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19 

 

 

higher than 20s, otherwise the connection will be easily cut off by the operator, resulting 

in communication failure. 

2)

 

Enable network management: 

You can set and enable network management, download Netview network 

management software, and realize remote online reading and modification of DTU 

configuration parameters. See related instructions for details . 

 

 

 

3)

 

Reboot mode of DTU : 

" Restart without SIM card " : It means that DTU can not be registered on the 

operator's network due to various possible reasons, such as no signal on site, sim card 

not recognized , sim arrears, etc., and DTU automatically restarts at the set time . The 

default system restart time without service is 10 minutes. " Restart at Fixed intervals " : 

AT+RBTYPE=2 1440 means that the DTU will be forced to restart 1440 minutes after the 

DTU starts to power on and run , which is a reliability guarantee mechanism. 

 

 

             

4)

 

Scheduled or timed tasks: 

The DTU can execute AT commands regularly, and the specific configuration is 

carried out in the following interface. 

 

Summary of Contents for 4G DTU

Page 1: ... 2 Connect to INTERNT or private network via a local router 8 4 4G DTU socket communication parameter configuration 9 1 COMWAY Protocol 10 2 Transparent transmission protocol 11 3 Transparent transmission ID mode 12 5 Network communication configuration 12 1 Set the network parameters of dtu 12 2 VPN communication configuration 14 3 Port mapping configuration 14 4 Network device IP information 15 ...

Page 2: ...TU configuration software Download and unzip the configuration file run dtu_config exe to see the interface as shown below Select 4G DTU general configuration in the product list to read and configure parameters 2 Configuring the Software Dashboard In the configuration page list as shown above select Dashboard On the right interface first connect the DTU through the serial port or network port 1 M...

Page 3: ...d when connecting the DTU through the serial port the power will be turned off when inserting and unplugging the SIM card to prevent the DTU serial port from entering the data connection mode Correctly set serial port parameters click connect device When the user cannot connect to the dtu through the serial port normally you can run the configuration software first click connection in configuratio...

Page 4: ...t this point click the Read from Device button to correctly read the existing configuration parameters of the DTU 3 Via Ethernet or VPN connection DTU DTU IP in the Connection Parameters field Address default 1 92 168 1 251 VPN IP need to run vpn client software first and click Connect Device ...

Page 5: ... First through the WIFI of the laptop search for the DTU hotspot the hotspot name is the 12 digit product serial number of DTU and the connection password comway666 5 Read device parameters and save parameters to configuration file In the following interface click Read from Device to read all the configuration parameters saved in the dtu In the following interface click Save to Device which will s...

Page 6: ...n to quickly configure the DTU parameters The operation steps are as follows 1 Enter the file name 2 Click to create a new file 3 Click Save to Pre saved Configuration 6 Send the at command through the debugging tool Not all AT commands are displayed in the interface of the configuration software Sometimes it is necessary to directly input AT commands for debugging To do this you can use the AT co...

Page 7: ...ake effect 3 DTU connects to internet or apn private network 1 4G connection to INTERNET or APN private network After inserting the SIM card the PWR light of the DTU is always on that is the connection to the Internet is realized When connecting to the APN private network you need to set the APN address of the private network card in Advanced Setting as shown in the figure below ...

Page 8: ...the Internet through a broadband router When connecting to the Internet through the Ethernet if the IP address of the router is 192 168 1 1 the settings are as follows When connecting to the Internet through WIFI on the WIFI Settings page set Open WIFI Terminal set the name and password of the connected hotspot and the authentication encryption method and then set the correct IP address as shown i...

Page 9: ...a dynamic domain name Select the server connection method The working mode of the DTU can be selected as constant mode or manual mode Constant connection mode means that after the DTU is powered on it automatically connects to the pre set server and reconnects immediately after disconnection manual mode means that after the DTU completes startup the serial port enters the AT command mode which can...

Page 10: ...1 COM WAY protocol private protocol for connecting comway Dc vcom software Protocol 2 ID _TRANSPARENT Tcp ip ID mode 1 COMWAY Protocol Comway protocol is a communication protocol developed by Comway IOT communication Corp based on the TCP IP protocol and is only used to establish a connection with the COMWAY Dc vcom software The specific configuration is shown in the following interface Server con...

Page 11: ...he data interval setting to deal with the accidental disconnection of the communication channel and the DTU side has not yet been aware of this unexpected situation at this time the DTU is still forwarding the data received by the serial port but all the forwarded data will be lost If the data upload interval is set to 240 seconds if the DTU does not receive data from the server within 240 seconds...

Page 12: ...TU and the host computer establish a connection which is mostly used as the DTU identification ID number or the authentication identification code of the socket connection 5 Network communication configuration 1 Set the network parameters of DTU In the Network setting of the network communication configuration page set the IP address of the Ethernet port of the 4G DTU and its IP address needs to b...

Page 13: ...ys on which means that the INTERNET connection has been established and the internal network device can communicate with the external network server program normally through the Ethernet port For example the computer is connected to the Internet through the DTU network port and the IP address is manually set as shown in the figure below DNS Select a common DNS server such as Google s DNS IP 8 8 8 ...

Page 14: ...amic IP secondly it needs to have enough communication bandwidth related to the specific communication needs of customers If you choose to communicate through the VPN SERVER of Comway IOT communication Corp VPN server is set to 888 comway com port 1276 Network name network password and the VPN IP of DTU needs to be assigned by contacting the technical support of the company 3 Port mapping configur...

Page 15: ...ve the source port number is set to 102 and the target IP is the IP address of the PLC s LAN port the target port is also 102 4 Network device IP information The information of each communication port of the DTU The communication ports include 0 local network port 1 4G dial up port 2 VPN port 3 PPTP dial up port 6 Configure WIFI parameters Double click the WIFI Setting page to display the followin...

Page 16: ...to TCP configuration 4G DTU in the product list of the configuration software MODBUS_RTU2TCP execute Connect Device on the main control panel In the MODBUS_RTU2TCP configuration page set the relevant parameters of the ...

Page 17: ...Port the port number of the Modbus TCP device connected to the DTU network port 8 Modbus TCP to RTU configuration 4G DTU in the program list of the configuration software MODBUS_ TCP 2 RTU execute Connect Device on the main control panel On the MODBUS_TCP 2RTU configuration page set the relevant parameters for converting Modbus rtu to tcp protocol Up to 8 Modbus rtu devices can be set the device i...

Page 18: ...ort 502 set as shown below 9 Configuration of advanced options In the advanced options configuration page the user can set the following content 1 Choice of TCP or UDP TCP or UDP connection the default 0 No is TCP connection UDP communication is non connection communication and the time interval of the heartbeat packet parameter setting on the Socket configuration page needs to be set no ...

Page 19: ...It means that DTU can not be registered on the operator s network due to various possible reasons such as no signal on site sim card not recognized sim arrears etc and DTU automatically restarts at the set time The default system restart time without service is 10 minutes Restart at Fixed intervals AT RBTYPE 2 1440 means that the DTU will be forced to restart 1440 minutes after the DTU starts to p...

Page 20: ... selected scheduled task through the task type option Close Task 10 Multi server parallel communication and SMS settings Multi server parallel communication settings click Multi server configuration page you can set the relevant parameters are similar to the socket configuration parameters each server can choose a different communication protocol Click SMS settings configuration page you can set c...

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