What is an MQTT gateway?What is the difference with traditional DTU?

What is MQTT?MQTT is a "lightweight" communication protocol based on the publish/subscribe model.The biggest advantage of MOTT is that it can provide real-time and reliable message services for connecting remote devices with very little code and limited bandwidth.As a low-overhead, low-bandwidth instant messaging protocol, it has a wide range of applications in the Internet of Things, small devices, and mobile applications.

Bluebee MQTT gateway is an industrial-grade edge computing gateway for field device access, data collection and transmission.Supports docking with various mainstream PLCs, touch screens, sensors and controllers, etc., and supports script editing, can be connected to major cloud platforms, supports the transparent transmission function of network ports and serial ports, and can realize remote control of PLC, touch screen, controller and other equipment programs.Download and online debugging.So as to realize the requirement of quick and convenient docking of industrial equipment with MQTT cloud server.

    MQTT gateway has dual network ports and dual serial ports, supports 4G full Netcom, and supports docking with various mainstream PLC protocols, including Modbus, Siemens, Mitsubishi, Delta, Xinjie, etc..It supports script editing, and the JSON format of data reporting can be customized through script editing, so as to realize the connection of various self-built MQTT servers, as well as the connection of Alibaba Cloud, Tencent Cloud, Baidu Cloud and other major cloud platforms.It also supports custom topics and custom system variables, including data reporting topics, data reading topics, and numerical writing topics, which can flexibly match the user's remote writing of variable data to the lower computer.

Our MQTT gateway is also powerful internally compared to traditional DTUs.

(1) Analysis of mainstream PLC protocols

Support mainstream PLC protocol analysis (network port/serial port) including Modbus, Siemens, Mitsubishi, Delta, Xinjie, etc.

(2) PLC remote debugging

Support network port/serial port transparent transmission, which can realize remote upload, download and debugging of PLC, touch screen, controller and other equipment programs.

(3) Resume upload after disconnecting from the Internet

Support breakpoint resuming and have 40M data storage space, store data when the network is disconnected, and re-send the cached message after the network is restored, so as to ensure the integrity of the dataand continuity.

(4) Support script

Support script editing, customize the JSON format of data reporting, and realize the docking of all MQTT protocol platform systems.

(5) Support custom system variables

Customize device identification such as ID, license plate number, model, etc.

(2) Edge computing function

The gateway implements protocol analysis, data processing, alarm judgment, data formula conversion and dead zone judgment on the edge side, reducing invalid data uploading to the cloud and reducing cloud server load; and SSL/TLS data encryption ensures data security.

and can open the gateway configuration protocol, which is convenient for platform developersIntegrate the management and configuration functions of the gateway into your own system to realize remote monitoring of the gateway.The gateway has high-level EMC hardware protection measures to deal with the harsh conditions of the industrial site environment and the impact of high and low temperatures on machine functions, and has dual watchdog programs to prevent the processor from crashing and stopping work.The production of customers is escorted.