LW Series Industrial Bus Gateways | PROFINET/EtherCAT/ModbusTCP RS485 Gateways

High-performance LW Series industrial bus gateways for RS485 to PROFINET/EtherCAT/ModbusTCP protocol conversion. 3/6/12 channel options with 2500V isolation, CE certified for industrial automation applications.

LW-PN-4MB3 PROFINET Gateway - 3 Channel RS485 to PROFINET

LW-PN-4MB3 PROFINET Gateway

3 Channels

3-channel RS485-to-PROFINET industrial gateway, enabling seamless Modbus RTU to PROFINET protocol conversion for Siemens PLC integration and industrial automation systems.

  • 3 independent RS485 channels with 2500V isolation
  • Supports 64 Modbus commands (01H-10H function codes)
  • PROFINET RT protocol support, Class C compliance
LW-PN-4MB6 PROFINET Gateway - 6 Channel RS485 to PROFINET

LW-PN-4MB6 PROFINET Gateway

6 Channels

6-channel RS485-to-PROFINET industrial gateway, ideal for large-scale industrial automation systems with multiple Modbus RTU devices and PROFINET master integration.

  • 6 independent RS485 channels with 2500V isolation
  • Supports 64 Modbus commands (01H-10H function codes)
  • PROFINET RT protocol support, Class C compliance
LW-PN-4MB12 PROFINET Gateway - 12 Channel RS485 to PROFINET

LW-PN-4MB12 PROFINET Gateway

12 Channels

12-channel RS485-to-PROFINET industrial gateway, designed for high-density Modbus RTU device networking in industrial automation environments.

  • 12 independent RS485 channels with 2500V isolation
  • Supports 64 Modbus commands (01H-10H function codes)
  • PROFINET RT protocol support, Class C compliance

⚙️Technical Specifications | LW Series Industrial Bus Gateways

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Parameter4MB3 Industrial Gateway4MB6 Industrial Gateway4MB12 Industrial Gateway
Number of Independent RS485 Channels 3 Channels 6 Channels 12 Channels
Modbus Command Support 64 commands, supporting function codes: 01H, 02H, 03H, 04H, 05H, 06H, 0FH, 10H
Operating Power Supply DC 24V (12-30V) - Industrial Grade Power Input
Power Consumption ≤3W ≤4W ≤6W

📖User Guide | LW Series Industrial Bus Gateway Installation & Configuration

1

Hardware Installation for Industrial Bus Gateway

Mount the LW Series industrial bus gateway on a standard 35mm DIN rail, ensuring secure installation to avoid vibration impact. Install away from strong electromagnetic interference sources such as inverters and motors.

ℹ️ Maintain operating temperature between -10℃~70℃; avoid direct sunlight and water exposure for industrial gateway longevity.
2

Power Connection for LW Series Gateway

Power the industrial gateway with DC 24V (supports 12-30V range). Ensure correct polarity connection—reverse polarity may damage the device.

  • Brown Wire: DC+ (24V)
  • Blue Wire: DC- (0V)
  • Yellow-Green Wire: Ground (Optional, Recommended for Anti-Interference)
3

Network Connection for Industrial Bus Gateway

Connect the gateway's Ethernet port to an industrial switch or PLC using an Ethernet cable. For PROFINET series, shielded industrial Ethernet cables are recommended for stable communication.

PROFINET Series Gateway

2 RJ45 Ethernet ports, supports daisy chain connection (no extra switch needed)

EtherCAT Series Gateway

2 RJ45 Ethernet ports, supports In/Out cascading for real-time control

ModbusTCP Series Gateway

2 RJ45 Ethernet ports, supports network expansion for SCADA integration

4

RS485 Device Connection to Industrial Gateway

Connect Modbus RTU devices to the gateway's RS485 interfaces. Each channel can connect one or multiple Modbus slave devices (ensure unique addresses for reliable communication).

  • A+: Connect to device's A/+ terminal
  • B-: Connect to device's B/- terminal
  • GND: Connect to device's ground (recommended for better anti-interference)

📍Application Scenarios | LW Series Industrial Bus Gateways

PROFINET Series Industrial Gateway Applications

  • Integration with Siemens S7-200SMART/S7-1200/S7-1500 PLCs for industrial automation
  • Connection to PROFINET masters (Bosch Rexroth, Phoenix Contact, etc.) in manufacturing systems
  • System integration with CODESYS, KUKA/ABB robots for smart factory automation

⭐Product Features | LW Series Industrial Bus Gateways

PROFINET Series Industrial Gateway Features

  • ✓
    Based on Renesas PROFINET dedicated chip (non-software protocol implementation for stability)
  • ✓
    Supports "substitute value output" when CPU is in STOP state (industrial safety compliance)
  • ✓
    Easy configuration via GSDML file (compatible with mainstream PROFINET masters)

Common Features of LW Series Industrial Gateways

  • ✓
    Independent configuration for each RS485 channel (no parameter interference for multi-device systems)
  • ✓
    2500V electrical isolation for strong anti-interference in industrial environments
  • ✓
    35mm standard DIN rail mounting (suitable for industrial control cabinet installation)

 

Get In Touch

For sales inquiries, technical support, quotes, or any questions – our team is ready to assist

  • +86 023-62603500 (Office Line)
  • +86 199 2382 9040 (Mobile/WhatsApp)
  • foreigntrade@cqlwsys.com
  • Mon-Fri: 8:30 - 17:30 (GMT+8)

Emergency Support

For critical equipment issues outside business hours:

+86 199 2382 9040 (Priority WhatsApp)

Communication Support

English, Chinese, Spanish (available upon request)

Quick Resources

FAQ for Industrial Control Systems

Product Manuals & Downloads

Our Location

Visit our facility or check our location on the map

  • Block E, China Zhigu
    No.8, YuMa Road, Nanan District
    Chongqing, China
  • Visitor Info: Please confirm your visit 24hrs in advance for security registration
  • Nearest Airport: Chongqing Jiangbei International Airport (CKG) – 45min drive

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