Planet Networking & Communication Modbus Gateway Series User manual

User’s Manual of MG-11x Modbus Gateway Series
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RS232/RS422/RS485
Modbus Gateway Series
MG-110 / MG-115AT / MG-120

User’s Manual of MG-11x Modbus Gateway Series
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Trademarks
Copyright © PLANET Technology Corp. 2020.
Contents are subject to revision without prior notice.
PLANET is a registered trademark of PLANET Technology Corp. All other trademarks belong to their respective owners.
Disclaimer
PLANET Technology does not warrant that the hardware will work properly in all environments and applications, and makes no
warranty and representation, either implied or expressed, with respect to the quality, performance, merchantability, or fitness for
a particular purpose. PLANET has made every effort to ensure that this User's Manual is accurate; PLANET disclaims liability
for any inaccuracies or omissions that may have occurred.
Information in this User's Manual is subject to change without notice and does not represent a commitment on the part of
PLANET. PLANET assumes no responsibility for any inaccuracies that may be contained in this User's Manual. PLANET makes
no commitment to update or keep current the information in this User's Manual, and reserves the right to make improvements to
this User's Manual and/or to the products described in this User's Manual, at any time without notice.
If you find information in this manual that is incorrect, misleading, or incomplete, we would appreciate your comments and
suggestions.
FCC Warning
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 own expense.
CE Mark Warning
This is a ClassA product. In a domestic environment, this product may cause radio interference, in which case the user may be
required to take adequate measures.
Energy Saving Note of the Device
This power required device does not support Standby mode operation. For energy saving, please remove the power cable to
disconnect the device from the power circuit. In view of saving the energy and reducing the unnecessary power consumption, it
is strongly suggested to remove the power connection for the device if this device is not intended to be active.
WEEE Warning
To avoid the potential effects on the environment and human health as a result of the presence of
hazardous substances in electrical and electronic equipment, end users of electrical and electronic
equipment should understand the meaning of the crossed-out wheeled bin symbol. Do not dispose of
WEEE as unsorted municipal waste and have to collect such WEEE separately.
Revision
PLANET MG-11x Series User's Manual
Model:MG-110 / MG-115A / MG-120
Revision: 1.0 (Auguest, 2020)
Part No: EM-MG-11x_v1.0

User’s Manual of MG-11x Modbus Gateway Series
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TABLE OF CONTENTS
1.INTRODUCTION .................................................................................................................... 5
1.1 Packet Contents.............................................................................................................................................5
1.2 Product Description........................................................................................................................................6
1.3 How to Use This Manual ..............................................................................................................................10
1.4 Product Features..........................................................................................................................................11
1.5 Product Specifications..................................................................................................................................12
2. INSTALLATION ...................................................................................................................15
2.1 Hardware Description................................................................................................................................15
2.1.1 Physical Dimensions .................................................................................................................................15
2.1.3 Front / Top Panel .......................................................................................................................................19
2.1.4 LED Indications .........................................................................................................................................20
2.1.5 Rear Panel ...............................................................................................................................................20
2.1.6 Power Information: ....................................................................................................................................21
2.1.7 Serial Port Pin Define................................................................................................................................22
2.2 Installing the Modbus Gateway.................................................................................................................23
2.2.1 Installation Steps.......................................................................................................................................23
2.2.2 Wall-mount Installation ..............................................................................................................................24
2.2.3 Media Chassis Installation (MG-110/115A) ...............................................................................................25
2.2.4 Optional DIN-rail Installation......................................................................................................................25
3. MODBUS GATEWAY MANAGEMENT................................................................................27
3.1 Requirements...............................................................................................................................................27
3.2 Web Management........................................................................................................................................28
3.2.1 Logging in to the Modbus Gateway...........................................................................................................28
3.3 Remote Management...................................................................................................................................30
3.4 PLANET Smart Discovery Utility..................................................................................................................31
3.5 Getting Started with MB VCOM Utility..........................................................................................................33
3.5.1 Installation of MB VCOM Utility .................................................................................................................33
3.5.2Searching Modbus Gateway .....................................................................................................................33
4. WEB CONFIGURATION......................................................................................................35
4.1 Main Web Page............................................................................................................................................37
4.2 System..........................................................................................................................................................38

User’s Manual of MG-11x Modbus Gateway Series
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4.2.1 System.................................................................................................................................................................38
4.2.2 Port......................................................................................................................................................................40
4.2.3 Device..................................................................................................................................................................41
4.2.4 Time.....................................................................................................................................................................41
4.2.5 Console................................................................................................................................................................42
4.2.6 Email....................................................................................................................................................................42
4.3 Accessible IP................................................................................................................................................44
4.4 Network ........................................................................................................................................................45
4.5 Modbus Gateway .........................................................................................................................................46
4.5.1 Serial setup..........................................................................................................................................................46
4.5.2 Operation mode...................................................................................................................................................47
4.5.2.1 Disable mode....................................................................................................................................................47
4.5.2.2 RTU Slave mode...............................................................................................................................................48
4.5.2.3 RTU Master mode.............................................................................................................................................49
4.5.2.4 ASCII Slave mode.............................................................................................................................................49
4.5.2.5 ASCII Master mode...........................................................................................................................................50
4.5.3MB COM ..............................................................................................................................................................50
4.5.4Modbus Config.....................................................................................................................................................51
4.5.4.1Router ..............................................................................................................................................................51
4.5.4.2Mapping.............................................................................................................................................................52
4.5.4.3Parameters........................................................................................................................................................54
4.5.5Priority Control......................................................................................................................................................54
4.5.5.1Master ..............................................................................................................................................................54
4.5.5.2TCP ..............................................................................................................................................................55
4.5.5.3Request.............................................................................................................................................................55
4.6 SNMP Setup.................................................................................................................................................56
4.7 Maintenance.................................................................................................................................................57
4.7.1 Change Password ...............................................................................................................................................57
4.7.2 Load Default ........................................................................................................................................................57
4.7.3 Firmware Update.................................................................................................................................................58
4.8 Save and Restart..........................................................................................................................................59
5. SOFTWARE MB VCOM UTILITY........................................................................................ 60
5.1 Installing the VCOM Utility............................................................................................................................60
5.2 Search Devices ............................................................................................................................................63
5.3 COM Port Mapping.......................................................................................................................................64

User’s Manual of MG-11x Modbus Gateway Series
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1. INTRODUCTION
Thank you for purchasing PLANET MG-110/MG-115A/ MG-120 Modbus Gateway. “Modbus Gateway” is used as an alternative
name in this User’s Manual.
MG-110 1-Port RS232/422/485 Modbus Gateway
MG-115A 1-Port RS232/422/485 Modbus Gateway with 1-Port 100BASE-FX SFP
MG-120 2-Port RS232/422/485 Modbus Gateway
“Modbus Gateway” mentioned in this Guide refers to the MG-110/MG-115A/ MG-120.
1.1 Packet Contents
Open the box of the Modbus Gateway and carefully unpack it. The box should contain the following items:
The Modbus Gateway x 1
User’s Manual x 1
External AC-DC Power Adapter x 1
If any of these are missing or damaged, please contact your dealer immediately; if possible, retain the carton including the
original packing material, and use them again to repack the product in case there is a need to return it to us for repair.

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1.2 Product Description
Standard Modbus TCP/RTU/ASCII Network Integration
PLANET MG-11x 1-port RS232/422/485 Modbus Gateway Series supports the standard Modbus Protocol, which makes it
possible for converting any Modbus Protocols between Modbus TCP, Modbus RTU, and Modbus ASCII for all supported
hardware interfaces.Its serial protocol can be used for industrial automation where SCADAor HMI system is in place. Moreover,
its network integration can be upgraded from the SNMP network to the automated Modbus TCP network, which brings
interconnection over Ethernet longer distances, thus making a network infrastructure more flexible.
A Conversion Bridge for Flexible Network Deployment
The MG-11x Series can be a conversion bridge between the equipment with the Modbus RTU/ASCII Protocol and the
administrator workstations that run the Modbus TCP/IP Protocol. The RS232/422/485 serial interface of the MG-11x Series
provides the Modbus RTU/ASCII operation mode and various baud rate options to meet the demand of integration between the
Modbus TCP/IP Protocol, Modbus RTU Master/Slave Protocol and ModbusASCII Master/Slave Protocol.

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The advantage of having the MG-11x Series is to assist users to build an environment between the Modbus TCP Protocol and
the Modbus RTU/ASCII Protocol easily, thus offering an application solution to the control equipment without Ethernet ports, and
the control equipment can only control through a PC workstation or control panel.
In addition, the effective integration solution of Modbus Ethernet devices, Modbus serial equipment or multi Modbus master /
slave in an hybrid network brings the following:
■Master mode supports up to 32 TCP slave connection requests
■ Slave mode supports up to 32 TCP master connection requests

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Remote Management
The MG-11x Series makes the connected Modbus RTU/ASCII equipment become IP-based facilities and is able to connect to
the Modbus TCP/IP network via its R232/422/485 serial interface and 10/100BASE-TX RJ45 or 100BASE-FX Ethernet port. It
provides a remote web management and telnet interface for efficient remote network management. The MG-11x Series also
provides PLANET Modbus Gateway utility tool and supports PLANET Smart Discovery utility to help network administrator to
easily get the current IP subnet address information or change the IP subnet address setting of the MG-11x Series.

User’s Manual of MG-11x Modbus Gateway Series
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Modbus Serial Port State Monitoring
The MG-11x Series shows the details of the total bytes transmitted and received on the RS232/422/485 serial interface, and the
detailed total number of frames transmitted and received on the remote web/telnet management interface. This function allows
network administrator to check the status and statistics of the MG-11x Series via the single RS232/422/485 serial interface.
Fiber-optic Link Capability Extends the Range of Network Deployment (Only MG-115A)
The maximum distance between two IP devices via Ethernet UTP cable is 100 meters. To flexibly extend the deployment range
of Modbus gateway, the MG-115A’s SFP slot supporting 100BASE-FX SFP modules and more can reach a transmission
distance of up to 120km.
Easy Chassis Installation (Only MG-110/115A)
The MG-11x Series can be used as a stand-alone unit or as a slide-in module to the PLANET Media Converter Chassis
(MC-700 and MC-1500 chassis series). The media chassis can assist in providing DC power to the MG-11x Series and can be
DIN-rail or wall mounted for efficient use of cabinet space, without the need of replacing the existing serial equipment and
software system.

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1.3 How to Use This Manual
This User’s Manual is structured as follows:
Section 2, INSTALLATION
It explains the functions of the MG-11x Series and how to physically install the MG-11x Series.
Section 3, MODBUS GATEWAY MANAGEMENT
The chapter explains how to manage the MG-11x Series in different ways.
Section 4, WEB CONFIGURATION
It describes how to configure by web interface.
Section 5,SOFTWARE VCOM UTILITY
It describes how to use software VCOM in the Virtual COM mode.

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1.4 Product Features
Serial Interface
■One/Two DB9 interface supports RS232, 2-wire RS485, 4-wire RS485 and RS422 standards
■Asynchronous serial data rates up to 921600bps
Ethernet Interface
■1-port 10/100BASE-TX RJ45 interface with auto MDI/MDI-X function
■1-port 100BASE-FX SFP slot (MG-115A)
Management Function
■Built-in IP-based Web interface and telnet interface for remote management
■Software Protocol supports Modbus TCP, Modbus RTU, Modbus ASCII, IP, ARP, DHCP and DNS
■Supports RTU Master, RTU Slave, ASCII Master, and ASCII Slave four serial operation modes via management
interface
■Master mode supports 32 TCP slave connection requests
■Slave mode supports 32 TCP master connection requests
■PLANET Modbus Gateway utility for finding client device on the network.
■PLANET Smart Discovery utility automatically finds the client devices on the network
■Firmware upgrade/configuration backup and restore via HTTP protocol
Case and Installation
■Compact size for easy Installation:
- Standalone - Wall mountable or DIN-rail mounting (optional accessory)
- Co-works with PLANET media chassis MC-700/1500. (Only MG-110/115A)
■-10 to 60 degrees C operating temperature
■Reset button for resetting to factory default

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1.5 Product Specifications
Product MG-110 MG-115A MG-120
Serial Interface
Serial Port 1 x DB9 male 2 x DB9 male
Serial Standards
RS232/RS422/4-wire RS485/2-wire RS485
Baud Rate (Data Rate) 50bps to 921Kbps
Data Bits 5, 6, 7, 8
Stop Bit 1, 1.5, 2
Parity Type
Odd, Even, None, Space, Mark
Flow Control RTS/CTS and DTR/DSR (RS232 only)
XON/XOFF
Signals
RS232: TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND
RS422: Tx+, Tx-, Rx+, Rx-, GND
4-wire RS485: Tx+, Tx-, Rx+, Rx-, GND
2-wire RS485: Data A (+), Data B (-), GND
Pin Assignment
Operation Mode
RTU Master/RTU Slave/ASCII Master/ASCII Slave
Master mode: Supports up to 32 TCP slave connection requests
Slave mode: Supports up to 32 TCP master connection requests
Ethernet Interface
Ethernet Ports 1 x RJ45 1 x SFP 1 x RJ45
Standard 10/100BASE-TX 100BASE-FX 10/100BASE-TX
Distance 100m 2km to 120km, vary on SFP
modules 100m
ESD Protection 6KV
Hardware
Installation DIN-rail kit and wall-mount ear
Dimensions (W x D x H) 97 x 70 x 26mm 97 x 70 x 26mm 97 x 70 x 26mm
Weight
184 g 185 g 189g
LED Indicators
System: Link
TP/SFP Port: Link/ Active
Serial Port: Active
Power Requirements External Power Adaptor 5V DC, 2A max.
Power Consumption 5.5 watts (max)

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Mechanical Metal
Reset Button < 5 sec: System reboot
> 5 sec: Factory default
Management
Management Interfaces
Web management
Telnet Console management
Windows-based VCOM Utility management
SNMPv1, v2c / SNMP Trap
UNI-NMS monitoring
PLANET Smart Discovery Utility
IP Version IPv4
Operation Mode
RTU Master
RTU Slave
ASCII Master
ASCII Slave
Virtual COM Utility
Platform Supports
Windows-based Only:
Windows XP
Windows Server 2003
Windows 7
Windows Server 2008
Windows 8 (Must install the latest version of WinPcap)
Windows Server 2012 (Must install the latest version of WinPcap)
Windows 10
Fault Alarm
Record: System log / SNMP trap
Time NTP
Security Accessible IP (white list)
SNMP SNMP v1 and v2c
Standards Conformances
Regulatory Compliance FCC Part 15 Class A,
CE Certification Class A
Standards
IEEE 802.3 10BASE-T,
IEEE 802.3u 100BASE-TX/100BASE-FX
RFC 768 UDP
RFC 793 TFTP
RFC 791 IP
RFC 792 ICMP
RFC 854 Telnet
RFC 958 NTP
RFC 1908 SNMPv2c
RFC 2068 HTTP
RFC 2131 DHCP Client
EIA/TIA RS232/422/485
Regulatory Approval RoHS
Compatible Media
Converter Chassis
MC-700, MC-1500, MC-1500R N/A

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Note. Reset Button on the rear panel for resetting to factory default
Environment
Operating Temperature -10 ~ 60 degrees C
Storage Temperature
-10 ~ 70 degrees C
Humidity 5 ~ 95% (non-condensing)

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2. INSTALLATION
This section describes the hardware features and installation of the Modbus Gateway' components on the desktop or rack. For
easier management and control of the Modbus Gateway, familiarize yourself with its display indicators, and ports. Front panel
illustrations in this chapter display the LED indicators. Before connecting any network device to the Modbus Gateway, please
read this chapter completely.
2.1 Hardware Description
2.1.1 Physical Dimensions
MG-110: 94 x 70 x 26mm (W x D x H)

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User’s Manual of MG-11x Modbus Gateway Series
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MG-115A: 94 x 70 x 26mm (W x D x H)

User’s Manual of MG-11x Modbus Gateway Series
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MG-120: 94 x 70 x 26mm (W x D x H)

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2.1.3 Front / Top Panel
The front panels of the Modbus Gateways are shown in Figure 2-1-1.
MG-110 MG-115A
MG-120
Figure 2-1-1: Front Panels of Modbus Gateway
The top panel of the MG-120 is shown in Figure 2-1-2.
MG-120
Figure 2-1-2: Top Panel of MG-120
Fast TP/ SFP interface
10/100BASE-TX copper, RJ45 twisted-pair: Up to 100 meters.
100BASE-FX SFP interface, Up to 2km~120km, vary on SFP modules.
Serial Interface
Supports RS-232, RS-422, RS-485 2-wire and RS485 4-wire.

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2.1.4 LED Indications
The front/top panel LEDs indicate the instant status of power and system status, port links and data activity; they help monitor
and troubleshoot when needed.
System
LED
Color
Function
PWR
Green
Lights
Power is activated.
Serial
(TX/RX) Green Blinks To indicate the Serial Port is receiving or sending data
10/100BASE-TX/100BASE-FX Port
MG-110/115A
TP or Fiber Green
Lights To indicate that the Fast Ethernet port is successfully
connecting to the network at 10Mbps or 100Mbps (Fiber
port only 100Mbps)
Blinks To indicate the Fast Ethernet Port is receiving or sending
data
MG-120
TP Port
Off To indicate that the Fast Ethernet port is successfully
connecting to the network at 10Mbps.
Amber
(100)
Lights To indicate that the Fast Ethernet port is successfully
connecting to the network at 100Mbps.
Green
(LNK/ACT) Blinks To indicate the TP Port is receiving or sending data
2.1.5 Rear Panel
The rear panels of Modbus Gateways consist of one DC jack, which accepts input power with 5V DC, 2A(Figure 2-1-3).
MG-110 / MG-115A MG-120
Figure 2-1-3: One DC jack for DC power input
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