Industrial Ethernet serial Gateway (Modbus RTU/ASCII / Modbus

Industrial Ethernet serial Gateway (Modbus RTU/ASCII / Modbus
Industrial Ethernet serial Gateway
(Modbus RTU/ASCII / Modbus TCP)
ES
User Manual
REV 1.2
SiboTech Automation Co., Ltd
Technical Support: +86-21-5102 8348
E-mail: support@sibotech.net
ES
Industrial EtherNet Serial Gateway
User Manual
Table of Contents
1 About This Document ............................................................................................................................................. 4
1.1 General......................................................................................................................................................... 4
1.2 Important User Information ......................................................................................................................... 4
2 About the Gateway ................................................................................................................................................. 4
2.1 Function ....................................................................................................................................................... 4
2.2 Features ........................................................................................................................................................ 5
2.3 Technical Specifications .............................................................................................................................. 6
2.4 Attention ...................................................................................................................................................... 6
3 Hardware Description ............................................................................................................................................. 7
3.1 Appearance .................................................................................................................................................. 7
3.2 Indicators ..................................................................................................................................................... 8
3.3 DIP Switches................................................................................................................................................ 9
3.4 Interface ....................................................................................................................................................... 9
3.4.1 Power Interface ................................................................................................................................. 9
3.4.2 Ethernet Interface............................................................................................................................ 10
3.4.3 Serial Interface .................................................................................................................................11
4 Instructions of Configuration Software ................................................................................................................ 14
4.1 Note Before Configuration ........................................................................................................................ 14
4.2 Search Equipment ...................................................................................................................................... 15
4.2.1 Search All Equipments of Ethernet ................................................................................................. 15
4.2.2 IP Search ......................................................................................................................................... 16
4.3 Configuration ............................................................................................................................................. 18
4.3.1 Mode Selection ............................................................................................................................... 19
4.3.2 Ethernet Parameters ........................................................................................................................ 20
4.3.3 Serial Parameters ............................................................................................................................ 21
4.3.4 ID Mapping (Advanced Parameters) .............................................................................................. 22
4.3.5 Modbus Parameters (Advanced Parameters) .................................................................................. 23
4.3.6 Priority Control (Advanced Parameters) ........................................................................................ 24
4.3.7 Advanced Parameters ...................................................................................................................... 25
4.4 OK, Cancel and Help ................................................................................................................................. 26
4.5 Locate ........................................................................................................................................................ 28
4.6 Remote Reset ............................................................................................................................................. 29
4.7 New (Offline Configuration) ..................................................................................................................... 30
4.8 Open........................................................................................................................................................... 31
4.9 Save ........................................................................................................................................................... 32
4.10 Communication test ................................................................................................................................. 33
5 Typical Application ............................................................................................................................................... 35
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5.1 Multiple Ethernet masters connect multiple serial slaves .......................................................................... 35
5.2 Multiport serial masters connect multiple Ethernet slaves ........................................................................ 36
5.3 Serial master connect serial slave via Ethernet .......................................................................................... 36
6 Installations ........................................................................................................................................................... 38
6.1 Mechanical Dimensions............................................................................................................................. 38
6.2 Installation ................................................................................................................................................. 38
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Industrial EtherNet Serial Gateway
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1 About This Document
1.1 General
This document describes every parameters of the ES series gateway and provides using methods and some
announcements that help users use the gateway. Please read this document before using the gateway.
Related products include:
ENB-302MT, ENB-301MT and so on.
More information about these products, please visit: http://www.sibotech.net/En/, or dial technical
support line: +86-21-5102 8348.
1.2 Important User Information
The data and examples in this document can not be copied without authorization. SiboTech maybe
upgrades the product without notifying users.
is the registered trade mark of SiboTech Automation Co., Ltd.
The product has many applications. The users must make sure that all operations and results are in
accordance with the safety of relevant field, and the safety includes laws, rules, codes and standards.
2 About the Gateway
2.1 Function
ES series gateway is a Modbus gateway which can achieve the interconnection between Modbus TCP
devices and serial devices. Through the Modbus TCP protocol and Modbus RTU/ASCII protocol conversion of
the product, users can easily interconnect Modbus devices. The ES series gateway supports dual Ethernet ports,
built-in Switch; the serial side support single serial port / dual serials / four serials. Each port supports both
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Industrial EtherNet Serial Gateway
User Manual
RS485 and RS232, but the same product can only achieve a kind of port, users can specify the port in the order
according to actual needs.
Product Type
Ethernet protocol
Serial protocol
Serial number
ES-301
Modbus TCP
Modbus RTU/ASCII
One
ES-302
Modbus TCP
Modbus RTU/ASCII
Two
ES-304
Modbus TCP
Modbus RTU/ASCII
Four
2.2 Features

Operating mode:
Modbus RTU/ASCII slave mode: Modbus TCP masters communicate with Modbus RTU/ASCII slaves
through the gateway;
Modbus RTU/ASCII master mode: Modbus TCP salves communicate with Modbus RTU/ASCII masters
through the gateway.

Dual Ethernet interfaces, built-in Switch, support cascade, can be used in a ring network, save field
connection cables and switches;

ES-301 : One independent RS485 interfaces or RS232 interfaces and 1KV electromagnetic isolation;
ES-302: Two independent RS485 interfaces or RS232 interfaces and 1KV electromagnetic isolation;
ES-304: Four independent RS485 interfaces or RS232 interfaces and 1KV electromagnetic isolation.

Ethernet 10/100M adaptive;

IP address conflict detection;

Request packet is automatically routed to the serial port ;

Support network security settings:
Limit the IP address range of clients;
Login password can be set;

Support mapping of slave ID;
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
Support debugging function;

Provide free configuration software MT-123.
2.3 Technical Specifications
[1] Slave modes: Support 4 Modbus TCP masters simultaneously communication, and can support 32
simultaneous commands request;
[2] Master modes: Support 4 different IPs or 4 Modbus TCP slaves of the different ports;
[3] Every serial interface is RS485 or RS232, half-duplex, and baud rate support: 1200, 2400, 4800, 9600,
19200, 38400, 57600, 115200 and 230400bps; parity mode support: none, odd, even, mark, space; 1 or 2 stop bits;
[4] Power supply: 24VDC (11V ~ 30V), 130mA (24VDC);
[5] Working temperature: -20 ℃ ~ 60 ℃, relative humidity: 5% ~ 95% (no condensation);
[6] Dimensions: 40mm (Width) *125mm (Height) *110mm (Depth);
[7] Installation: 35mm rail;
[8] Protection class: IP20;
2.4 Attention

To prevent stress, prevent module panel damage;

To prevent bump, module may damage internal components;

Power supply voltage control in the prospectus, within the scope of the requirements to burn module;

To prevent water, water module will affect the normal work;

Please check the wiring, before any wrong or short circuit.
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3 Hardware Description
3.1 Appearance
RS485/RS232
interface Ⅳ
RS485/RS232
interface Ⅲ
Indicators
Power interface
Ethernet RJ-45 interface
RS485/RS232
interfaceⅠ
RS485/RS232
interface Ⅱ
Notes:
1.
Above for reference;
2.
ES-302 has two serial ports : serial Ⅰ and serial II;
3.
ES-301has one serial port: serial Ⅰ.
Configuration switches
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3.2 Indicators
ES-301
Indicators
Status
Descriptions
RX
Flashing(Green)
Serial port is receiving data
TX
Flashing(Green)
Serial port is transmitting data
RX flashing(Green)
Serial port Ⅰ is receiving data
TX Flashing(Green)
Serial port Ⅰ is transmitting data
RX Flashing(Green)
Serial port Ⅱ is receiving data
TX Flashing(Green)
Serial port Ⅱ is transmitting data
Flashing(Green)
Serial port Ⅰ is receiving data
Flashing(Yellow)
Serial port Ⅰ is transmitting data
Flashing(Green)
Serial port Ⅱ is receiving data
Flashing(Yellow)
Serial port Ⅱ is transmitting data
Flashing(Green)
Serial port Ⅲ is receiving data
Flashing(Yellow)
Serial port Ⅲ is transmitting data
Flashing(Green)
Serial port Ⅳ is receiving data
Flashing(Yellow)
Serial port Ⅳ is transmitting data
Ⅰ
ES-302
Ⅱ
Ⅰ
Ⅱ
ES-304
Ⅲ
Ⅳ
Slave modes: One Modbus TCP connection has been
established at least;
Green on
ENS
ES series
SNS
ENS (Orange)
and SNS (Orange)
(Orange: Red
and green light at
one time)
Master modes: Modbus TCP connections have been
established.
Flashing(Green)
Slave modes: There is no Modbus TCP connection.
Master modes: There is Modbus TCP connection has not
been established.
Flashing(Red)
Modbus TCP connections are disconnected and no longer
exist; Obtain IP address via DHCP.
Flashing(Red)
(lasts 3 seconds)
There is Modbus TCP connection disconnected.
Green on
Serial port ready to transmit and receive data.
Flashing(Red)
Automatic routing conflict.
Red on
Equipment failure or updating firmware failed.
Simultaneously
lighten
Start status
Flash alternately
Configuration mode
Flash alternately
(lasts 3 seconds)
Using locating function
ENS always on,
SNS always off
Firmware updating mode
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3.3 DIP Switches
The 2-bit DIP switch in the bottom is used for setting operating mode of the device.
Bit 1 is mode bit, and bit 2 is function bit.
Off
On 1 2
Mode (bit 1)
Function (bit 2)
Off
Off
Off
On
Descriptions
Run mode, allowing read and write configuration data
Run mode, forbidding read and write configuration data
(configuration data protection switch )
Configuration mode, IP address is 192.168.0.10. This
On
Off
mode can only read and write data, cannot communication
between Modbus TCP and Modbus RTU/ASCII devices
On
On
Firmware update mode, IP address is 192.168.0.10. This
mode can only update firmware
Notes:
Restart ES after resetting the DIP switches and then the configuration can take effect!
3.4 Interface
3.4.1 Power Interface
ES series gateway uses a 24V DC power supply. The power interface using a 3-pin terminal (7.62mm), which
is defined as follow:
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GND
1
NC
2
24V+
3
Pin
Function
1
GND
2
NC, no connection
3
24V+
Power supply wiring is shown below:
GND
1
GND
NC
2
24V+
24V+
3
DC power: +24V
Power interface of ES
3.4.2 Ethernet Interface
Ethernet interface apply RJ-45 connector, 10/100M adaptive.
Pin
Signal Description
S1
TXD+,Transmit Data+, Output
S2
TXD-,Transmit Data-, Output
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S3
RXD+,Receive Data+, Input
S4
Bi-directional Data+
S5
Bi-directional Data-
S6
RXD-,Receive Data-, Input
S7
Bi-directional Data+
S8
Bi-directional Data-
3.4.3 Serial Interface
ES series gateway uses 3 -pin terminal (5.08mm). Optionally support RS485 or RS232.
3.4.3.1 RS232 Interface
ES series gateway support standard RS232 interfaces.
RS232 interface:
TX
1
RX
2
GND
3
Pin
Signal Descriptions
1
TX, connect with RX of user device
2
RX, connect with TX of user device
3
GND
3.4.3.2 RS485 Interface
ES series gateway support standard RS485 interfaces.
RS485 interface:
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D+
1
D-
2
GND
3
Pin
Signal Description
1
D+,RS485
2
D-,RS485
3
GND
The RS485 interface of the ES series gateway is standard, and the RS485 characteristics of the product are
shown as follows:
1. The basic characteristics of RS485 transmission technology
① Network topology: Linear bus, there are active bus termination resistors at both sides.
② Transfer rate: 300 bps~115.2Kbps.
③ Media: Shielded twisted-pair cable and also can cancel the shielding, depending on environmental
conditions (EMC).
④Site number: 32 stations per subsection (without repeater), and can up to 127 stations (with RS485
repeater).
⑤Plug connection: 3-pin pluggable terminal.
2. The main points on RS485 transmission equipments installation
①All the equipments be connected with RS485 bus;
②Subsection can be connected up to 32 sites;
③The farthest end of each bus has a termination resistor—120Ω 1/2W to ensure reliable operation of the
network.
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485+
1
485-
2
RS485 device
3
B+
AGND
RS485 interface of ES
485+
485RS485 device
…
485+
485RS485 device
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4 Instructions of Configuration Software
Take the product CD into the computer CD drive, open the CD, and install the configuration software
MT-123. You can easily follow the prompts to complete the installation. Then open the configuration software and
finish the configuration of ES series gateway. (ES-304 as an example below)
Notes:
The factory set of ES series gateway is 192.168.0.10, mask is 255.255.255.0, and gateway address is
192.168.0.1.
(When the user clicks the “Advanced” item in the “Restore Factory Settings ", the default IP address
configuration is DHCP.)
4.1 Notes Before Configuration
MT-123 is a product based on Windows platform, and used to configure parameters of ES series gateway.
Before run the software, make sure the user’s computer and the ES need to configure in the same network.
Double-click the icon to access the main interface:
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4.2 Search Equipment
Before configuration parameters of ES, the user need search the gateway using the software. The
software provides two ways to search the gateway for the user.
4.2.1 Search All Equipments of Ethernet
Click “Search equipment” button of the main interface, the software will search all of the available ES
equipments and list them in the main interface.
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4.2.2 IP Search
Click “IP search” button of the main interface will pop up a dialog box:
After entering the correct IP address, the software will search ES with the IP address in the network, and list
the information of the equipment in the main interface.
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Notes:
If the users select the “IP search”, the users need enter correct IP address or it cannot search equipment.
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4.3 Configuration
Select the equipment to be configured in the list, and the “Locate”, “Configuration”, “Remote Reset”,
“Communication Test” “New”, “Open” and “Save” buttons will become available:
Click “Configuration” button, a password authentication dialog box will pop up if the equipment has been set
with a password:
Pass the password authentication or no password and then enter configuration interface:
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4.3.1 Mode Selection
ES series gateway provides four operating modes:
Modbus RTU slave mode——Modbus TCP master communicate with Modbus RTU slave through the
gateway;
Modbus RTU master mode——Modbus TCP salve communicate with Modbus RTU master through the
gateway;
Modbus ASCII slave mode——Modbus TCP master communicate with Modbus ASCII slave through the
gateway;
Modbus ASCII master mode——Modbus TCP salve communicate with Modbus ASCII master through the
gateway.
Operating mode of ES series gateway is defined by the serial equipment. For example, when you want to
achieve the communication between Modbus TCP master device and Modbus RTU slave device, the users need
to select “RTU/ASCII slave mode” of ES series gateway.
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4.3.2 Ethernet Parameters
Ethernet parameters include: “Name”, “Assign IP Mode”, “IP address”, “Subnet mask”, “Default Gateway”,
“DNS1”, “DNS2”.
Name——Enter a name to identify the device in order to distinguish from other equipment;
Assign IP Mode——Set the device's IP address configuration mode;
IP address——Set the device's IP address;
Subnet mask——Set subnet mask of the device;
Default gateway——Set gateway address of the device;
DNS1——0.0.0.0 (currently only support 0.0.0.0)
DNS2——0.0.0.0 (currently only support 0.0.0.0)
Notes:
The name cannot have spaces, up to 20 characters, it is best not to use Chinese.
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4.3.3 Serial Parameters
Serial parameters include: “Baud Rate”, “Check Bit”, “Stop Bits”.
Baud Rate——1200、2400、4800、9600、19200、38400、57600、115200、230400bps;
Check Bit——None, Odd, Even, Mark, Space;
Stop Bits——1, 2;
Data Bits——8 (currently only support 8 data bits)
Notes:
ES-302/ES-304 gateway: You only need to set one serial port, if all serial port parameters are consistent, and
then click "Apply to All Serial Ports”, all serial port parameters can be configured to the current display serial port
parameters. Click “Display Serial Information” will pop up:
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4.3.4 ID Mapping (Advanced Parameters)
When you select RTU slave or ASCII slave mode, and only configure the basic parameters, the item cannot
be configured.
When you select RTU master or ASCII master mode, the item specify request packets being sent to which
server.
Virtual slave ID range——Ether an ID range, the left is minimum, the right is maximum (not more than
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247);
Offset of slave ID——D-value of virtual ID and actual ID (can be negative);
Actual salve ID range——By clicking “Set” button to calculate;
When select “RTU/ASCII slave mode”, users need to specify the serial port to be mapped.
When select “RTU/ASCII master mode”, users need to set “IP address of target TCP slave”, that is the IP
address of the server to be connected.
After setting “Virtual slave ID range” and “Offset of slave ID”, click “Set” button, “Actual salve ID range”
value is automatically calculated.
When click “Add” button, users can add a message in “Slave ID Mapping Table”.
When want to modify the added information, users fist select the information you want to modify, and then
set “Virtual slave ID range” and “Offset of slave ID”, click “Modify” button.
When want to delete the added information, users need select the information you want to delete, and click
“Delete” button.
Tips:
1. “Add” and “Modify” button both have “Set” function, users do not need to click “Set” then click “Add”
or “Modify”.
2. Support up to 4 groups ID mapping.
4.3.5 Modbus Parameters (Advanced Parameters)
When you select RTU slave or ASCII slave mode, and only configure the basic parameters, the item cannot
be configured.
Set “Time Interval between Characters”, “Response Timeout” and “Delay between Polls” of Modbus
RTU/ASCII in the follow interface:
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Notes:
ES-302/ES-304 gateway: You only need to set one serial port, if all serial port parameters are consistent, and
then click "Apply to All Serial Ports”, all serial port parameters can be configured to the current display serial port
parameters. Click “Display Serial Information” will pop up:
4.3.6 Priority Control (Advanced Parameters)
When you select RTU slave or ASCII slave mode, and only configure the basic parameters, the item cannot
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be configured. (ES series gateway does not support this function temporarily.)
Ethernet speed is faster than serial port, and it will cause the frame line, then you can set priority of frames.
After enabling “Priority control”, user can set, and only “RTU/ASCII salve mode” supports the function.
Specify the master——The requests of specified master are prior to transmit.
Specify the request——The requests of specified slave ID (virtual ID) or function codes are prior to transmit.
Priority of requests:
Conditions
Priority
Comply with specified the main master, and comply with specified the request
High
Comply with specified the main master, or comply with specified the request
General
Not comply with priority conditions
Low
Use method of “Add”, “Modify” and “Delete” is the same with “ID mapping”.
4.3.7 Advanced Parameters
When you select RTU slave or ASCII slave mode, and only configure the basic parameters, the item cannot
be configured.
Advanced parameters include: “New Password”, “Retype Password”, “Use default port”, “TCP Port”, “Delay
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to Start Serial”, “Restore Factory Settings”, “TCP Alive Check Time”, “Limitation of communication IP range”.
Password——After setting the password, users need to enter the password when configurate parameters
again. If users want to delete the password, just put your password is set to empty.
Restore Factory Settings——When users click the button, the previous configuration information will be
lost.
TCP Alive Check Time——When a TCP connection idle time reaches the set value, if select “Keep-Alive”,
then transmit keep-alive message; If not, then disconnect the TCP connection. The default value is 8 seconds.
Limitation of communication IP range——Set the range of communication IP to limit the client to connect to
ES.
4.4 OK, Cancel and Help
After configuring parameters, users need click “OK” button to write the configuration to the equipment. If
you do not want to write to the configuration, click “Cancel” button.
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(1) OK:
Save: Save the configuration as ". Inf " format to a local disk;
Download: Download the configuration to the device;
Save and Download: Save to the hard disk and download to the device.
(2) Cancel:
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Yes: Save to local disk and close;
No: No save but direct closure.
(3) Help:
Open the software manual.
4.5 Locate
When the user manage multiple ES gateways, they can use “Locate” function determine equipment that you
want to configure.
Users click on the “Locate” button, the ENS and SNS read indicators of the equipment in Ethernet will flash
alternately 3 seconds then the user can find it.
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4.6 Remote Reset
The function of “remote reset” is restarting the selected device. When remote reset, ENS and SNS red lights
will be on at the same time
Select the equipment in the list first, click “Remote Reset” button, it will pop up a confirmation dialog, then
click “OK” to complete the operation.
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4.7 New (Offline Configuration)
Click “New” and select a device message dialog box:
Into the new configuration interface, all of the data is the factory defaults.
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4.8 Open
Open: Including open online and open offline;
Open online (shown as below ) : be equivalent with “import”, select the device from the list, click the " Open
" , if the device type of the gateway is the same with the opened configuration file type , and the device allows
remote configuration , open successfully ; otherwise ,given the appropriate error message.
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Open offline: Open directly without choosing the device .
4.9 Save
Save: Select a device, click "Save”, save the parameters of the device as ".Inf" format on the hard disk.
Notes:
The configuration file can be open with Notepad, you can modify the data inside, be sure to modify the
accuracy of the data;
Please don’t modify keywords, don’t add a space.
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4.10 Communication test
“Communication test” can manually transmit Modbus TCP request to test serial devices. Click
“Communication test” button and it will pop up the follow interface:
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IP address——The IP address of ES to be connected;
Port——The port of ES to be connected and the default is 502;
Function ——Support function code: “1”, “2”, “3”, “4”, “5”, “6” , “15”and “16”;
Slave ID——Slave address (virtual ID);
Start address——Starting address of registers or coils, Decimal;
Number——Number of registers or coils, Decimal;
Data (above)——The data to be sent; hex; between bytes, separated by a space;
State——Status of response, there is “no response”, “right response”, and “wrong response”;
Data (below)——Show the content of response.
Notes:
The format of input data is hexadecimal, must follow such as “12 ff 0c” format. The format of response data
is also hexadecimal.
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5 Typical Application
ES can connect Modbus master/slave devices to Ethernet. ES is a bridge in the communication to complete
the conversation of Modbus TCP and Modbus RTU/ASCII.
The following is some typical application of ES. (Example ES-304)
5.1 Multiple Ethernet Masters Connect Multiple Serial Slaves
ES-304 supports dual Ethernet ports, built- Switch function .Support more than one independent serial .when
serial is RS485, it can connect nearly 100 Modbus slave devices to the Ethernet.
Host
Computer
Modbus TCP
Master
Modbus Network Ⅰ
Modbus Network Ⅲ
……
……
Protector
Temperature
Controller
ES-304
Inverter
Moisture
Analyzer
……
……
Temperature and
humidity
controller
Multifunction
energy monitoring
instruments
Modbus Network Ⅱ
Modbus Network Ⅳ
Motor protection
devices
Process control
logger
HMI
Inverter
Text display
Temperature
table
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5.2 Multiport serial masters connect multiple Ethernet slaves
Modbus RTU/ASCII Master
RS-485
ES-304
Ethernet
Modbus TCP
Slave
Modbus TCP
Slave
5.3 Serial master connect serial slave via Ethernet
Serial devices via Ethernet communication, not subject to the limitation of the transmission distance.
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RTU/ASCII Master
Ethernet
RS-485
ES-304
Modbus Network Ⅰ
Modbus Network Ⅲ
… …
… …
Protector
Temperature
Controller
ES-304
Inverter
Moisture
Analyzer
Multifunction
energy monitoring
instruments
Modbus Network Ⅱ
Modbus Network Ⅳ
… …
… …
Motor protection
devices
Process control
logger
Temperature and
humidity
controller
HMI
Inverter
Text display
Temperature
table
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6 Installations
6.1 Mechanical Dimensions
Size: 40mm (Width)*125mm (Height)*110mm (Depth)
6.2 Installation
35mm DIN rail mounting
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User Manual
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www.sibotech.net
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