GW-7434D

Introduction

The GW-7434D is an economic solution that provides a communication protocol transformation between the DeviceNet protocol and the Modbus TCP protocol. This module solves the problem to connect an existing DeviceNet network to the Ethernet-based PLC, HMI or SCADA for setting up a control or monitoring system. Different to the GW-7243D, the GW-7434D offers the Predefined Master connection Set function and Group 2 only Server function as a DeviceNet master, and enables accessing the DeviceNet slaves automatically and cyclically. If the PLC, HMI or SCADA would like to access the DeviceNet slaves and simultaneously communicate with the Modbus slaves or COM-based devices connected with the RS-232 or RS-485 port of the GW-7434D, the GW-7434D can be the Modbus TCP server or VxComm server to exchange the data with those devices.

Features

• 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 Modbus/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
• Supports Modbus RTU to DeviceNet master, setting by Utility

Applications:

• Control Systems
• Building Automation
• Factory Automation
• Districuted Data Acquisition

Typical Applications

Application 1: Modbus TCP/RTU slave to DeviceNet master gateway

The GW-7434D can act as a Modbus TCP/RTU slave to DeviceNet master gateway. Using the module, users don’t need to take care of the detail of the DeviceNet protocol. The module will implement the DeviceNet protocol automatically. It mainly supports the Predefined Master/Slave Connection Set functions to allow users to merge I/O data into DeviceNet network by using Modbus TCP/RTU commands.

Application 2: a single Modbus/TCP to multi-Mosbus/RTU converter

GW-7434D can be a single Modbus/TCP to multi-Modbus/RTU converter. You can simple use the Utility software to configure the device and then set connection between SCADA, HMI software and the GW-7434D.

Application 3: protocol converter with VxComm technique

GW-7434D can also be able to link to serial devices that don’t support Modbus/RTU. To use this function, you will need to install VxComm driver on host PCs. After installation, you will be able to access the remote COM ports via the standard serial driver.