How to use the data dictionary function in the low code platform of the Internet of things?

In the low code system of the Internet of things , There is usually such a module —— The data dictionary . Today, I will take you to learn about AIRIOT The purpose and specific operation of the data dictionary module in the low code platform of the Internet of things .

Data dictionary definition

The data dictionary is used to add global variables , The added variables can be used to define alarm rules 、 Add calculation node 、 Process management and picture binding . The function of global variables is to modify a place , Modify all global variables in the platform at one time .

Data dictionary can be added separately or by importing ; The description of the data dictionary management page is shown in the figure  9-1  Shown ：

​ chart  9-1

​ Add data dictionary

Adding a data dictionary requires adding a variable number 、 Variable name 、 Variable type and value , Variable types include numbers and strings , The configuration instructions for adding system variables are shown in the figure  9-2  Shown ：

chart  9-2

​ Use the data dictionary to explain

The data dictionary is a global variable , Data dictionaries can be used in computing nodes 、 Alarm rules and screen binding , Control the change of this variable globally through the system variable .

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