Solution:

This is a basic system structure for a CODESYS application. CODESYS IDE(Integrated Development Environment), is a unique software in our laptop or personal computer to develop the project by IEC 61131-3. CODESYS RTE(Run-time environment) is a real-time OS running inside the controller which turn PC into powerful PLC. IDE could do the programming and download the project to RTE through gateway, but some users encounter the connecting issue between IDE and RTE. The root cause is that the device is wrong. This FAQ shows how to choose a right device based on your platform’s configuration.