ICP DAS Machine to Machine Communication

The GW-7472 (EtherNet/IP adapter to Modbus RTU Master Gateway) is helpful for data-exchanging between the Modbus RTU network and the EtherNet/IP network. It reads the register data from the Modbus RTU slaves and publishes these data to the input register data of the EtherNet/IP scanner. The output data transmitted by the EtherNet/IP scanner are updated to the register data of Modbus RTU slaves via the GW-7472. In order to save the installation space, the GW-7472 is offered in an amazing tiny form-factor that makes it easy to install in anywhere, even directly attached to a serial device or embedded into a machine. The GW-7472 features a powerful 32-bit MCU to handle efficient network traffic and it provides the IEEE 802.3af-compliant (classification, Class 1) Power over Ethernet (PoE) with a standard category 5 Ethernet cable. Through the NS-205PSE, Poe switch, the GW-7472 can be powered via the Ethernet cable. When there is no PoE switch on site, the GW-7472 provide another way to be powered from DC adapters. These two power interfaces are redundant. If one fails, another will take it over to supply the proper power to the GW-7472.

Applications

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

Features

General Features:

• Powerful 32-bit MCU handles efficient network traffic
• 10/100 Base-TX Ethernet, RJ-45 x1
• (Auto-negotiating, auto MDI/MDIX, LED Indicators)
• Redundant power inputs: PoE (IEEE 802.3af, Class 1) and DC jack
• Automatically RS-485 direction control
• Support ARP,TCP, UDP, ICMP, DHCP, BOOTP and TFTP protocols
• Easy firmware update via Ethernet
• Removable terminal block connector
• Tiny form-factor and low power consumption
• RoHS compliant with Halogen-free
• Fire retardant materials (UL94-V0 Level)

EtherNet/IP Features:

• Ethernet Protocol: EtherNet/IP adapter
• Maximum number of connections for Explicit Messages: 6
• Maximum number of connections for Implicit Messages: 1
• Supported I/O connection methods:
  • Transport and trigger: Exclusive-Owner, Cyclic
  • Original to Target Type: POINT2POINT
  • Target to Original Type: POINT2POINT, MULTICAST
• Device Configuration Option: EDS, Utility tool
• Address Configuration: DHCP, Utility tool
• EtherNet/IP Input/Output command data size: maximum 500 bytes
• The numbers of the Modbus RTU slave input registers mapping to the input registers of the EtherNet/IP adapter of the GW-7472: maximum 500 bytes
• The numbers of the Modbus RTU slave output registers mapping to the output registers of the EtherNet/IP adapter of the GW-7472: maximum 500 bytes

Modbus Features:

• Modbus Protocol: Modbus RTU Master
• Maximum support 30 Modbus RTU commands
• Supported Modbus RTU Function Codes:
  • 01 hex: Read Output Status
  • 02 hex: Read Input Status
  • 03 hex: Read Multiple Data Registers
  • 04 hex: Read Input Registers
  • 0F hex: Write Multiple Bits
  • 10 hex: Write Multiple Data Register
• Maximum data size of one Modbus RTU command: 240 bytes

Data Interchange Between Ethernet/IP and Modbus RTU

The GW-7472 is an EtherNet/IP Server with all the required EtherNet/IP objects. This section describes the EtherNet/IP Object Model and how to read/write the object data using EtherNet/IP Explicit and I/O messaging.

Utility

We provide GW-7472 Utility tools for Windows 2K/XP/Vista and Win 7, it includes:

• Network parameters configuration
• UART parameters configuration
• Modbus RTU devices configuration
• Auto search GW-7472 device
• Easy test to transmit/receive EtherNet/IP data