JSON Utilities SL Library Documentation¶
- Company:
CODESYS
- Title:
JSON Utilities SL
- Version:
1.11.0.0
- Categories:
Application|Utils
- Namespace:
JSON
- Author:
CODESYS Development GmbH
- Placeholder:
JSON_Utilities_SL
Description [1]¶
With the „JSON Utilities SL“ library, data can be read and written in JSON format from a CODESYS controller.
The ‚JSON Utilities SL‘ library provides the following functionalities:
Read JSON files (UTF-8 and UTF-16)
Read JSON byte arrays
Write JSON files (UTF-8 and UTF-16)
Read JSON byte arrays
Search for keys, values, and child and parent elements
The data is stored in an array of structures. Data access and element search is performed by means of
methods from the JSONData function block.
The simple creation of a JSON-File can be realized with funcion block JSONBuilder.
The function blocks JSONByteArrayReader and JSONFileReader
read data in JSON format and save the values in the JSONData function block. Writing files and byte arrays
is performed by means of the function blocks JSONFileWriter and JSONByteArrayWriter.
The package ‚IIoT Libraries SL‘ contains the library „JSON Utilities SL“, the sample project „JSON Utilities SL Example.project“, and a description of the programming interface in CHM format.
You can find the sample project and the CHM file here: C:\Users\USERNAME\JSON Utilities SL\VERSION
Bemerkung
To test the examples on a CODESYS Control Win the files „test_utf16.json“ and „test.json“ can be copied from the target directory of the installation into the directory „c:\temp“.
The sample project provides three applications to demonstrate how to use the library.