Introduction:

Modbus has become a de facto standard industrial communication protocol, and is now the most commonly available means of connecting industrial electronic devices. Modbus allows for communication between many devices connected to the same RS-422/485 network, for example, a system that measures temperature and humidity and communicates the results to a computer. Modbus is often used to connect a supervisory computer with a remote terminal unit (RTU) in supervisory control and data acquisition (SCADA) systems.



The tGW-715i module is a Modbus TCP to RTU/ASCII gateway that enables a Modbus/TCP host to communicate with serial Modbus RTU/ASCII devices through an Ethernet network, and eliminates the cable length limitation of legacy serial communication devices. The module can be used to create a pair-connection application (as well as serial-bridge or serial-tunnel application), and can then route data over TCP/IP between two serial Modbus RTU/ASCII devices, which is useful when connecting mainframe computers, servers or other serial devices that use Modbus RTU/ASCII protocols and themselves do not have Ethernet capability.

The tGW-715i also adds 2500 VDC isolation and +/-4 kV ESD protection component that diverts the potentially damaging charge away from sensitive circuit to protects the module and equipment from the sudden and momentary electric current.




“Built-in Web server”
The tGW-700 module features a powerful 32-bit MCU to enable efficient handling of network traffic, and also has a built-in web server that provides an intuitive web management interface that allows users to modify the configuration of the module, including the DHCP/Static IP, the gateway/mask settings and the serial port settings.


“Built-in Dual Watchdog”
The module contains a dual watchdog, including a CPU watchdog (for hardware functions) and a host watchdog (for software functions). The CPU watchdog automatically resets the CPU if the built-in firmware is operating abnormally, while the host watchdog automatically resets the CPU if there is no communication between the module and the host (PC or PLC) for a predefined period of time (system timeout). The dual watchdog is an important feature that ensures the module operates continuously, even in harsh environments.


“Low power consumption”
The tGW-700 module offers true IEEE 802.3af-compliant (classification, Class 1) Power over Ethernet (PoE) functionality by using a standard category 5 Ethernet cable to receive power from a PoE switch such as NS-205PSE. If there is no PoE switch on site, the module will also accept power input from a DC adapter. The tGW-700 module is designed for ultra-low power consumption, reducing hidden costs from increasing fuel and electricity prices, especially when you have a large number of modules installed. Reducing the amount of electricity consumed by choosing energy-efficient equipment can have a positive impact on maintaining a green environment.


 

Features:
	Supports Modbus TCP/UDP master and slave Supports Modbus RTU/ASCII master and slave 10/100 Base-TX Ethernet, RJ-45 x 1 (Auto-negotiating, auto MDI/MDIX, LED Indicators) Contains a 32-bit MCU that efficiently handles network traffic
	eSearch Utility for 32/ 64-bit Microsoft Windows XP/2003/2008/Vista/7/8
	Watchdog Timer Suitable for Use in Harsh Environments 2500 VDC Isolation and +/-4 kV ESD protection
	Allows automatic RS-485 direction control Max. 32 connections (masters) per serial port Read-cache ensures faster Modbus TCP/UDP response Supports UDP responder for device discovery (UDP Search) Static IP or DHCP network configuration Easy firmware update via the Ethernet (BOOTP, TFTP) Tiny Web server for configuration (HTTP) Includes redundant power inputs: PoE (IEEE 802.3af, Class 1) and DC jack Tiny form-factor and low power consumption Cost-effective Modbus Gateway
	RoHS compliant & no Halogen ODM Service Is Available

For more information, please visit the tGW-715i web site.