs (CSV stored on SD card)

System architecture (4 types of standard solutions)

Local I/O architecture

Centralized control cabinet, single rack/multi rack expansion, suitable for equipment control

Fieldbus architecture

Local I/O+CANopen/Modbus/Profibus distributed devices

Ethernet distributed architecture

Ethernet with distributed I/O (STB), frequency converter, instrument

Enterprise level architecture

Connect SCADA, MES, cloud platform, EtherNet/IP+Modbus/TCP dual network

Harsh environment version (H/C/T type)

1. Strengthen features

Temperature: -25 ℃~+70 ℃

Protection: Three proof coating (moisture-proof, anti salt spray, anti-corrosion)

Certification

IEC 60721-3-3 3C1~3C4

ISA G1~G4

Suitable for salt spray, sulfurization gas, and high humidity environments

Applicable: offshore platforms, metallurgy, chemical industry, mining, coastal areas

2. Model identification

H: Enhanced type

C: Coating anti-corrosion type

T: Wide temperature type

Security and Certification

1. Functional safety

Supports IEC 61508, IEC 61511, ISO 13849-1

Can construct a safety circuit and achieve SIL2/PLd in conjunction with safety modules

2. International certification

Conventional: CE, UL, CSA, RCM, EAC, UKCA

Explosion proof: ATEX Zone 2/22, IECEx, Class I Div 2

Maritime: ABS, BV, DNV, LR, RINA, CCS

Rail transit: EN 50155, EN 45545

3. Electromagnetic compatibility

Static electricity: 6kV contact, 8kV air

Radiation field: 15V/m

Vibration: 3g, impact: 30g (far exceeding industry standards)

Software and Engineering Tools

Programming software: EcoStruxure Control Expert (LD, FBD, SFC, ST, IL)

Web UI: Browser directly diagnoses, monitors, and modifies variables

Web Designer: Customize HMI pages, alarms, curves

Digital twin: offline simulation, pre debugging

SD card: One click backup/restore, firmware upgrade

Typical applications

Equipment automation: packaging machines, machine tools, textiles, printing

Process control: water treatment, HVAC, air conditioning systems

Infrastructure: electricity, oil and gas, mining, metallurgy

Remote monitoring: RTU, DNP3/IEC104, water conservancy, pipeline network

Multi axis motion: servo system controlled by CANopen