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USR-M511User Manual Technical Support: h.usriot.com
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USR-M511 User Manual
File Version: V1.0.4.01
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Contents
USR-M511 User Manual .......................................................................................................................................1
Features .....................................................................................................................................................................3
1. Get Start .................................................................................................................................................................4
1.1. Application Diagram ................................................................................................................................4
1.2.Hardware Design ......................................................................................................................................5
1.2.1. Hardware Dimensions .................................................................................................................5
1.2.2. LED Indicator .................................................................................................................................6
1.2.3. DB9 Pin definition .........................................................................................................................6
1.2.4. DB9 Pinboard ................................................................................................................................6
2. Product Functions ...............................................................................................................................................8
2.1. Basic Functions .........................................................................................................................................8
2.1.1. Static IP/DHCP ...............................................................................................................................8
2.1.2. Hardware Restore def ault settings ............................................................................................9
2.1.3. Upgrade Firmware Version .........................................................................................................9
2.2. Serial port ................................................................................................................................................10
2.2.1. Serial Port Basic Parameter ......................................................................................................10
2.2.2. Serial Package Methods ............................................................................................................. 11
2.2.3. Baud Rate Synchronization ....................................................................................................... 11
2.3.Modbus protocol transmission ............................................................................................................. 11
2.3.1.Modbus Master ............................................................................................................................. 11
2.3.2.Modbus Slave ................................................................................................................................12
2.4. Modbus Slave management ..................................................................................................................14
2.4.1.Modbus data monitoring.............................................................................................................14
2.4.2.Modbus data management .........................................................................................................15
2.5.Features ....................................................................................................................................................16
2.5.1. Network Identity Packet Function ............................................................................................16
3. Parameter Setting..............................................................................................................................................17
3.1. Web Server Configuration ....................................................................................................................17
3.2. AT Command ...........................................................................................................................................17
3.2.1. Serial AT Command ....................................................................................................................18
3.2.2. Network AT Command ...............................................................................................................18
4. Contact Us ............................................................................................................................................................19
5. Disclaimer ...........................................................................................................................................................19
6. Update History ...................................................................................................................................................19
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Features
Support Modbus_RTU_Master, Modbus_RTU_Slave, Modbus_ASCII_Master, Modbus_ASCII_Slave work
modes.
Support Modbus Master Prefetch function.
Support 8 Modbus Slave automatic query by commands.
Support Modbus web server management function.
10/100Mbps Ethernet interface, support Auto-MDI/MDIX.
Baud rate support 600bps~230.4K bps; Support None, Odd, Even, Mark, Space.
Support Static IP/DHCP.
Support keep-alive.
Support RS232/RS485/RS422.
Support hardware Reload.
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1. Get Start
Product link:
http://www.usriot.com/p/industrial-modbus-gateway-modbus-rtuascii-modbus-tcp/
Figure 1 Download Page
If you have any question, please submit it back to customer center: http://h.usriot.com
1.1. Application Diagram
Figure 2 Application diagram
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1.2.Hardware Design
1.2.1. Hardware Dimensions
Figure 3 Hardware dimensions
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1.2.2. LED Indicator
Indicator
Status
PWR
On: Power on
Off: Power off
WORK
On: Working
Off: Not working
TX
On: Sending data to serial
Off: No data sending to serial
RX
On: Receiving data from serial
Off: No data receiving from serial
Figure 4 Hardware Indicator
1.2.3. DB9 Pin definition
Pin Number
RS232
RS422
RS485 1 2 RXD
RX+
3
TXD
TX-
B-
4 5
GND
6 7
RTS
TX+
A+ 8 CTS
RX-
9
Figure 5 DB9 Pin definition
1.2.4. DB9 Pinboard
We provide DB9 pinboard for user to use terminal connection.
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Type 1 2 3 4
5
RS232
TX
RX GND
RS485
A+
B-
GND
RS422
T+
T-
R+
R-
GND
Figure 6 DB9 pinboard
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2. Product Functions
This chapter introduces the functions of USR-M511 as the following diagram shown, you can get an overall
knowledge of it.
Serial
Port
Device
Network
Modbus Master
RTU/ASCII
Modbus Slave
RTU/ASCII
TCP
Client
TCP
Server
Modbus Slave management
Serial port
packaging
Network requesting
commands
AT Command Mode
Serial AT command Parameter Query/Set
Serial
port
Keep-Alive
Serial port
packaging
Serial Port
Device
Type(Master
or Slave)
Periodically querying by
commands on serial side
Periodically querying by
commands on network side
Sending read/write
commands
1
1
1
Protocol
Conversion
1
1
1
Identity packet
USR Cloud
1
Modbus storing
and dispatching
1
Modbus Slave status
dispalying
Figure 7 Product Functions diagram
2.1. Basic Functions
2.1.1. Static IP/DHCP
There are two ways for module to get IP address: Static IP and DHCP.
Static IP: Default setting of module is Static IP and default IP is 192.168.0.7. When user set module in Static IP mode,
user need set IP, subnet mask and gateway and must pay attention to the relation among IP, subnet mask and
gateway.
DHCP: Module in DHCP mode can dynamically get IP, Gateway, and DNS server address from Gateway Host. When
user connect directly to PC, module can’t be set in DHCP mode. Because common computer does not have the
ability to assign IP addresses.
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User can change Static IP/DHCP by web server. Setting diagram as follow:
Figure 8 Static IP/DHCP
2.1.2. Hardware Restore default settings
User can press Reload over 5s and less than 15s then release to restore default settings.
2.1.3. Upgrade Firmware Version
User can contact to salespersons for needed firmware version and upgrade by setup software through Ethernet
port. Setup software download link: http://www.usriot.com/usr-tcp232-m4k3-setup-software. User can
upgrade as follows:
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Figure 9 Upgrade firmware version
2.2. Serial port
2.2.1. Serial Port Basic Parameter
Serial port basic parameters as follow:
Parameter
Default
Range
Baud rate
115200
600~230400bps
Data bits
8
5~8
Parity
None
None, Odd, Even, Mark, Space
Stop bits
1
1~2
Flow control
None
None: No flow control.
HardWare: Hardware flow control(RTS/CTS).
Xon/Xoff: Software flow control.
Figure 10 Serial port basic parameter
User can change serial port parameters by web server as follow:
Figure 11 Serial port parameters configuration
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2.2.2. Serial Package Methods
For network speed is faster than serial. Module will put serial data in buffer before sending it to network. The data
will be sent to Network as Package. There are 2 ways to end the package and send package to network - Time
Trigger Mode and Length Trigger Mode.
Time Trigger Mode: Default package time is 4 bytes sending interval and use can set between 0~65535.
Length Trigger Mode: Default package length is 1460 and user can set between 0~1460.
2.2.3. Baud Rate Synchronization
When module works with USR devices or software, serial parameter will change dynamically according to
network protocol. Customer can modify serial parameter by sending data conformed to specific protocol via
network. It is temporary, when restart DTU, the parameters back to original parameters.
2.3.Modbus protocol transmission
Work mode: Modbus_RTU_Master, Modbus_ASCII_Master, Modbus_RTU_Slave, Modbus_ASCII_ Slave. Work mode
can be defined according to the serial port device of M511 and Modbus protocol. For example, serial port device is
Modbus Master and Modbus protocol is ASCII protocol, work mode is Modbus_ASCII_Master.
2.3.1.Modbus Master
Modbus Master mode means serial port device connected to M511 is Modbus Master.
1. M511 work in Modbus Master mode allow at most 32 Modbus Masters connect through RS485/RS422 to
achieve RS485/RS422 multiple Masters Polling function. But speed of RS485/RS422 interface will be a little slow
because of the limitation of RS485/RS422 baud rate.
2. When M511 work in Modbus Master mode can query information of different Modbus slaves by sending query
command with ID of specific Modbus slave. M511 allow at most 8 target server.
3. Modbus work in Modbus Master mode can apply to four applications: One Master to one Slave; one Master to
multiple Slaves; multiple Masters to one Slave; multiple Masters to multiple Slaves.
Application diagram as follows:
Figure 12 One Master to one Slave
User can change Modbus Master mode parameters by web server as follow:
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Figure 13 Modbus Master mode configuration
A.Work Mode: Four types work modes.
B.Enable Modbus Over TCP/IP: Open this function, M511 will work in transparent transmission and don’t
proceed protocol conversion. If network side protocol is Modbus RTU/ASCII, this function must be used. If
network side protocol is Modbus TCP, this function can’t be opened.
C.Remote Server AddrA: Modbus Slave address, can be domain name.
D.Remote Port NumberA: Default port is 502 and often keep default value.
E.Slave ID Range: All querying command will be sent to this Slave in this range.
F.Slave ID offset: Offset address based on the Slave ID Range. For example, Slave ID Range is 1~1, Slave ID offset
is 1, so querying command with ID 2 will be send to this slave.
G.Enable SocketB: Enable socket B to set salve 2 parameters.
H.Timeout Reconnection: No data transmission over this time, M511 will automatically disconnect and
reconnect remote Slave.
I.Modbus Timeout: Modbus response time which must be accordant with serial port Modbus Master.
2.3.2.Modbus Slave
Modbus Slave mode means serial port device connected to M511 is Modbus Slave.
1. M511 work in Modbus Slave mode allow at most 32 Modbus Slaves connect through RS485/RS422 to achieve
RS485/RS422 multiple Masters Polling function. But speed of RS485/RS422 interface will be a little slow because
of the limitation of RS485/RS422 baud rate.
2. M511 work in Modbus Slave mode support 16 Masters querying Slave information.
3. M511 work in Modbus Slave will default open Memory Function to solve the problem that Modbus Masters in
network side query Modbus Slaves too slow. When open this function, M511 will automatically update the stored
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data from serial port Modbus Slaves and reply stored data to network side Modbus Masters directly.
4. Modbus work in Modbus Slave mode can apply to four applications: One Master to one Slave; one Master to
multiple Slaves; multiple Masters to one Slave; multiple Masters to multiple Slaves.
Application diagram as follows:
Figure 14 One Master to one Slave
User can change Modbus Slave mode parameters by web server as follow:
Figure 15 Modbus Slave mode configuration
A.Work mode: Four types work modes.
B.Enable Modbus Over TCP/IP: Open this function, M511 will work in transparent transmission and don’t
proceed protocol conversion. If network side protocol is Modbus RTU/ASCII, this function must be used. If
network side protocol is Modbus TCP, this function can’t be opened.
C.Enable Memory Function:When open this function, M511 will automatically update the stored data from serial
port Modbus Slaves and reply stored data to network side Modbus Masters directly.
D.Local Port Number: Default is 502 and don’t need change.
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E.Timeout Reconnection: No data transmission over this time, M511 will automatically disconnect and
reconnect remote Slave.
F.Modbus Timeout: Modbus response time which must be accordant with serial port Modbus Master.
2.4. Modbus Slave management
M511 support Modbus management based on Websocket. So user need use browser which can support Websocket as
follow:
Browser
Version
Chrome
Version 4+
Firefox
Version 4+
Internet Explorer
Version 10+
Opera
Version 10+
Safari
Version 5+
Figure 16 Browser version
2.4.1.Modbus data monitoring
User need disable Modbus Over TCP/IP function to use Modbus data monitoring function.
(1)Open Modbus Manage and configure the Modbus Slave ID/address by web server as follow:
Figure 17 Modbus data monitoring function configuration
(2)Save and refresh the Modbus Manage, configure Slave mark to monitor conveniently.(mark only support
Chinese characters, letter and number).
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Figure 18 Modbus slave mark configuration
(3)Refresh Modbus Management and query the data. Web server will update data value without refreshing.
2.4.2.Modbus data management
M511 support Modbus data management function to query Slave information through Modbus Management
web-page. When user open Modbus data management function, M511 will disable querying commands from
Modbus Master to Modbus Slave(close protocol conversion function).
User can configure Modbus data management as follow:
Figure 19 Modbus data management configuration
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2.5.Features
2.5.1. Network Identity Packet Function
M511 work in Modbus Master mode can send identity packet to Slave. Identity packet can be user editable data or
MAC address. Identity packet will be sent when connection is established. Application diagram as follow:
Figure 20 Identity Packet application diagram
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3. Parameter Setting
There are two ways to configure USR-M511. They are web server configuration and AT command configuration.
3.1. Web Server Configuration
User can connect PC to M511 through LAN port and enter web server to configure.
Web server default parameters as follow:
Parameter
Default settings
Web server IP address
192.168.0.7
User name
admin
Password
admin
Figure 21 Web server default parameters
After firstly connecting PC to M511, user can open browser and enter default IP 192.168.0.7 into address bar,
then log in user name and password, user will enter into web server. Web server screenshot as follow:
Figure 22 Web Server
3.2. AT Command
We have specific user manual for AT commands.
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3.2.1. Serial AT Command
In transparent mode, user can enter AT command mode, then user can send AT command to module. For entering
AT command mode, please refer to this FAQ: http://www.usriot.com/enter-serial-command-mode/.
3.2.2. Network AT Command
Network AT command is to send a search keyword by broadcast, then set the parameters in a single broadcast
way. Default keyword is WWW.USR.CN and default port number is 48899. User can enter Network AT command
as follow:
Figure 23 Network AT Command
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4. Contact Us
Company: Jinan USR IOT Technology Limited
Address: Floor 11, Building 1, No. 1166 Xinluo Street, Gaoxin District, Jinan, Shandong, 250101, China
Web: www.usriot.com
Support: h.usriot.com
Email: [email protected]
Tel: 86-531-88826739/86-531-55507297
5. Disclaimer
This document provide the information of USR-M511 products, it hasn’t been granted any intellectual property
license by forbidding speak or other ways either explicitly or implicitly. Except the duty declared in sales terms
and conditions, we don’t take any other responsibilities. We don’t warrant the products sales and use explicitly or
implicitly, including particular purpose merchant-ability and marketability, the tort liability of any other patent
right, copyright, intellectual property right. We may modify specification and description at any time without
prior notice.
6. Update History
2017-09-06 V1.0.4.01 Established.
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