Mega System Tech RS232, RS422, RS485 User Manual

NET101

RS232 / RS422 / RS485 to Ethernet Converter

User’s Manual

Version 1.2

Copyright Information

Copyright © 2004-2005, Mega System Technologies, Inc.

All rights reserved.

Reproduction without permission is prohibited.

Technical Support and Contact Information

Mega System Technologies, Inc.

Tel: [phone]

Fax: [phone]

Web: www.megatec.com.tw

Customer Service: [e-mail]

CONTENTS

Chapter 1: Introduction ________________________________________ 1

Section 1. Features___________________________________________ 1
Section 2. Networking with NET101______________________________ 2
Section 3. Package Contents ___________________________________ 3
Section 4. NET101 Description__________________________________ 3
Section 5. NET101 DB-9 Pin Assignment__________________________ 4
Section 6. NET101 Indicators___________________________________ 5

Chapter 2: Installation Procedure________________________________ 6
Chapter 3: Hardware Installation ________________________________ 7

Section 1. Installation Procedure ________________________________ 7

Chapter 4: Using Netility to Setup IP & Update Firmware________________ 9

Section 1. Installing Netility_____________________________________ 9
Section 2. Using Netility _______________________________________ 9

2.1 Network Selection_________________________________________ 9

2.2 Configure ______________________________________________ 10

2.2.1 IP Address____________________________________________ 10

2.2.2 Advanced ____________________________________________ 11

2.3 Upgrade Firmware _______________________________________ 11

2.4 About__________________________________________________ 12

2.5 Refresh ________________________________________________ 12

Chapter 5: Configure NET101 by WEB Browser ___________________ 13

Section 1. Introduction _______________________________________ 13
Section 2. NET101 Web Manager Interface_______________________ 13

2.1 Information _____________________________________________ 14

2.1.1 System Information_____________________________________ 14

2.1.2 Network Status ________________________________________ 14

2.2 Configuration____________________________________________ 14

2.2.1 Network______________________________________________ 15

2.2.2 WEB / Telnet__________________________________________ 18

2.2.3 System Time__________________________________________ 19

2.2.4 Connection ___________________________________________ 20

2.3 Help___________________________________________________ 21

2.3.1 About ________________________________________________ 21

Appendix A: Update NET101 Firmware __________________________ 23
Appendix B: NET101 Virtual COM Port __________________________ 26

i

Chapter 1: Introduction

Chapter 1: Introduction

Section 1. Features

NET101 is one of the smallest RS232/RS422/RS485 Ethernet Converter in the
market. This device provides the means to transfer serial data over the Internet
without having to make changes to your existing hardware/software. That is done by
connecting two NET101 in Master mode and Slave mode. Alternatively, a virtual
driver can be installed to control the facility over Internet.

The NET101 also could be used as a MODBUS gateway. It could convert transaction
between the MODBUS on Serial Bus and MODBUS on TCP/IP. Please refer to the
specification of MODBUS for detailed specification on MODBUS.

Some of the main features of this device are;

Firmware:

• Built-in Web Server

• Support RS232 / 422 /485 (Half/Full Duplex) physical bus

• Auto-detection of Ethernet bus type

• Support Virtual COM port drivers from Microsoft Windows platform

• Support One-on-One communication mode

• Support Virtual COM port mode

• Gateway between MODBUS Serial and MODBUS on Ethernet

• Configuration via telnet, Web or Netility (freeware)

• PPPoE and DDNS protocol for xDSL broadband connection

• Serial data transfer rate up to 115kbps (19.2kbps for continuous

transmit/receive).

• Connects serial device to 10/100Mbps Fast Ethernet Network Access

• Support any Web Browser for configuration

• Network Protocol: HTTP server, TCP/IP, UDP, SMTP, PPPoE, Dynamic DNS,

DNS Client, SNTP, BOOTP, DHCP, FTP Server, SNMP

Hardware:

• 32-Bit 50MHz RISC ARM7 TDMI CPU

• System clock: 25MHz or 50MHz

• Flash Memory: 512KB / 1MB / 2MB / 4MB / 8MB

• Dynamic Memory: 2MB / 8MB / 16MB

• LCD display shows the IP address, Subnet Mask and Gateway

• Power supply: 4.8V to 7.0V, 250mA maximum.

• Operating Voltage: 3.3 volts

• Operating Temperature: 0°C ~ 60°C

• Operating Humidity: 5% ~ 90%

• Dimensions: 48mm x 63mm x 21m

• Weight: 75g

• For Indoor Use. Protective housing required for outdoor use

NET101 User’s Manual -1-

Chapter 1: Introduction

Section 2. Networking with NET101

NET101 gives the user two options when it comes to Network connection. The user
may choose to manage and control the various serial devices over Internet using
windows Virtual COM port function (refer to Fig 1). In this configuration, a NET101 is
connected to a serial device. The user can then manage and control each of these
serial devices over LAN.

Fig.1 NET101 using a Virtual COM Port in Windows mode

To extend this further, the user may opt to have a One-on-One configuration (refer to
Fig. 2). One of these 2 NET101 needs to be configured in Master mode, and the other
is configured in Slave mode.

Fig.2 NET101 a One-on-One Communication Diagram

NET101 User’s Manual -2-

Section 3. Package Contents

A standard package should contain these items;

One NET101 module

One Utility CD which contains;

1. Netility: to configure IP address and update the firmware.

2. Time Server: Time adjustment utility.

3. Adobe Acrobat 5.0 Reader.

4. User Manual

One Power Adaptor (European / USA)

Chapter 1: Introduction

Section 4. NET101 Description

Fig.3 NET101 Front View

NET101 User’s Manual -3-

Section 5. NET101 DB-9 Pin Assignment

Fig.4 DB-9 Male

NET101 DB-9 PIN Assignment

Chapter 1: Introduction

DB-9 Pin No. RS-232 RS-422

1
2
3
4
5
6
7
8
9

DCD RxD- RxD-

RxD RxD+ RxD+

TxD TxD+ TxD+ TxD+ / RxD+
DTR TxD- TxD- TxD- / RxD­GND GND GND GND
DSR

RTS

CTS

RI

Fig.5 NET101 DB-9 PIN assignment

RS-485

Full Duplex

RS-485

Half-Duplex

NET101 User’s Manual -4-

Chapter 1: Introduction

Section 6. NET101 Indicators

NET101 LED Status Indicators

Color Signal Definition Condition / Description

Green Power state On: Normal power

Red Error Condition On: Error condition occurred

Orange Logon state On: When there is Master or Driver

logon and receive the image.

Yellow Data activity Flash when there is data

transmission / receive by DB-9.

Fig.6 NET101 Status LED Indicator

NET101 LAN Port LED Light indicators

Color Condition / Description

Green On: Internet correspond speed is 100M

Flash: Data transmitting / receiving

Yellow On: Internet correspond speed is 10M

Flash: Data transmitting / receiving

Fig.7 NET101 LAN LED Indicator

NET101 User’s Manual -5-

Chapter 2: Installation Procedure

(

)

Chapter 2: Installation Procedure

Before you start using NET101, you will need to set-up both the hardware and
software. The following is a flow chart on the installation procedure:

Connect the designated serial device, power

adaptor and Ethernet cable to NET101

(Chapter 3)

Install Netility supplied in the Utility CD.

Use Netility to setup the IP (for Static IP)

(Chapter 4)

Open a standard web browser, key in the IP

and go thru the configuration in

“NET101 Web Manager”

Chapter 5

Set-up completed

Fig.8 NET101 installation flowchart

NET101 User’s Manual -6-

Chapter 3: Hardware Installation

The following details the installation procedure for NET101.

Section 1. Installation Procedure

Step 1:
Connect the DB-9 to

either a RS232 / 422 or
485 serial port of the
device.

Chapter 3: NET101

Step 2:
Connect one end of the

Ethernet cable to a hub /
router.

NET101 User’s Manual -7-