3One data GW110X Series User manual

Shenzhen 3onedata Technology Co., Ltd
GW110X series
Modbus Gateway User Manual
Version 1.0.1, Nov 2015
Shenzhen 3onedata Technology Co., Ltd
www.3onedata.com

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Statement
Copyright Notice
Information in this document is reserved by Shenzhen 3onedata Technology Co., Ltd.
Reproduction and extract without permission is prohibited.
Trademarks Notice
and is registered trademarks of Shenzhen 3onedata
Technology Co.,Ltd. All other trademarks or regitered marks in this manual belong to their
respective manufacturers.
Agreement
As the product version upgrades or other reasons, this document is subject to change
without notice. Unless other agreement, this document only as a guide to use. All statement,
information and suggestion in this document, without warranty of any kind, either expressed
or implied.
Revision History
Version No.
Date
Reason
V1.0.0
2015-07
Creating Documents
V1.0.1
2015-11
Added document content
Notes
In reading this manual, please pay attention to the following symbols,
：Information necessary to explain.
：Special attention.

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Content
Chapter 1 Summarize ................................................................................................................................................. 1
1.1 Introduction ................................................................................................................................................................ 1
1.2 Product Features......................................................................................................................................................... 1
Chapter 2 MODBUS Protocol Overview.................................................................................................................... 2
2.1 Protocol Description................................................................................................................................................... 2
2.2 Modbus RTU .............................................................................................................................................................. 4
2.3 Modbus ASCII............................................................................................................................................................ 4
2.4 Modbus TCP............................................................................................................................................................... 4
Chapter 3 Hardware Description................................................................................................................................ 5
3.1 Interface Description .................................................................................................................................................. 5
3.1.1 Power Input......................................................................................................................................................... 5
3.1.2 Communication Interface.................................................................................................................................... 5
3.1.3 LED Indicator...................................................................................................................................................... 7
3.1.4 Factory default.................................................................................................................................................... 8
3.1.5 Device installation............................................................................................................................................... 8
3.2 Appearance and Dimension...................................................................................................................................... 10
Chapter 4 Packing List...............................................................................................................................................13
Chapter 5 Telnet Management Function ...................................................................................................................14
5.1 Configuration through Telnet.................................................................................................................................... 14
5.2 How to modify the PC’s IP address.......................................................................................................................... 15
Chapter 6 WEB Management Function ....................................................................................................................16
6.1 Preparing configuration............................................................................................................................................ 16
6.2 System Statues.......................................................................................................................................................... 18
6.3 COM Setting............................................................................................................................................................. 19
6.3.1 Port Setting........................................................................................................................................................ 19
6.3.2 COM Information.............................................................................................................................................. 21
6.4 Modbus Setting......................................................................................................................................................... 21
6.4.1 Modbus parameter setting................................................................................................................................. 21
6.4.2 Slave ID............................................................................................................................................................. 23
6.4.3 Customer case ................................................................................................................................................... 28
6.5 Network Setting........................................................................................................................................................ 31
6.6 Security..................................................................................................................................................................... 33
6.6.1 Device Security.................................................................................................................................................. 33
6.6.2 IP Filter............................................................................................................................................................. 33
6.6.3 MAC Filter ........................................................................................................................................................ 34
6.6.4 User Manage..................................................................................................................................................... 35
6.7 State Monitor............................................................................................................................................................ 36
6.7.1 COM state.......................................................................................................................................................... 36
6.8 System Manage ........................................................................................................................................................ 37

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6.8.1 System information............................................................................................................................................ 37
6.8.2 System file.......................................................................................................................................................... 38
6.8.3 Logout & Reboot ............................................................................................................................................... 39
Chapter 7 Repair and Service....................................................................................................................................40
7.1 Internet Service......................................................................................................................................................... 40
7.2 Make a call to our technical office............................................................................................................................ 40
7.3 Repair or Replace..................................................................................................................................................... 40

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Chapter 1 Summarize
1.1 Introduction
GW110X series products are MODBUS gateway device. The series products include GW1101-1D(RS-232),
GW1101-1D(RS-485), GW1102-2D(RS-232), GW1102-2D(RS-485), GW1104-4D(RS-232), GW1104-4DI
(RS-485), GW1108-8D(RS-232) and GW1108-8DI (RS-485) eight models, which are used as a connection
between Modbus TCP and Modbus RTU/ASCII devices. The series products are provided 1/2/4/8 port RS232
(RJ45 connector) or RS485/422 (terminal block) and 1 port 10/100M Ethernet.
Modbus TCP, Modbus RTU and Modbus ASCII protocol are integrated in the series of products, users can
easily realize the seamless integration of Modbus Ethernet devices and Modbus serial devices and even multi
master and slave hybrid networks. At the same time, the user can be set up by Web or Telnet. The simple design can
not only realize the fast application, but also guarantee the application of the entire real environment.
The series of products using EMC protection design. Power has over current, over voltage protection, and can
work in rugged environment. The design supports wall mounting installation, easy to use for your projects.
1.2 Product Features
Support 1/2/4/8 serial port (RJ45 interface or terminal interface)
Support 1 port 10/100M Ethernet
300bps~115200bps baud rate and nonblocking communication
Support Modbus TCP, Modbus RTU, ModbusASCII, IP, ARP, DHCP, DNS protocol
Slave mode support 16 TCP master connections
Master mode support 32 slave TCP connection requests
Support RTU Slave, RTU Master, ASCII Slave, ASCII Master four operating modes
Support Response Timeout / Interval Timeout setting
Support ID mapping function, to achieve the management of the host ID
Support Telnet and Web, and other forms of configuration
Support IP address and MAC address filtering function
Support gateway, cross route communication
Support for cascading functions, convenient connection
IP30 grade protection, metal shell, wall mounted installation
Working temperature is -40~75℃

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Chapter 2 MODBUS Protocol Overview
2.1 Protocol Description
Modbus was originally developed for the PLC module in the application of industrial automation and
manufacturing control. It has now become one of the most common open standard protocols. When data
communication is needed, the Modbus is the only choice for the end user and the integrator. Although this protocol
is not the strongest of the existing protocols, its rare simple design not only to achieve rapid application, but also to
ensure the flexibility of all practical industrial environment applications. The communication mode of Modbus can
be ASCII, RTU or TCP/IP. GW110X series products are supported by serial (Modbus/RTU or Modbus/ASCII) and
Modbus (Modbus/TCP) protocol communication, or Modbus serial devices based on TCP/IP network.
Modbus/RTU and Modbus/ASCII protocol defines how to query 1 or more "slave devices", and write
real-time data from RS-232, RS-422, or RS-485 serial data communications. The simple design not only can realize
the fast application, but also ensures the flexibility of the application of the entire real industrial environment.
In the Modbus network communication, the protocol defines how each controller knows its device address, the
information received, and decides what action to take, and extracts all data or other information contained in the
information. If you need to reply, the controller will write the reply message and send out the Modbus protocol.
When the controller uses “master device-slave device” mode to communicate, there is only one device (master
device) which can initiate the inquiry command. Other devices (slave device) to reply to the required data to the
master device, or the action required to respond to the request. Typical master devices include the main processor
and the programming panel. Typical devices include programmable controllers.
The master device may transmit information to the slave device alone or send a broadcast message to all from
the slave device. On the other hand, the slave device can respond to the command of the master device alone. The
master device broadcast information does not need to reply.
The master device of the Modbus protocol is asked to have a fixed format, which includes a device (or
broadcast) address, a function that defines a request for action, encoding, any sending data, and an error inspection
area. The reply information from the device is also written in Modbus protocol, which includes the confirmation of
the action area, any reply data and the error inspection area. An error occurs when receiving a message, or from an
action that is unable to respond to the device, the device will write an error message and send it as a reply message.

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The basic system framework is as follows:
(Modbus basic framework Figure 2.1.1)
(Modbus basic framework Figure 2.1.2)

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2.2 Modbus RTU
Modbus/RTU and Modbus/ASCII protocol defines how to query 1 or more "slave devices", and write real-time data
from RS-232, RS-422, or RS-485 serial data communications.
When using RTU mode, the information of every 8 bytes containing two 4bit hexadecimal character. The main
advantage of the model is the same baud rate the larger the character density makes the number of the data output is
more than the ASCII mode. However, each message must be in continuous transmission.
2.3 Modbus ASCII
When using ASCII mode, the information of every 8 bytes to 2 ASCII characters to send. The main advantage of
the ASCII model is that the characters can allow up to 1 second without a mistake.
Comparison between Modbus RTU and Modbus ASCII
type RTU ASCII
Encoding system
8 bit binary Hexadecimal
The information in each ASCII character
contains 2 hexadecimal characters
The information in each ASCII character
contains 1 hexadecimal characters
Each byte
1 start bit 1 start bit
8 data bits 7/8 data bits
1 parity bits
No parity check No parity check
If there is a parity check for 1 stop bits If there is a parity check for 1 stop bits
If there is no parity check for 2 stop bits If there is no parity check for 2 stop bits
Error check CRC LRC
2.4 Modbus TCP
As a new extension of Modbus/TCP, the Modbus/RTU protocol defines how Modbus/RTU information is
transmitted via TCP/IP network in the network or through the TCP/IP network. Modbus/TCP is as simple and
flexible as before Modbus/RTU. The Modbus/TCP protocol is determined by the Modbus request or response. That
is, the Modbus request or the corresponding data to the TCP architecture, the Modbus/TCP protocol has a 6 byte
header field.
Modbus/TCP can carry out Modbus information transmission in the TCP/IP protocol. Modbus/TCP is the most
suitable for the PLC or I/O module and other simple domain or I/O network connection.

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Chapter 3 Hardware Description
3.1 Interface Description
3.1.1 Power Input
V+ V-
The rear panel of the series product is provided with 2 bits power input terminals for DC power supply and the
input range is 9~48VDC.
3.1.2 Communication Interface
The series products support 1 Ethernet ports and 1/2/4/8 serial ports (RJ45 or terminal interface).
10/100Base-T(X) Ethernet port
The 10/100BaseT(X) ports located on GW110X series front panel. Pin definition of the RJ45 port as shown in
the following figure. Connect by UTP or STP. The connect distance is not more than 100m. 100Mbps is used 120Ω
of UTP. 10Mbps is used 120Ω of UTP 3, 4, 5.
RJ45 port support automatic MDI/MDI-X operation. It connects the PC, Server, Converter and HUB by
straight–though cable wiring. Pin 1, 2, 3, 6 Corresponding connection in MDI. 1→3, 2→6, 3→1, 6→2 are used as
cross wiring in the MDI-X port of Converter and HUB. 10Base-T is used in MDI/MDI-X, the definition of Pin in
the table as below.
Note：“TX±” transmit data±, “RX±” receive data±, “—”not use
pin
MDI signal
MDI-X signal
1
TX+
RX+
2
TX-
RX-
3
RX+
TX+
6
RX-
TX-
4, 5, 7, 8
—
—
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MDI (straight-through cable)
MDI-X (Cross over cable)
MDI/MDI-X auto-adapt function can let user did not think about the type of Ethernet cable when use
GW110X series 10/100M Ethernet interface, the series product can connect device through straight-through cable
or cross over cable directly.
Serial port connection
GW1101 series RS-485/422 port provides 5 bit industrial terminal block. The PIN defines is as follows:
PIN RS-485 PIN define RS-422 PIN define
1
D+
T+
2
D-
T-
3
GND
GND
4
--
R+
5
--
R-
GW1102 series RS-485/422 port provides 5 bit industrial terminal block. The PIN defines is as follows:
Serial port PIN RS-485 PIN define RS-422 PIN define
COM2
1
--
R-
2 -- R+
3
GND
GND
4 D- T-
5
D+
T+
COM1
6
--
R-
7
--
R+
8
GND
GND
9
D-
T-
10
D+
T+

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GW1104/GW1108 series RS-485/422 provides separation distance 3.81mm, 4 bit industrial terminal block. The
PIN defines is as follows:
GW110X series RS232 adopts RJ45 connector, the PIN defines is as follows:
3.1.3 LED Indicator
The LED indicator on the front panel of Modbus gateway series can indicate the running system and the operation
status, which makes it easy to find and solve problems, the specific meaning of indicator are shown in the table.
System LED statues
LED Indicator Description
PWR ON Power is connected/Function natural
OFF Power is disconnected or function nu-natural
RUN
Flashing System Running steadily
OFF System did not run or running un-steadily
ON System Running un-steadily
LINK
ON Ethernet port connect successfully
Flashing Ethernet port has data transmission
OFF Ethernet port connect unsuccessfully
RX（1/2/4/8）OFF None data receive
ON/Flashing In receiving data
TX（1/2/4/8）OFF None data transmit
ON/Flashing In transmitting data
PIN RS-485 PIN define RS-422 PIN define
1 D+(A)
T+
2 D-(B)
T-
3 / R+
4 /
R-
PIN
PIN define
Description
1
TXD
Transmit data
2 RXD Receive data
3
CTS
（
Optional
）
Clear to send
6
RTS
（
Optional
）
Request to send
8
GND
Signal ground
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3.1.4 Factory default
GW1101/GW1102 series provide DIP switch for factory default.
Top panel provide 4 bit DIP switch to set function(ON is effective), 1, 3, 4 is hold, 2 is factory default, if you
change the DIP switch statue, please power off and power on.
GW1104/GW1108 series provide reset button for factory default.
DEF: restore the factory settings button, press and hold the DEF button, disconnect the power supply and then give
the device to power up, continue for about 5 seconds to restore the factory settings.
3.1.5 Device installation
Before installation, confirm that the work environment meet the installation require, including the power needs and
abundant space.
1. Avoid in the sunshine, keep away from the heat fountainhead or the area where in intense EMI.
2. Examine the cables and plugs that installation requirements.
3. Examine whether the cables be seemly or not (less than 100m) according to reasonable scheme.
4. Screws, nuts, tools need to be prepared in advance of your own.
5. Power requirements: 9~48VDC
6. Environments: Working temperature: -40～75℃
Working humidity: 5%～95%
GW1101/GW1102 series：

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GW1104/GW1108 Series：
Wiring Requirements
Cable laying need to meet the following requirements:
1. It is needed to check whether the type, quantity and specification of cable match the requirement before
cable lying.
2. It is needed to check the cable is damaged or not, factory records and quality assurance booklet before
cable lying.
3. The required cable specification, quantity, direction and laying position need to match construction
requirements, and cable length depends on actual position.
4. All the cable cannot have break-down and terminal in the middle.
5. Cables should be straight in the hallways and turning.
6. Cable should be straight in the groove, and cannot beyond the groove in case of holding back the inlet and
outlet holes. Cables should be banded and fixed when they are out of the groove.
7. User cable should be separated from the power lines. Cables, power lines and grounding lines cannot be
overlapped and mixed when they are in the same groove road. When cable is too long, it cannot hold down
other cable, but structure in the middle of alignment rack.
8. Pigtail cannot be tied and swerved as less as possible. Swerving radius cannot be too small (small swerving
causes terrible loss of link). Its banding should be moderate, not too tight, and should be separated from
other cables.
9. It should have corresponding simple signal at both sides of the cable for maintaining.

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3.2 Appearance and Dimension
Appearance:
GW1101-1D (RS-232)-P (9~48VDC) GW1101-1D (RS-485)-P (9~48VDC)
GW1102-2D (RS-232)-P (9~48VDC) GW1102-2D (RS-485)-P (9~48VDC)
GW1104-4DI (RS-485)-P (9~48VDC) GW1104-4D (RS-232) - P (9~48VDC)
GW1108-8DI (RS-485) –P (9~48VDC) GW1108-8D (RS-232) – P(9~48VDC)

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Dimension （Unit: mm）
GW1101 series:
（RS-232）（RS-485/422）
GW1102 series:
（RS-232）（RS-485/422）

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GW1104 series product structure size (Length * Width * High) is the same, only the interfaces are not the same:
GW1108 series product structure size (Length * Width * High) is the same, only the interfaces are not the same:

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Chapter 4 Packing List
The first time use this product, please check the packaging is intact or not and the attachment is complete or not at
first.
Item Quality
MODBUS Gateway Device 1pcs
User manual 1pcs
CD 1pcs
Warranty card 1pcs
Certificate of quality 1pcs

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Chapter 5 Telnet Management Function
The product can access, configuration and management through Telnet, the next will be a brief introduction to the
function. For more information, please check “GW110XT series CLI user manual”.
5.1 Configuration through Telnet
Terminal device use telnet connect to GW110X series through PC, the requirements are as follows:
1. The IP address of GW110X series, can get it by search or modify (Use IP command under the system
management view);
2. If PC and GW110X in the same local area network, the IP address must in a same network segment, otherwise,
PC and GW110X must cross-router.
If satisfied these two requirements, can use telnet access to GW110X series, and then configure the GW110X.
1）Establish configuration environment, just connect PC’s Ethernet port connect to GW110X’s Ethernet port
through Local area network
2）Before access GW110X series through Telnet, need to input“Telnet + Space + GW110X’s IP address”for
checking, Figure 5.1.1 as follows:
（Figure 5.1.1）
3）Hit “Enter”, checkout successful and till PC show “Please input hostname and password”, ask user to input
user name and password, default is admin, figure 5.1.2 as follows:
（Figure 5.1.2）

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4）Use command to configure GW110X series and check the running statues, if need help, please input“?” at any
time. Specific configuration command, please reference“GW110X series CLI user manual”.
5.2 How to modify the PC’s IPaddress
When access GW110X series through WEB, If PC and GW110X in the same local area network, the IP address
must in a same network segment, otherwise, PC and GW110X must cross-router. When modify PC’s address,
please make sure PC and GW110X series in a same local area network, please reference the operation step as
follows:
Control panel->Network connection->Local area connection->Properties->Internet protocol（TCP/IP）
GW110X series default IP address is: 192.168.1.254, configure PC’s IP address to: 192.168.1.X (X is a number
except 254), after modify the PC’s IP address, then we can use the default IP address: 192.168.1.254, then we can
access and configure GW110X series through WEB.
Specify Windows system operates as follows:

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This configuration example did not use “Advanced” button. If use this advanced configuration function, can let a same
network card have some false IP address, then we can access GW110X series and did not modify the original IP address, but
windows cannot deal with correctly in IGMP and IEEE 802.1X. Unix system did
not have this problem, please note it when
you use advanced function
Chapter 6 WEB Management Function
GW110X series have WEB server inside, you can manage and maintenance GW110X series directly perceived
through the senses.
6.1 Preparing configuration
1. Requirements of PC
1). Install operate system (Like as Windows XP/2000)
2). Install network card
3). Install Web browser (Microsoft IE6.0 or higher version)
4). Install and start TCP/IP protocol
2. Establish correct network configuration
GW110X series default IP address: 192.168.1.254, subnet mask: 255.255.255.0, if configure in local area,
please make sure IP address configuration in a same subnet network before access the configuration view（Please
reference “Figure 6.5.1”to check IP address configuration method）. If configure remote, PC and GW110X
series must reach by cross-router.
How to access Web Server
Open the Browser, input GW110X default IP address in URL, after hit “Enter”, you will see the figure 6.1.1
as follows, point put user input user name and password, default user name and password are “admin”, if input
incorrect, Web server has 3 time to input, if all incorrect, Browser will show“Access denied”. User must refresh the
page and input correct user name and password. Please change the user name and password when you log in at first
time. Please contact our service center if you have any other problems.
(Figure 6.1.1)