Bộ chuyển đổi Modbus Gateway 3 cổng RS-485 sang Ethernet ICP DAS tGW-735 CR

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Tiny Modbus/TCP to RTU/ASCII Gateway with PoE and 3-port RS-485

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Bộ chuyển đổi Modbus Gateway 3 cổng RS-485 sang Ethernet ICP DAS tGW-735 CR

Feature

  • Supports Modbus TCP/UDP master and slave
  • Supports Modbus RTU/ASCII master and slave
  • Max. TCP connections (masters) per serial port: 32
  • Read-cache ensures faster Modbus TCP/UDP response
  • Supports UDP responder for device discovery (UDP Search)
  • Static IP or DHCP network configuration
  • Tiny Web server for configuration (HTTP)
  • Terminal block connector for easy wiring
  • Cost-effective Modbus gateway

Introduction

Modbus has become a 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-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-700 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 do not themselves have Ethernet capability.

The read-cache function is used to store previous requests and responses in the memory buffer of the tGW-700 module.  When other HMI/SCADA master controllers send the same requests to the same RTU slave device, the cached response is returned immediately. This feature dramatically reduces the loading on the RS-485 bus communication, ensures faster TCP responses, and improves the stability of the entire system.

The tGW-700(Non-T) module offers true IEEE 802.3af-compliant (classification, Class 1) Power over Ethernet (PoE) functionality using a standard category 5 Ethernet cable to receive power from a PoE switch such as the 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.

Application

• Building Automation
• Factory Automation
• Machine Automation
• Remote Maintenance
• Remote Diagnosis
• Testing Equipment

Specifications

CPU Module
CPU 32-bit ARM
COM Ports
Ports 3 x RS-485
Baud Rate 115200 bps Max.
Bias Resistor Yes, 1 KΩ
Parity None, Odd, Even, Mark, Space
Data Bit 5, 6, 7, 8
Stop Bit 1, 2
Node Address 254 (max.)
Ethernet
Ports 10/100 Base-TX, 8-pin RJ-45 x 1, (Auto-negotiating, Auto-MDI/MDIX, LED indicator)
PoE (IEEE 802.3af, Class 1)
Power
Consumption 0.07 A @ 24 VDC
Powered from PoE IEEE 802.3af, Class 1
Powered from Terminal Block +12 ~ 48 VDC
Mechanical
Casing Plastic
Dimensions (mm) 52 mm x 95 mm x 27 mm (W x H x D)
Installation DIN-Rail Mounting
Environment
Operating Temperature -25 ~ +75 °C
Storage Temperature -30 ~ +80 °C
Humidity 10 ~ 90% RH, non-condensing

Download

Datasheet

Documents

Ordering Information

tGW-735     CR  Tiny Modbus/TCP to RTU/ASCII Gateway with PoE and 3-port RS-485 (RoHS)
Includes DC-jack to 2-wire power cable, 0.3 M

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