Using Pragmas Pragma in CODESYS A pragma is a text in the source code of the application that is enclosed in curly brackets. Pragmas are used to insert special statements in the code, which the compil

Using Library POUs Libraries are collections of objects that you can link to your application. You can use the objects contained in libraries in exactly the same way as objects that you have defined i

Integrating C Modules With the CODESYS C code integration, modules developed in C can be integrated as a library into a CODESYS project. The module is stored as a dynamic runtime module in a library a

Programmatic Access to I/Os CODESYS provides the following features for mapping project variables to input, output, and memory addresses: Assignment of project variables to input, output and memory ad

Variable Configuration – VAR_CONFIG You use the "variable configuration" to map variables of functions blocks to the process image. For declarations in the function block, you assign the variables to

AT Declaration In the variables declaration, the code AT assigns a project variable to a specific input address, output address, or memory address of the PLC that is configured in the device tree. You

Checking Syntax and Analyzing Code CODESYS provides useful functions for detecting errors and helping you to create programs. The syntax check marks errors and outputs them to the message view as earl

Checking Syntax When you input code, the precompile in CODESYS already runs some basic checks. Then, wavy underlines appear under buggy code in the editor and an error message is printed to the messag

Analyzing Code Statically You can also let your source code be analyzed by static analysis ("lint") during the code generation. This determines whether or not your source code complies with the coding

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