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USR-G781 User Manual

Technical Support:

h.usriot.com

Jinan USR IOT Technology Limited

www.usriot.com

24

2.3.2. Serial Port

2.3.2.1. Parameters range

Items

Parameters

Baud Rate

300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200,

230400, 460800

Data Bits

7,8

Stop Bits

1,2

Parity

NONE

EVEN

ODD

Flow Control/485

NFC: None Flow Control

485:When you use RS485, please choose this function

Figure36 Serial parameters

2.3.2.2. 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 and Length.

2.3.2.2.1. Time Trigger Mode

If no data get from serial over the time threshold, it will end the package and send this package to network. The
range of threshold is from 10ms ~ 60000ms. Default is 50ms. If the serial keeping send data, this package will be
1K bytes.

2.3.2.2.2. Length Trigger Mode

The package will be sent to network when it up to length threshold. The range of length threshold is from 1 to
4096 bytes. Default is 1000 bytes.

2.3.2.3. 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.

Summary of Contents for USR-G781

Page 1: ...USR G781 User Manual Technical Support h usriot com Jinan USR IOT Technology Limited 1 USR G781 User Manual File Version V1 0 06 02...

Page 2: ...procedure 13 2 2 2 Networking mode 14 2 2 2 1 WAN LAN 4G 14 2 2 2 2 LAN LAN 4G 14 2 2 3 Features 15 2 2 3 1 4G Interface 15 2 2 3 2 LAN Interface 15 2 2 3 3 WAN Interface 16 2 2 3 4 DHCP Server functi...

Page 3: ...IOT Technology Limited 3 2 4 1 Reload by Hardware 26 3 Parameter Setting 27 3 1 Web Server Configuration 27 3 2 AT Command 28 3 2 1 Serial AT Command 28 3 2 2 Setup software 28 3 2 3 Transparent AT C...

Page 4: ...tralia and other areas Support 2 Ethernet RJ45 port One LAN port and another one can be set as WAN port or LAN port Support 1 SIM card socket Support PPTP VPN LT2P IPSEC and Open VPN are on developing...

Page 5: ...iot com p g781 Setup software http www usriot com usr g781 setup software v1 0 0 0 Figure 1 Download Page If you have any question please submit it back to customer center http h usriot com 1 1 Applic...

Page 6: ...USR G781 User Manual Technical Support h usriot com Jinan USR IOT Technology Limited www usriot com 6 Figure 2 Application diagram 1 1 2 Hardware Dimensions units mm Figure 3 Hardware dimensions...

Page 7: ...USR G781 User Manual Technical Support h usriot com Jinan USR IOT Technology Limited www usriot com 7 1 1 3 Hardware Interface Figure 4 Hardware interface Figure 5 Hardware interface...

Page 8: ...nformation 1 1 4 LED Indicator Indicator Status Power On Power on Off Power off NET Red 2G network Blue 3G network Purple 4G network Off No network WORK On Working Off Not working SIM On SIM card dete...

Page 9: ...25 85 Storage Temp 40 125 Working humidity 10 90 Storage humidity 5 90 Software Parameters Work Mode Transparent Mode HTTPD Client Mode Setting Command AT Command Structure Network protocol TCP UDPDNS...

Page 10: ...eratin g Band Operatin g Band Operatin g Band Operatin g Band Operatin g Band FDD LTE 1 1 1 1 2 2 3 3 3 3 4 4 4 5 5 7 7 8 8 8 12 13 20 28 TDD LTE 38 38 38 39 39 40 40 40 40 41 41 41 WCDMA 1 1 1 1 2 2...

Page 11: ...USR G781 User Manual Technical Support h usriot com Jinan USR IOT Technology Limited www usriot com 11 Figure 11 Hardware interface schematic diagram...

Page 12: ...APN access point name if you use the SIM card from the operator You must know the APN You can ask your SIM card operator for APN There are four parameters about APN Those are APN Name User Name Passwo...

Page 13: ...it Figure 13 Router Functions diagram 2 2 1 Configuration procedure Basic procedure as follows Step1 Keep G781 in power off condition Step2 Insert SIM card Step3 Connect antenna Step4 Power the G781 S...

Page 14: ...lication diagram In this mode users can connect to Internet through WAN or 4G Default configuration is WAN has higher priority When router can t connect Internet through WAN it will change to 4G netwo...

Page 15: ...Interface G781 support one 4G interface to connect Internet Functional diagram as follows Figure 18 4G Interface When user use 4G interface the most important thing is to configure the APN parameters...

Page 16: ...e Support DHCP Client and Static Address default setting is DHCP Client User can configure WAN interface by Web Server as follow Figure 20 WAN interface configuration 2 2 3 4 DHCP Server function DHCP...

Page 17: ...only support PPTP mode to achieve VPN function now And Subsequent versions will support L2TP GRE openvpn ipsec mode User can configure VPN function by Web Server as follow Figure 22 VPN function conf...

Page 18: ...binding User can bind IP address with MAC address and G781 will distribute fixed IP address to some devices User can bind IP and MAC by Web Server as follow Figure 24 Static IP binding function confi...

Page 19: ...By use Firewall function user can set firewall Filter Table rules and Forward Table rules to manage Network security And user can also add delete and modify Firewall rules by sending iptables commands...

Page 20: ...G781 User Manual Technical Support h usriot com Jinan USR IOT Technology Limited www usriot com 20 Figure 27 Forward Table rules configuration Sending iptables commands Figure 28 Sending iptables comm...

Page 21: ...s chapter introduces the DTU functions of USR G781 as the following diagram shown you can get an overall knowledge of it Figure 29 DTU functions diagram 2 3 1 Work Mode 2 3 1 1 Transparent Mode Transp...

Page 22: ...1 supports 4 socket connections simultaneously socket A socket B socket C and socket D they are independent Socket A supports TCP Server TCP Client UDP Server and UDP Client Socket B socket C and sock...

Page 23: ...Header for every data from serial and transfer HTTP format data to Network User needs to configure the HTTP Header before use this mode User can use this mode transfer the serial data to HTTP server F...

Page 24: ...the package and send package to network Time and Length 2 3 2 2 1 Time Trigger Mode If no data get from serial over the time threshold it will end the package and send this package to network The ran...

Page 25: ...be added on the front of every data package TCP client and UDP client Type of identity packet ICCID IMEI USR Cloud and USER ICCID the unique identifier of SIM card suitable to the application based on...

Page 26: ...can be used for polling Modbus data Network heartbeat packet can be used for showing connection status and keep the connection Heartbeat packet is only available in transparent mode User can configure...

Page 27: ...software in our website http www usriot com usr g781 setup software v1 0 0 0 3 1 Web Server Configuration User can connect PC to G781 through LAN interface and set PC as DHCP Then enter Web Server to...

Page 28: ...can download the setup software in our website http www usriot com usr g781 setup software v1 0 0 0 Software screenshot as follow Figure 42 Setup software 3 2 3 Transparent AT Command When module in...

Page 29: ...r 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 i...

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