Modbus TCP server/DeviceNet Master Gateway

GW-7434D ~ NEW ~ Modbus TCP server/DeviceNet Master Gateway

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“Embedded Internet” and “Embedded Ethernet” are hot topics today. Nowadays the Ethernet protocol becomes the de-facto standard for local area network. Via Internet, connectivity is occurring everywhere, from home appliances to vending machines to testing equipment to UPS…etc. Using Ethernet for network in industrial area is appealing because the required cabling is already installed. The GW-7434D from ICP DAS is a solution that provides a communication protocol transfer the DeviceNet and Modbus/TCP protocol and solves a mission-critical problem: connecting an existing DeviceNet network to Ethernet-base PLCs and PC-based configuration and monitor system. it enables DeviceNet networks to be coupled together over the Internet/Ethernet, whereby remote monitoring and control is possible.

The GW-7434D can be a DeviceNet master device in the CAN bus on the DeviceNet network. It is a “Predefined Master connection Set”, and supports Group 2 only Server functions to communication with slave devices. In addition, we also provide Utility software for users to configure their device parameters for the GW-7434D. The following figure shows the application architecture for the GW-7434D.


  • Control System
  •  Building Automation
  •  Factory Automation
  •  Distributed data acquisition

    Programmable DeviceNet Master MAC ID
    Programmable DeviceNet transfer-rate 125K, 250K, 500K
    Supports maximum DeviceNet devices up to 63
    Predefined Master/Slave Connection Set
    Devicenet I/O Length: 128 bytes max. (Input/Output) per DeviceNet slave
    Total DeviceNet I/O Length: 1280 bytes max. (Input/Output) for all DeviceNet slaves
    Supports I/O Operation Mode: Poll, Bit-Strobe and Change Of State/Cyclic
    Supports maximum 512 bytes Modbus I/O datas for DeviceNet I/O to map
    Supports on-line adding device into and removing device from network
    Converters single Mobbus/TCP to multi Modbus/RTU, setting by Utility
    Supports VxComm technique for every COM ports of controllers, setting by Utility
    Allowed multi-client (or master) access simultaneously
    Support "Set/Get Explicit Message" methods via Modbus TCP/RTU command
    Supports Modbus RTU to DeviceNet master, setting by Utility


The GW-7434D provides centralized data storage, “Internal Memory”, for data that is shared between the DeviceNet and Modbus/TCP network. Data is placed into the “Internal Memory” by one network interface, allowing the data to be read/wrote through the other network interface.


  • We provide GW-7434D Utility tools for Windows 98/SE/2K/XP, it includes:
  • Online add/remove DeviceNet devices via Ethernet
  • Online monitor and configure devices status via Ethernet
  • Get/Set Modbus/TCP input/output memory address
  • Support DeviceNet I/O mapping table
  • Show DeviceNet devices connection status
  • Support communication mode setting

    16 KB; Data retention: 40 years; 1,000,000 erase/write cycles
    Watchdog IC
    CAN Interface
    NXP SJA1000T with 16 MHz clock
    NXP 82C250
    5-pin screwed terminal block (CAN_L, CAN_H, N/A for others)
    1000 VDC for DC-to-DC, 2500 Vrms for photo-couple
    DeviceNet Volumn I ver2.0, Volumn II ver2.0
    UART Interface
    COM 1
    COM 1 Connector
    5-pin screwed terminal block (TxD, RxD, RTS, CTS, GND )
    COM 2
    RS-485 (Self-turner inside)
    COM 2 Connector
    2-pin screwed terminal block (DATA+, DATA-)
    Ethernet Interface
    10/100Base-TX Ethernet Controller (Auto-negotiating, Auto_MDIX)
    RJ-45 with LED indicator
    Modbus TCP
    Power supply
    Unregulated +10 ~ +30 VDC
    Power reverse polarity protection, Over-voltage brown-out protection
    Power Consumption
    2.5 W
    72mm x 122mm x 33mm (W x L x H)
    Operating Temp.
    -25 ~ 75 ℃
    Storage Temp.
    -30 ~ 80 ℃
    10 ~ 90% RH, non-condensing
    Ordering Information:
    Modbus/TCP server to DeviceNet master Gateway
    GW-7434D-G CR
    Modbus/TCP server to DeviceNet master Gateway (RoHS)

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