Atop MB5904D User manual

MB59XX Modbus Gateway
User Manual
V 1.1
MB59XX Series
Modbus Gateway
User Manual
V1.1
September 25th, 2017
Atop Technologies, Inc.

MB59XX Modbus Gateway
User Manual
V 1.1
This PDF Document contains internal hyperlinks for ease of navigation.
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Published by:
Atop Technologies, Inc.
2F, No. 146, Sec. 1, Tung-Hsing Rd,
30261 Chupei City,
Hsinchu County
Taiwan, R.O.C.
Tel: [phone]
Fax: [phone]
[e-mail]
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www.atop.com.tw

MB59XX Modbus Gateway
User Manual
V 1.1
Important Announcement
The information contained in this document is the property of Atop technologies, Inc., and is supplied for the sole
purpose of operation and maintenance of Atop Technologies, Inc., products.
No part of this publication is to be used for any other purposes, and it is not to be reproduced, copied, disclosed,
transmitted, stored in a retrieval system, or translated into any human or computer language, in any form, by any
means, in whole or in part, without the prior explicit written consent of Atop Technologies, Inc.,
Offenders will be held liable for damages and prosecution.
All rights, including rights created by patent grant or registration of a utility model or design, are reserved.
Disclaimer
We have checked the contents of this manual for agreement with the hardware and the software described. Since
deviations cannot be precluded entirely, we cannot guarantee full agreement. However, the data in this manual is
reviewed regularly and any necessary corrections will be included in subsequent editions.
Suggestions for improvement are welcome.
All other product’s names referenced herein are registered trademarks of their respective companies.
Documentation Control
Author:
Saowanee Saewong
Revision:
1.1
Revision History:
Update logo & HW info
Creation Date:
24 March 2017
Last Revision Date:
25 September 2017
Product Reference:
MB59XX Series Modbus Gateway User Manual
Document Status:
Update

MB59XX Modbus Gateway
User Manual
V 1.1
Table of Contents
1Preface .................................................................................................................................7
1.1 Purpose of the Manual...........................................................................................................................7
1.2 Who Should Use This User Manual .......................................................................................................7
1.3 Supported Platform ................................................................................................................................7
1.4 Manufacturers’ FCC Declaration of Conformity Statement ................................................................7
2Introduction..........................................................................................................................8
2.1 Overview..................................................................................................................................................8
3Getting Started.................................................................................................................. 10
3.1 Packing List ......................................................................................................................................... 10
3.2 Appearance, Front and Rear Panels ................................................................................................... 11
3.3 First Time Installation ......................................................................................................................... 13
3.4 Factory Default Settings...................................................................................................................... 14
3.4.1 Network Default Settings .................................................................................................................... 14
3.4.2 Modbus Default Settings .................................................................................................................... 14
4Configuration and Setup .................................................................................................. 15
4.1 Configuration of Network Parameters through Device Management Utility ................................... 15
4.2 Configuring through Web Interface .................................................................................................... 17
4.3 Configuring Automatic IP Assignment with DHCP ........................................................................... 19
4.4 Web Overview ...................................................................................................................................... 19
4.5 Network Configuration ........................................................................................................................ 19
4.6 Basic Settings ...................................................................................................................................... 21
4.6.1 COM Settings....................................................................................................................................... 21
4.6.2 Operation Mode ................................................................................................................................... 22
4.6.3 Serial Settings...................................................................................................................................... 23
4.6.4 VCOM Settings .................................................................................................................................... 23
4.6.5 TCP Settings ........................................................................................................................................ 25
4.6.6 Slave ID Map ........................................................................................................................................ 27
4.7 Advanced Settings .............................................................................................................................. 28
4.7.1 SNMP Settings..................................................................................................................................... 28
4.7.2 Modbus ................................................................................................................................................ 31
4.8 Alert ...................................................................................................................................................... 32
4.8.1 Settings ................................................................................................................................................ 32
4.8.2 Alert Events.......................................................................................................................................... 33
4.9 System ................................................................................................................................................. 34
4.9.1 Log Settings......................................................................................................................................... 34
4.9.2 System Log .......................................................................................................................................... 34
4.9.3 Data Log............................................................................................................................................... 34
4.9.4 Modbus Statistic ................................................................................................................................. 35
4.9.5 Time ..................................................................................................................................................... 35
4.9.6 Security ................................................................................................................................................ 36
4.9.7 Import / Export....................................................................................................................................... 38
4.9.8 Factory Default .................................................................................................................................... 39
4.10 Restart.................................................................................................................................................. 40
5Applications and Examples ............................................................................................. 41
5.1 Using ID offset range mapping........................................................................................................... 41
6Specifications ................................................................................................................... 43

MB59XX Modbus Gateway
User Manual
V 1.1
6.1 Hardware.............................................................................................................................................. 43
6.2Serial port Pin Assignments ............................................................................................................... 45
6.2.1 MB5901 Pin Assignments .................................................................................................................. 45
6.2.2 MB5904D Pin Assignments................................................................................................................ 46
6.2.3 MB5901B Pin Assignments ................................................................................................................ 47
6.2.4 MB5908A/MB5916A Pin Assignments.............................................................................................. 48
6.2.5 MB5908/MB5916 Pin Assignments................................................................................................... 49
6.3 LED Indicators ..................................................................................................................................... 50
6.4 Software............................................................................................................................................... 50
7Warranty ............................................................................................................................ 51
Table of Figures
Figure 2.1 Possible Network Configuration of MB59XX Series Modbus Gateway .......................................................8
Figure 2.2 Use Cases of the MB59XX Series Modbus Gateway ....................................................................................9
Figure 4.1 List of Device in Device Management Utility............................................................................................... 15
Figure 4.2 Pull-down Menu of Configuration and Network.......................................................................................... 16
Figure 4.3 Pop-up Window of Network Setting ............................................................................................................ 16
Figure 4.4 Authorization for Changes of Network Setting........................................................................................... 17
Figure 4.5 Pop-up Notification Window after Authorization ....................................................................................... 17
Figure 4.6 Overview Web Page of Modbus Gateway ................................................................................................... 18
Figure 4.7 Map of Configuring Web Page on Modbus Gateway ................................................................................. 18
Figure 4.8 Overview Web Page...................................................................................................................................... 19
Figure 4.9 Network Web Page ....................................................................................................................................... 20
Figure 4.10 Save Sucessfully Page with a Restart Hyperlink ...................................................................................... 21
Figure 4.11 System Restarting Web Page .................................................................................................................... 21
Figure 4.12 COM Settings Web Page ............................................................................................................................ 22
Figure 4.13 Save Successfully Message ...................................................................................................................... 23
Figure 4.14 VCOM Settings Web Page.......................................................................................................................... 24
Figure 4.15 Pull-down Menu of VCOM Mode............................................................................................................... 24
Figure 4.16 Check Box for Applying the Settings to All VCOMSs ............................................................................... 25
Figure 4.17 Modbus TCP Settings Web Page with TCP Slave Mode .......................................................................... 25
Figure 4.18 Modbus TCP Setting Page with TCP Master Operation Mode Selection ............................................... 26
Figure 4.19 Slave ID Map Page with Slave ID Setting in Alias Mode .......................................................................... 27
Figure 4.20 Slave ID Map Web Page with Slave ID Setting in in Offset Mode ........................................................... 28
Figure 4.21 SNMP Settings Web Page with SNMP disabled....................................................................................... 28
Figure 4.22 SNMP Settings Web Page with SNMP Enabled and Version v1/v2c/v3................................................. 30
Figure 4.23 SNMP Settings Web Page with SNMP Enabled and Version v1/v2c ...................................................... 30
Figure 4.24 SNMP Settings Web Page with SNMP Enabled and Version Only v3 ..................................................... 31
Figure 4.25 Advanced Modbus Settings of Response Timeout for Modbus Exception ............................................ 31
Figure 4.26 SMTP Settings Web Page .......................................................................................................................... 32
Figure 4.27 Alert Events Web Page ............................................................................................................................... 33
Figure 4.28 Log Settings Web Page .............................................................................................................................. 34
Figure 4.29 System Log Web Page ............................................................................................................................... 34
Figure 4.30 Data Log Web Page .................................................................................................................................... 35
Figure 4.31 Modbus Statistics Web Page..................................................................................................................... 35
Figure 4.32 Time Web Page........................................................................................................................................... 36
Figure 4.33 Security Web Page ..................................................................................................................................... 37
Figure 4.34 Authentication Required after a Password Change ................................................................................. 37
Figure 4.35 Import/Export Web Page............................................................................................................................ 38

MB59XX Modbus Gateway
User Manual
Preface
Figure 4.36 File Chooser for Uploading a Configuration File to Modbus Gateway .................................................... 39
Figure 4.37 Export Configuration File from Modbus Gateway .................................................................................... 39
Figure 4.38 Factory Default Web Page ......................................................................................................................... 40
Figure 4.39 Restart Web Page ....................................................................................................................................... 40
Figure 5.1 Continuous Slave ID Mapping Example ...................................................................................................... 41
Figure 5.2 Entries of Slave ID Mapping in Offset Mode ............................................................................................... 42
Figure 6.1 DB9 Pin Number ........................................................................................................................................... 45
Figure 6.2 Terminal Block (TB-5) Pin Number.............................................................................................................. 45
Figure 6.3 DB9 Pin Number ........................................................................................................................................... 46
Figure 6.4 Terminal Block (TB-5) Pin Number.............................................................................................................. 46
Figure 6.5 DB9 Pin Number ........................................................................................................................................... 47
Figure 6.6 2 x 7-pin Male Terminal Block...................................................................................................................... 47
Figure 6.7 DB9 Pin Number ........................................................................................................................................... 48
Figure 6.8 Terminal Block (TB-5) Pin Number.............................................................................................................. 48
Figure 6.9 MB5908/MB5916 Serial port on RJ45 Pin Numbering .............................................................................. 49
List of Tables
Table 3.1 Packing List.................................................................................................................................................... 10
Table 3.2 Modbus Default Settings............................................................................................................................... 14
Table 3.3 Other Default Settings ................................................................................................................................... 14
Table 6.1 Hardware Specification ................................................................................................................................. 43
Table 6.2 MB5901 Pin Assignment for DB9 to RS-232/RS422/RS-485 Connectors ................................................. 45
Table 6.3 MB5901 Pin Assignment for 5-Pin Terminal Block to RS-232/RS-422/RS-485 Connectors..................... 45
Table 6.4 MB5904D Pin Assignment for DB9 to RS-232/RS422/RS-485 Connectors............................................... 46
Table 6.5 MB5904D Pin Assignment for 5-Pin Terminal Block to RS-232/RS-422/RS-485 Connectors .................. 46
Table 6.6 MB5901B Pin Assignment for DB9 to RS-232/RS-485 Connector ............................................................. 47
Table 6.7 MB5901B 2 x 7-pin Male TB for RS-232/485(COM 1),RS-232(COM 2) Relay and DI pin-assignment...... 47
Table 6.8 MB5908A/16A Pin Assignment for DB9 to RS-232/RS422/RS-485 Connectors....................................... 48
Table 6.9 MB5908A/16A Pin Assignment for 5-Pin Terminal Block to RS-232/RS-422/RS-485 Connectors.......... 48
Table 6.10 MB5908/16 Pin Assignment for RJ45 to RS-232/RS422/RS-485 Connectors........................................ 49
Table 6.11 Color Interpretation of LED Indicators........................................................................................................ 50
Table 6.12 Software Tools and Utilities ........................................................................................................................ 50

MB59XX Modbus Gateway
User Manual
Preface
1Preface
1.1 Purpose of the Manual
This manual supports the user during the installation and configuring of the MB59XX Series Modbus Gateway. It
explains the technical features available with the mentioned product. As such, it contains some advanced
network management knowledge, instructions, examples, guidelines and general theories designed to help users
manage this device and its corresponding software. A background in general theory is necessary when reading it.
Please refer to the Glossary for technical terms and abbreviations (if any).
1.2 Who Should Use This User Manual
This manual is to be used by qualified network personnel or support technicians who are familiar with network
operations.It might be useful for system programmers or network planners as well. This manual also provides
helpful and handy information for first time users. For any related problems, please contact your local distributor.
If they are unable to assist you, please redirect your inquiries to www.atop.com.tw or www.atoponline.com.
1.3 Supported Platform
This manual is designed for MB59XX Series Modbus Gateway and that series only.
1.4 Manufacturers’ FCC Declaration of Conformity Statement
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference
when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his/her own expense.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
1. This device may not cause harmful interference, and
2. This device must accept any interference received, including interference that may cause an undesired
operation.
Note: all the figures herein are intended for illustration purposes only. This software and certain features work only on certain Atop’s devices.

MB59XX Modbus Gateway
User Manual
Introduction
2Introduction
2.1 Overview
The MB59XX Modbus Gateway is an industrial network device in between Modbus over Serieal Line devices and
computer hosts running Modbus/TCP on Ethernet network. Figure 2.1 illustrates a possible network configuration
of the MB59XX Series Modbus Gateway. Fully compliant with Modbus/TCP protocol, the Modbus gateway offers a
convenient solution to connect existing devices or controllers running Modbus serial protocol (Modbus/ASCII or
Modbus/RTU) to an Ethernet network. The MB59XX Series are standard Modbus gateways that convert packets
between Modbus TCP and Modbus RTU/ASCII protocols.
The MB59XX Series supports 64 simultaneous TCP masters. Overall, 247 Servers are supported (TCP, COM and
VCOM). Each RS-232/422/485 serial port can be individually configured for Modbus/RTU or Modbus/ASCII
operation with different baud rate, allowing both types of networks to be fully integrated with Modbus/TCP within
one package.
Figure 2.1 Possible Network Configuration of MB59XX Series Modbus Gateway
Figure 2.2 shows three different use cases of the MB59XX Series Modbus Gateway:

MB59XX Modbus Gateway
User Manual
Introduction
1) the interface between Modbus RTU/ASCII serial host to Modbus RTU/ASCII serial devices
2) the interface between Modbus/TCP over Ethernet network to Modbus RTU/ASCII serial devices
3) the interface between Modbus RTU/ASCII host connected through Serial IP over Ethernet (virtual
communication port (VCOM)) to Modbus RTU/ASCII serial devices.
Figure 2.2 Use Cases of the MB59XX Series Modbus Gateway
Caution
Beginning from here, extreme caution must be exercised.
Never install or work with electricity or cabling during periods of lightning
activity. Never connect or disconnect power when hazardous gases are
present.
Warning: HOT!
WARNING:Disconnect the power and allow unit to cool for 5 minutes before touching.

MB59XX Modbus Gateway
User Manual
Getting Started
3Getting Started
3.1 Packing List
Inside the purchased package, you will find the following items.
Table 3.1 Packing List
Item
Quantity
Description
MB59XX
1
Industrial Serial Device Server
Mounting Kit
1
On MB5908 / MB5916 / MB5908A / MB5916A
Rack Mounting Type-L angles (x 2)
Screws (x 6)
On MB5901 / MB5904D / MB5901B - DIN Rail Kit
Terminal Block
Power Supply/ Relay output:
TB3 x 1: 3-pin 5.08mm lockable Terminal Block (MB5901, MB5901B)
TB3 x 2: 3-pin 5.08mm lockable Terminal Block (MB5908-DC,MB5916-DC)
TB7 x1: 7-pin 5.08mm lockable Terminal Block (MB5904D only)
Serial ports: Terminal block is included only on TB model
TB5 x 1: 5-pin 5.08mm lockable Terminal Block (MB5901)
TB5 x 4: 5-pin 5.08mm lockable Terminal Block (MB5904D)
TB5 x 8: 5-pin 5.08mm lockable Terminal Block (MB5908A)
TB5 x 16: 5-pin 5.08mm lockable Terminal Block (MB5916A)
Documentation
1
Hardware Installation Guide (Warranty card is included)
Note:
Notify your sales representative immediately if any of the above items is missing or damaged upon delivery.
Atop’s utility software Device View© and Serial Manager© are obsolete and replaced by Device
Management Utility®.
Table 3.2 Description of Optional Accessories
Optional Accessories
Model Name
Part Number
Description
Wall Mount Kit
70100000000050G
Black aluminum wall mount kit
ADP-DB9(F)-TB5
59906231G
Female DB9 to Female 3.81mm, a TB5 Converter
SDR-75-24
50500752240001G
75W/3.2A DIN-Rail 24VDC power supply 88~264VAC / 124-
370VDC input
UN315-1212(US-Y)
50500151120003G
Y-Type power adaptor, 100~240VAC input, 1.25A @ 12VDC
output, US plug, LV6
UNE315-1212(EU-Y)
50500151120013G
Y-Type power adaptor, 100~240VAC input, 1.25A @ 12VDC
output, EU plug, LV6
LM28-C3S-TI-N
50708031G
SFP Transceiver, 1250Mbps, 850nmVCSEL, Multi-mode, 550m,
3.3V, -20~85°C
LM38-C3S-TI-N
50709411G
SFP Transceiver, 1250Mbps, 1310nmFP, Multi-mode, 2km, 3.3V, -
40~85°C
LS38-C3S-TI-N
50709391G
SFP Transceiver, 1250Mbps, 1310nmFP, Single-mode, 10km,
3.3V, -40~85°C

MB59XX Modbus Gateway
User Manual
Getting Started
LS38-C3L-TI-N
50709441G
SFP Transceiver, 1250Mbps, 1310nmDFB, Single-mode, 30km,
3.3V, -40~85°C
LM38-A3S-TI-N
50708051G
SFP Transceiver, 155Mbps, 1310nmLED, Multi-mode, 2km, 3.3V, -
40~85C
LS38-A3S-TI-N
50709431G
SFP Transceiver, 155Mbps, 1310nmFP, Single-mode, 30km, 3.3V,
-40~85C
3.2 Appearance, Front and Rear Panels
The following figures show particular MB59XX series device’s front and rear panels.
MB5901
MB5904D

MB59XX Modbus Gateway
User Manual
Getting Started
MB5901B
MB5908/16

MB59XX Modbus Gateway
User Manual
Getting Started
MB5908A/16A
3.3 First Time Installation
Before installing the device, please follow strictly all safety procedures described in the Hardware installation guide
supplied inside the product. Atop will not be liable for any damages to property or personal injuries resulting from
the installation or overall use of the device. Do not attempt to manipulate the product in any way if unsure of the
steps described there. In such cases, please contact your dealer immediately.
Specific installation instructions are not provided in this manual since they may differ considerably based on the
hardware purchased.

MB59XX Modbus Gateway
User Manual
Getting Started
3.4 Factory Default Settings
3.4.1 Network Default Settings
The MB59XX Modbus Gateway comes with one IP address specifically for redundant Ethernet interfaces.
Interface
Device IP
Subnet Mask
Gateway IP
LAN 1
10.0.50.100
255.255.0.0
10.0.0.254
LAN 2
192.168.1.1
255.255.255.0
192.168.1.254
LAN 3~6
(MB5908A and MB5916A only)
192.168.2.1~5.1
255.255.255.0
192.168.1.254
Remarks: Default DNS 1 setting is 168.95.1.1 and DNS 2 setting is 0.0.0.0.
3.4.2 Modbus Default Settings
The MB59XX Modbus Gateway comes with the following default Modbus settings.
Table 3.3 Modbus Default Settings
Parameter
Default Values
Modbus Master
TCP Settings
TCP Master Mode: TCP Master
Port: 502
Modbus Slave
MB5901
MB5904
MB5908
MB5916
MB5908A
MB5916A
Mode: RTU Slave
Serial Configuration: RS-232, 9600 bps, 8 data bits, No
parity bit, 1 stop bit, No Flow Control, Buffer Disable
Other default settings are shown in the following table.
Table 3.4 Other Default Settings
Parameter
Default Values
Security
User Name
admin
Password
default
SNMP
SysName of SNMP
0060E9-XXXXXX
SysLocation of SNMP
Location
SysContact of SNMP
Contact
SNMP
Disable (Unchecked)
Read Community
Public
Write Community
Private
SNMP Trap Server
0.0.0.0
Note: Press the “Reset” button on the front panel for 5 seconds (see Section 4.9.8 and Section 4.10), to restore the
MB59XX Series Modbus Gateway to the factory default settings.

MB59XX Modbus Gateway
User Manual
Configuration and
Setup
4Configuration and Setup
It is strongly recommended for the user to set the Network Parameters through Device Management Utility© first.
Other device-specific configurations can later be carried out via Atop’s user-friendly Web-Interface.
4.1 Configuration of Network Parameters through Device Management Utility
First, please install Atop’s configuration utility program called Device Management Utility® that comes with the
Product CD or can be downloaded from or websites (www.atop.com.tw or www.atoponline.com). For more
information on how to install Device Management Utility®, please refer to the manual that comes in the Product
CD. After you start Device Management Utility®, if the Modbus Gateway is already connected to the same subnet
as your PC, the device can be accessed via broadcast packets. Device Management Utility® will automatically
detect your Modbus Gateway and list it on Device Management Utility®’s window. Alternatively, if you did not see
your Modbus Gateway on your network, press “Rescan” icon, a list of devices, including your Modbus Gateway
device currently connected to the network will be shown in the window of Device Management Utility® as shown
in Figure 4.1.
Figure 4.1 List of Device in Device Management Utility
Note:This figure is for illustration purpose only. Actual values/settings may vary between devices.
Sometime the Modbus Gateway device might not be in the same subnet as your PC; therefore, you will have to use
Atop's utility to locate it in your virtual environment. To configure each device, first click to select the desired
Modbus Gateway device (default IP: 10.0.50.100) in the list of Device Management Utility©, and then click
“Configuration Network…” (or Ctrl+N) menu on Device Management Utility© as shown in Figure 4.2 or click on
the second icon called Network on the menu icon bar, and a pop-up window will appear as shown in Figure 4.3.

MB59XX Modbus Gateway
User Manual
Configuration and
Setup
Figure 4.2 Pull-down Menu of Configuration and Network...
Figure 4.3 Pop-up Window of Network Setting
You may proceed then to change the IP address to avoid any IP address conflict with other hosts on your LAN or
to connect the device to your existing LAN as shown in Figure 4.3. The system will prompt you for a credential to
authorize the changes. It will ask you for the Username and the Password as shown in Figure 4.4. The default
username is “admin”, while the default password “default”. After clicking on the Authorize button, a notification
window will pop-up as shown in Figure 4.5 and some device may be restarted. After the device is restarted (for
some model), it will beep twice to indicate that the unit is running normally. Then, the Modbus Gateway can be
found on a new IP address. It may be listed automatically by the Device Management Utility© or it can be found by
clicking on the “Rescan”icon.

MB59XX Modbus Gateway
User Manual
Configuration and
Setup
Figure 4.4 Authorization for Changes of Network Setting
Figure 4.5 Pop-up Notification Window after Authorization
Please consult your system administrator if you do not know your network’s subnet mask and gateway address.
Note:If your LAN address begins with 192.168.X.X, please use the LAN2 interface for configuration.
4.2 Configuring through Web Interface
Every MB59XX Modbus Gateway device is equipped with a built-in web server in the firmware. Therefore, the device
can be accessed by using a web browser for configuring by entering the device’s IP address (default IP address is
10.0.50.100) in the URL field of your web browser. Figure 4.6 illustrates the overview page of the web interface.
Please see Section 0 for default values.

MB59XX Modbus Gateway
User Manual
Configuration and
Setup
Figure 4.6 Overview Web Page of Modbus Gateway
Figure 4.7 Map of Configuring Web Page on Modbus Gateway

MB59XX Modbus Gateway
User Manual
Configuration and
Setup
This approach for configuring your device is the most user-friendly. It is the most recommended and the most
common method used for MB59XX Series Modbus Gateway. Please go to its corresponding section for a detailed
explanation.
4.3 Configuring Automatic IP Assignment with DHCP
A DHCP server can automatically assign IP addresses, Subnet Mask and Network Gateway to LAN1 or LAN2
interface. You can simply check the “DHCP (Obtain an IP Automatically)” checkbox in the Network Setting dialog
as shown in Figure 4.3 using Atop’s Device Management Utility© and then restart the device. Once restarted, the
IP address(es) will be configured automatically.
4.4 Web Overview
In this section, current information on the device’s status and settings will be displayed. An example of MB5904D-
Sis’s overview page is shown in Figure 4.8.
Figure 4.8 Overview Web Page
In detail, the following information is given:
Model Name, as its name implies, shows the device’s model
Device Information displays information on the Kernel version as well as the AP version of your Modbus
Gateway device.
Network Information shows the Mode in which the Modbus Gateway device is currently operating on (Dual
Subnet Mode or Redundancy Mode), and one of the used LAN for Redundancy Mode as shown in Figure 4.8 or
both LANs corresponding MAC and IP addresses for Dual Subnet mode.
oDual Subnet Mode: Two or six Ethernet ports have separate IP addresses and subnets.
oRedundancy Mode: The system will use only one port for data transfer. If the port is disconnected, the
whole system will change to another port automatically.
4.5 Network Configuration
In this section, IP address, Subnet Mask, Default (Network) Gateway, Domain Name System (DNS) and overall
connectivity settings of Modbus Gateway device can be accessed as shown in Figure 4.9. For any LAN Interface

MB59XX Modbus Gateway
User Manual
Configuration and
Setup
Settings (i.e. LAN1 or LAN2), you can check the corresponding DHCP box to obtain an IP address, Subnet Mask,
and Default (Network) Gateway automatically.The Default Gateway Select box is the next option after the LAN
Interface Settings. In this box, you will have option to select (either one of the two radio buttons) which LAN
interface (LAN1 or LAN2 in Figure 4.9) will be the default interface in the Default Gateway Select box.
Figure 4.9 Network Web Page
At the lowest box in Figure 4.9, you will have the DNS Settings box which allows you to set the IP addresses of
Domain Name Server 1 (DNS 1) and Domain Name Server 2 (DNS 2) for redundancy. If the device is connected to
the Internet and should connect to other servers over the Internet to get some services such as Network Time
Protocol (NTP) server, the user will need to configure the DNS server in order to be able to resolve the host name
of the NTP server. Please consult your network administrator or internet service provider (ISP) to obtain local DNS’s
IP addresses.
After finishing the network settings configuration, please click the Save Configuration button to save all changes
that have been made. A Save Successful message will appear with a hyperlink to restart the device as shown in
Figure 4.10. Click the restart hyperlink to apply the changes. A message indicating System Restarting status with
a countdown number will show up as shown in Figure 4.11. After a successful restart, the web browser will be
redirected to the Overview page as shown in Figure 4.8.