Testing and Debugging CODESYS provides various options for testing your application and detecting errors. You can start your application in simulation mode, even without connecting any hardware. Using

Testing in Simulation Mode Use simulation mode for testing and debugging your program when you do not have a physical target device. In this mode, the application is started on a simulated device. The

Stepping Through a Program You can step through an application and navigate the code. This is useful to check the status of your code at runtime. You can examine the call process, track variable value

Resetting Applications Resetting the application stops the program and resets the variables to their initialization values. Depending on the type of reset, retain variables and persistent variables ar

Flow Control With flow control, you can monitor the processing of the application program. Flow control is provided for the ST, FBD, LD, and CFC language editors. With an activated flow control, CODES

Determining the Current Processing Position with the Call Stack You can use the call stack for determining the current position of the program flow. This function is very useful when stepping into pro

Checking the task list The Task List tab of the device editor indicates in an overview the tasks that process the individual inputs and outputs of the I/O mapping of your application and the priority

Application at Runtime When the application is running on the PLC, there are functionalities in the CODESYS development system for monitoring and changing the variable values, as well as for recording

Monitoring of Values At runtime, you can monitor the current variable values of a programming object at different places in a project. The following is what we refer to as "monitoring". Online view of

Using Watch Lists What is a watch list? A watch list is a user-defined list of project variables that are collected in one view for the purpose of monitoring their values. In online mode, you can writ