ABLELink ABLELink MB5000 Series User manual

ABLELink®
Modbus Gateway
MB5000 Series
User’s Manual
Version 1.1
Updated in March, 2010
TEL: [phone]
FAX: [phone]
http://www.atop.com.tw

User manual Version 1.0
Modbus Gateway
Table of Contents
Table of Contents...................................................................................................................................... 2
Introduction .............................................................................................................................................. 4
Features .................................................................................................................................................... 5
Specifications ........................................................................................................................................... 6
Hardware Diagram.................................................................................................................................... 7
Diagram.................................................................................................................................................7
2-Port Hardware Diagram................................................................................................................... 7
4-Port Hardware Diagram................................................................................................................... 7
Pin Definitions ......................................................................................................................................8
Power Pin Definitions ......................................................................................................................... 8
2-Port Power Pin Definitions (DC)...................................................................................................8
Ethernet Port Pin Definitions (RJ45) ................................................................................................... 8
Serial Port Pin Definitions................................................................................................................... 9
2-Port and 4-Port Pin Definitions (DB9) .......................................................................................... 9
Configuration and Management............................................................................................................. 10
Connecting to the Setup Page ........................................................................................................... 10
System information............................................................................................................................ 11
Login ................................................................................................................................................... 12
Port information.................................................................................................................................. 13
Port overview ................................................................................................................................... 13
Port .................................................................................................................................................. 14
Parameter .................................................................................................................................... 14
Serial Device Mode...................................................................................................................... 15
Miscellaneous..................................................................................................................................... 20
Basic settings................................................................................................................................... 20
Advance settings.............................................................................................................................. 21
Log setting ................................................................................................................................... 21
Maintenance ................................................................................................................................ 21
Network Settings ................................................................................................................................ 23
Log ...................................................................................................................................................... 24
System log ....................................................................................................................................... 24
Communication log........................................................................................................................... 24
Warm Start .......................................................................................................................................... 27
Reboot................................................................................................................................................. 28

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Configuration Examples......................................................................................................................... 29
Example 1: Serial Port to Slave Device ............................................................................................. 29
Port1 settings: .................................................................................................................................. 29
Configure the port parameters: ..................................................................................................... 29
Port1 “Serial Device Mode” setup................................................................................................. 30
Port2 settings: .................................................................................................................................. 31
Configure the port parameters: ..................................................................................................... 31
Port2 “Serial Device Mode” setup................................................................................................. 32
Example 2: Serial Port to Master Device ........................................................................................... 33
Port1 settings: .................................................................................................................................. 34
Configure the port parameters: ..................................................................................................... 34
Port1 “Serial Device Mode” setup................................................................................................. 34
Port2 “Serial Device Mode” setup................................................................................................. 35
Example 3: Modbus Gateway to Modbus Gateway Direct Link........................................................ 36

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Modbus Gateway
Introduction
Modbus is an industry adopted communication protocol based on RTU, ASCII, and TCP protocols for various
applications; these three protocols are commonly used by hardware equipments in the industry, such as
DCS, PLC, HMI, power load measurement, various sensor and measuring instruments. The Modbus
Gateway is capable of implementing the Modbus environment between different hardware interfaces,
thereby streamlining the process of management and application.
Diverse Hardware Infrastructure
Modbus Gateway supports the four most commonly used hardware communication interfaces, RS232,
RS485, RS422, and Ethernet. The simple-to-use configuration software provided with Modbus Gateway can
quickly modify the hardware interface to use, and easily switch to the existing hardware communication
infrastructure.
Switching between Modbus Protocols
Modbus Gateway supports the standard Modbus protocol and is capable of converting any Modbus
protocols between Modbus TCP, Modbus RTU, and Modbus ASCII for all supported hardware interfaces, not
just limited to converting Modbus TCP into Modbus RTU/ASCII.
Modbus ID Routing
Modbus Gateway is not only capable of hardware and protocol conversions, and when a Modbus ID conflict
occurs the Modbus Gateway also supports ID routing to the existing Modbus hardware.
Modbus Gateway, Simple Integration for Complex Configurations
Modbus Gateway supports various types of hardware communication interfaces, Modbus protocol
conversion, and Modbus ID routing. Therefore the Modbus Gateway can integrate your existing and complex
Modbus hardware configuration into a simple network that can be easily managed.

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Modbus Gateway
Features
 Supports the four most commonly used hardware communication interfaces in the industry, RS232,
RS485, RS422, and Ethernet.
 Easy-to-use webpage setup for RS232, RS485, RS422.
 Effortlessly convert between Modbus TCP, Modbus RTU, and Modbus ASCII.
 Hardware connections through serial and Ethernet ports for even easier integration.
 No software installations necessary; simply setup configurations through the Internet browser (e.g.
Internet Explorer).
 Provides up to 16 ports for connectivity.
 Provides 2 Ethernet interfaces.

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Modbus Gateway
Specifications
Specifications
Model MB5302 (2-Port) MB5404 (4-Port)
System
CPU RISC 150MHZ Processor with
MMU
32-bit 266MHz RISC Processor
with MMU
Flash 16M Bytes 32M Bytes
RAM 64M Bytes 128 M Bytes DDR
EEPROM 2K Bytes 8K Bytes
Watchdog Hardware & Software built-in
Ethernet
Compliance IEEE802.3
Port 2-port
Transmission
Rate
10/100M Auto-detection
Connector RJ-45
Auto MDI/MDI-X No
Serial
Interface RS232/422/485 software selectable
Ports 2-port 4-port
Baud Rate 110bps-921Kbps
Parity None, Odd, Even, Mark, Space
Data Bits 5, 6, 7, 8
Stop Bits 1, 2
Flow Control None, Software: Xon/Xoff, Hardware: RTS/CTS
Protection 15KV ESD 15KV ESD
Connector 9-pin D-Sub 9-pin D-Sub
Power
Input DC 9 - 30V
Consumption Max. 6W Max. 8.5W
Approval
EMC FCC Class A, CE Class A
Environment
Operating 0°C-60°C( 32º-140ºF ) 0°C-60°C ( 32º-140ºF )
Storage -40º-85ºC ( -40º-185ºF ),
5 - 95%RH
-40º-85ºC ( -40º-185ºF ),
5 - 95%RH
Dimension
W x H x D (mm) 99 x 35 x 108.5 197 x 37 x 112
Software
Configuration Web page
Support protocol TCP/IP, HTTP, Telnet, Modbus
Option Accessories
Power Adapter US315(US / EU)
AC100-240V / DC12V 1.25A ;
3 pins 5.08mm terminal block,
1A25F (US / EU):
AC100-240V / DC12V 1.25A ;
DC Jack lockable

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Hardware Diagram
Diagram
2-Port Hardware Diagram
4-Port Hardware Diagram

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Pin Definitions
Power Pin Definitions
2-Port Power Pin Definitions (DC)
DC 9V - DC 30V
Ethernet Port Pin Definitions (RJ45)
Pin Signal
1 TX+
2 TX-
3 RX+
4
5
6 RX-
7
8

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Serial Port Pin Definitions
2-Port and 4-Port Pin Definitions (DB9)
RS-232 RS-422 RS-485
Pin Signal Pin Signal Pin Signal
1 DCD 1 NC 1 NC
2 RXD 2 TXDB (+)
2 NC
3 TXD 3 RXDB(+)
3 DataB (+)
4 DTR 4 NC 4 NC
5 GND 5 GND 5 GND
6 DSR 6 NC 6 NC
7 RTS 7 RXDA (-)
7 DataA (-)
8 CTS 8 TXDA (-)
8 NC
9 NC 9 NC 9 NC

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Modbus Gateway
Configuration and Management
Connecting to the Setup Page
There are two methods of connecting to the Modbus Gateway Configuration and Management webpage:
The first method is to use the included software tool (Devicevw.EXE) and directly select the IP address then
Click the “Browser” button. The software tool will use the default browser to open the setup page.
The second method is to launch the browser and then enter the IP address of the Modbus Gateway in the
address bar, e.g. http://192.168.50.100
The System Information page will be displayed after connecting to the Modbus Gateway homepage. Please
refer to the following for detailed descriptions of each page.

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System information
The menu tree to the left side of the page contains the configuration and management options. The Modbus
Gateway version is to the upper right corner and the system information is at the right hand side. Each field is
briefly described as below:
Station Name Name of this Modbus Gateway
Model Name Model Name of this Modbus Gateway
Serial No. Serial Number of this Modbus Gateway
Firmware version Version of this Modbus Gateway
LAN1 IP/Netmask of the first LAN interface
MAC1 MAC address of the first LAN interface
LAN2 IP/Netmask of the second LAN interface
MAC2 MAC address of the second LAN i
nterface
Running Process Number of Modbus Gateways running
Current time Current time of this Modbus Gateway
Up Time System uptime of this Modbus Gateway

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Login
If nothing is modified after connecting to the Modbus Gateway, the user does not have to be logged in. To
make modifications to the Modbus Gateway, the user must first login beforehand or at the system prompt
after modifications are made. Any modifications made will only be saved after the user is logged in (by login
beforehand or at system prompt).
Default user name and password: (Note: Case sensitive.)
Username: admin
Password: 12345

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Port information
The Port Information menu can browse through and modify the settings of all ports, including [Port overview]
and [Port] information.
Port overview
Port overview will list the current settings of all ports on Modbus Gateway, while some detailed port
information will not be displayed here and is listed under the port setup details. As below, this is a 4-Port
Modbus Gateway and the Port overview menu lists the current settings of all ports.

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Port
[Port] will configure the basic parameters and connection information to the Modbus Gateway. There are two
submenus [Parameter] and [Serial Device Mode] under the [Port] menu.
Parameter
Parameter contains the following basic parameters for the port: Hardware Mode, Baud Rate, Data Bits, Parity,
Stop Bits, and Flow Control.
Note: After modifying the settings for the port, the Modbus Gateway has to be rebooted to apply the
change. There are four methods to reboot the Modbus Gateway:
1. Click “Apply” on the webpage after changes are made.
2. Click the “Warm Start” function menu to the left.
3. Click the “Reboot” function menu to the left.
4. Cutoff the power and then recover the power.
After entering the setup interface the available common options are as below:
1. Hardware Mode
Transfer mode for the port. Options include RS232, RS422, and RS485.
2. Baud Rate
Transfer speed for the port. Applicable range is 110-921600.
3. Data Bits
Usable bits for each unit of data during the transfer. Options include 5, 6, 7, and 8.
4. Parity
Parity checks. Options include None, ODD, and EVEN.
5. Stop Bits
The bits to use when stopping the transfer. Options include 1 and 2.
6. Flow Control
Flow control setup. Options include None, RTS/CTS, and XON/XOFF.

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Serial Device Mode
Modbus devices are commonly labeled as Master and Slave and therefore, the Serial Device Mode of the
Modbus Gateway is also labeled as such modes, Master and Slave. When the port is set to Master, then the
Ethernet will have to be set as Slave; vise versa, when the port is set to Slave, then the Ethernet will have to
be set as Master. The following will explain the two configurations, (I) “Serial Device Mode” as “Slave” and
(II) “Serial Device Mode” as “Master”.
(I) “Serial Device Mode” as “Slave”
Figure 1.
Configuration page for “Serial Device Mode” as “Slave”
This page is split into three sections, (1) Port-mode setting, (2) Master-setting list, and (3) Action area.
According to the selected “Serial Device Mode”, the above-mentioned contents will differ.
(1) Port-mode setting: There are three options for the port, “Serial Device Mode”, “Data Mode”, and
“Response Timeout”.
“Serial Device Mode”: Includes [Master] and [Slave] modes. Current description is for the
“Serial Device Mode” under slave mode.
The Modbus Gateway “Serial Device Mode” will be configured based on the device connected to the
port. For example, Port1 connected device is in slave mode (mainly provides data access for Master)
then “Serial Device Mode” will be set to slave; vise versa, if the connected device is in master mode
(mainly for accessing data from slave) then “Serial Device Mode” will be set to master. Note: The
mode changes will show up on the configuration page.
“Data Mode”: Includes RTU, ASCII, and TCP Modbus communication protocols.
The Modbus Gateway “Data Mode” communication protocol will be configured based on the device
Serial Port as “Slave”
Ethernet as “Master”

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connected to the port. For example, Port1 connected device uses the Modbus RTU communication
protocol then “Data Mode” will be set to RTU; vise versa, if the connected device uses Modbus ASCII
then “Data Mode” will be set to ASCII. Note: Modbus Gateway also supports TCP mode for the
“Serial Device Mode” at the port.
“Response Timeout”: When the connected device is in slave mode will this option be required.
This option is to set the timeout period for a response from the slave port connected device, unit in
microsecond.
(2) Master-setting list: If the “Serial Device Mode” is set to slave, then this list will be the master list for
the Ethernet port; vise versa, if the “Serial Device Mode” is set to master, then this list will be the
slave list for the Ethernet port.
(3) Action area: If the “Serial Device Mode” is slave then this includes the master configuration page for
the Ethernet port; vise versa, if the “Serial Device Mode” is master then this includes the slave
configuration page for the Ethernet port. The following description is for “Serial Device Mode” set to
“Slave”.
“Serial Device Mode” as “Slave” setup page: As in Figure 1. The Master setup (Client) at the left
and ID routing-table to the right.
Master setup (Client): Includes the settings “Gateway TCP Port”, “Network and Netmask”, and
“Data Mode”.
“Gateway TCP Port”:
Modbus Gateway provides client connection to activate the TCP Port service.
“Network and Netmask”:
Combination of “Network” and “Netmask” to configure the range of
client IP to Modbus Gateway. The system does not provide shorthand
description of the Network/Netmask (e.g. 192.168.100.0/24).
Example 1: Provide any IP that the client can connect to the Modbus
Gateway, then enter 0.0.0.0 for the “Network” with 0.0.0.0 for the
“Netmask”.
Example 2: Provide 192.168.100.1-192.168.100.63 range for the client to
connect to Modbus Gateway, with 192.168.100.0 for the “Network” and
255.255.255.192 for the “Netmask”.
Example 3: Provide 192.168.100.1-192.168.100.255 range for the client
to connect to Modbus Gateway, with 192.168.100.0 for the “Network”
and 255.255.255.0 for the “Netmask”.
Example 4: To limit to a single IP (e.g. 192.168.100.31) for the client
connection, enter 192.168.100.31 for the “Network” with
255.255.255.255 for the “Netmask”.
“Data Mode”: Includes RTU, ASCII, and TCP modes.
The “Data Mode” here configures the communication protocol for the master device,
and must be set to the communication protocol used by the remote Ethernet-master.
The “Data Mode” listed here is independent to the “Data Mode” in the Port-mode
setting. In other words, the master and slave can be configured with different
communication protocols, and the Modbus Gateway will perform the conversion
between different data types.

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ID routing-table: Master ID and Slave ID modes.
Master ID: The Master ID is a virtual ID and each field must not duplicate with another.
Slave ID: Slave ID is the applicable ID range provided for the slave device.
As indicated above, the Modbus Gateway uses 3 ports with each port connecting to
10 serially connected Modbus slave devices ID range 1-10. During setup, the Master
ID 1-10 corresponds to Slave ID 1-10, Master ID 11-20 corresponds to Slave ID 11-20,
and Master ID 21-30 corresponds to Slave ID 21-30. When master sends the request
for ID 1, 11, and 21, the Modbus Gateway will automatically convert to ID1 and send
the request to the corresponding slave device, subsequently the slave response will
also be automatically be converted to the corresponding 1, 11, and 21 replying to
master.
Master Request
ID 1-30
Master ID 1-10
to Slave ID 1-10
Master ID 11-20
to Slave ID 1-10
Master ID 21-30
to Slave ID 1-10
Slave serial ID 1-10 Slave serial ID 1-10 Slave serial ID 1-10

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(II) “Serial Device Mode” as “Master”
Figure 2.
Configuration page for “Serial Device Mode” as “Master”
This is similar to the slave configuration including three parts, (1) Port-mode setting, (2) Slave-setting list,
and (3) Action area.
(1) Port-mode setting: There are to options for the port, “Serial Device Mode” and “Data Mode”.
“Serial Device Mode”: Includes [Master] and [Slave] modes. Current description is for the
“Serial Device Mode” under master mode.
The Modbus Gateway “Serial Device Mode” will be configured based on the device connected to
the port. For example, Port1 connected device is in master mode (mainly for accessing data from
slave) then “Serial Device Mode” will be set to master; vise versa, if the connected device is in
slave mode (mainly provides data access for Master) then “Serial Device Mode” will be set to
slave.
“Data Mode”: Includes RTU, ASCII, and TCP Modbus communication protocols.
The Modbus Gateway “Data Mode” communication protocol will be configured based on the device
connected to the port. For example, Port1 connected device uses the Modbus RTU
communication protocol then “Data Mode” will be set to RTU; vise versa, if the connected device
uses Modbus ASCII then “Data Mode” will be set to ASCII. Note: Modbus Gateway also
supports TCP mode for the “Serial Device Mode” at the port.
(2) Slave-setting list: If the “Serial Device Mode” is set to slave, then this list will be the master list for
the Ethernet port; vise versa, if the “Serial Device Mode” is set to master, then this list will be the
slave list for the Ethernet port.
(3) Action area: If the “Serial Device Mode” is slave then this includes the master configuration page for
the Ethernet port; vise versa, if the “Serial Device Mode” is master then this includes the slave
configuration page for the Ethernet port. The following description is for “Serial Device Mode” set to
“Master”.
“Serial Device Mode” as “Master” setup page: As in Figure 2. the Slave setup (Server) and ID
routing table.
Slave setup (Server): Includes the settings “Slave IP”, “Slave TCP Port”, “Data Mode”, “Response
Timeout”, and “Master ID and Slave ID”.
Serial Port as “Master”
Ethernet as “Slave”

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“Slave IP”:
IP address for connecting to remote slave device.
“Slave TCP Port”:
TCP port for connecting to remote slave device.
“Data Mode”: Includes RTU, ASCII, and TCP modes.
The “Data Mode” here configures the communication protocol for the
slave device, and must be set to the communication protocol used by the
remote Ethernet-slave. The “Data Mode” listed here is independent to the
“Data Mode” in the Port-mode setting. In other words, the master and
slave can be configured with different communication protocols, and the
Modbus Gateway will perform the conversion between different data
types.
“Response Timeout”:
Sets the response timeout from the remote Ethernet-slave device, unit in
microsecond.
ID routing table: Master ID and Slave ID modes.
Master ID: The Master ID is a virtual ID and each field must not duplicate with
another.
Slave ID: Slave ID is the applicable ID range provided for the slave device.
The concept is identical to the setup for “ID routing table” in the “Serial Device
Mode” as “Slave” configuration page.
After configuring the Master ID and Slave ID, click “Add ID Set” to add to the buffer,
then confirm the range of Slave ID click “Add Set” to add to the Slave-setting list.
After all slave devices for the port have been configured, click “Commit Setting” to
save to the Modbus Gateway. To immediately apply the changes, click the “Apply”
button as below; otherwise, the “Commit Setting” button will only save the settings
to the Modbus Gateway configuration file.

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Miscellaneous
The miscellaneous menu includes the [Basic settings] and [Advanced settings] for the Modbus Gateway.
Basic settings: Configure the “Modbus Gateway Station Name”, “Modbus Gateway System Time”, and
“Username and Password” (Login to Modbus Gateway webpage).
Advance settings: Enable and disable the communication log and configuration file of the Modbus Gateway.
Basic settings
“Station Name setting”: Station name of the Modbus Gateway. When there is a plurality of Modbus Gateway
devices on the network, this is used to identify the different Modbus Gateways. For example, the station
name [Fab 3F-1] is the first device for Fab 3F.
“Time setting”: Adjust the system time of the Modbus Gateway.
“Username setting”: Username and password for logging in to the webpage.
Station Name setting: Enter the station name and click “Modify Station” to confirm the name change.
Time setting: Time format in YYYY/MM/DD hh:mm:ss, and click “Modify Time” to confirm the time changes.
Username setting: For security reasons, the username and password has to be logged in before modifying
the account password. After Username, Password, New Username, and New Password are filled in, click
“Modify User” to confirm the changes.
Default username and password: (Note: Case sensitive.)
Username: admin
Password: 12345