ENTES EMG02, EMG10, EMG12 User manual

EMG Ethernet Modbus Gateway User Manual

Rev 2.2

07/2010

1. Introduction

1.1. General Features

1.2 Installing the Drivers

2. Configuration

2.1 Main Device Parameters

2.1.1 RS485 Serial Communication Parameters

2.1.1.1 Baud Rate

2.1.1.2 Data Bit

2.1.1.3 Stop Bit

2.1.1.4 Parity Bit

2.1.1.5 Time-Out

2.1.1.6 Delay

2.1.2 Network Parameters

2.1.2.1 Connection Settings

2.1.2.2 DHCP

2.1.2.3 WEB Access

2.1.2.4 WEB Port

2.1.2.5 Log-in Timeout

2.1.2.6 Server IP

2.1.2.7 IP Address

2.1.2.8 Subnet Mask

2.1.2.9 Default Gateway

2.1.2.10 MODBUS/TCP Port

2.1.2.11 Link

2.1.3 Operating Modes (MODBUS/TCP /Tunnel Mode)

2.1.3.1 MODBUS/TCP Packet Structure

2.1.3.2 Tunnel Mode Packet Structure

2.1.4 Configuration example for communicating over ADSL modem

2.1 Reading/Changing the Configuration using the USB interface

2.2 Security settings

2.3 Reading/Changing the Configuration using the WEB interface

3. Firmware Updates

4. Appendices

Appendix A Differences between EMG model devices

Appendix B Query Interval and TCP Time-Out

1.Introduction

1.1 General Features

ENTES EMG family series MODBUS Gateway is a MODBUS/TCP protocol converter

that lets the users control their devices remotely through serial connection via the RS-485

protocol using TCP/IP protocol over the existing internet/intranet infrastructure. While it

is possible to monitor from one place with EMG-10, it is possible to monitor from 4

different places with EMG-02 and EMG-12.

Technical Data :

Table 1. EMG Series Technical Data

Category Description

Network Protocols TCP/IP, ARP, ICMP, HTTP, ModbusTCP

Serial Ports RS485 for Communication, USB Port for Configuration

Operating Modes ModbusTCP/RTU and Modbus Tunnel

Network Interface 10/100 Mbps auto-negotiation

Serial Communication

Formats

Serial Interface 300-115200 bps

Power Supply 9-24V AC - 9-30V DC or from USB port(~75 mA)

Insulation and Protection

Data Bits : 5-6-7-8 data bit Stop Bit: 1-1.5-2 characters Parity: Even-Odd-None

RS485 port: 500V Ethernet port: 1500V 15KV ESD protection on USB port 10/1000 us (600W) transient pulse protection on RS485 port

1.2 Installing the drivers

Since the EMG series devices communicate through the computer USB port, the drivers

which come with the bundled CD must be installed to the computer before using the

device.

To install the drivers;

1. Connect the EMG series device to the computers through the USB port of

computer. The POWER LED on the device should turn on and the computer will

recognize the device automatically.

2. To locate the driver files manually, select “Install from a list or specific location”

option and click on “Next”.

3. On the next window, specify the location of the drivers and click on “Next”.

4. Click on “Continue” on the next window

5. The system will copy the necessary files to the computer.

6. Copying progress is finished and the EMG Series device is now ready to use.

7. After the installation is completed, the device can be seen using these steps:

My Computer → Control Panel → System → Device Manager → Universal

Serial Bus Controller

2. Configuration

2.1 Main Device Parameters

In order for the device to function properly, both the RS-485 serial communication parameters

and the network parameters have to be configured correctly. Incorrect or incomplete

configuration of these parameters can degrade the system performance and even disrupt the

existing network infrastructure.

Network Settings Serial Port Settings

Connection

Setting

Server Baud Rate 9600

DHCP Off Data Bit 8

WEB Access Off Stop Bit 1

Log-in Timeout 120000 ms Parity None

Link Auto Timeout 2000 ms

IP Address 192.168.2 240 Delay 50 ms

Gateway Address 192.168.2.1

Subnet Mask 255.255.255.0

Port 502

Operating Mode

MODBUS/TC

Table 2. EMG Factory Default Values

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