What is the term for the procedure of checking for errors after changes are made to a PLC program?

The procedure of checking for errors after changes are made to a PLC program is commonly referred to as "verifying." This process involves systematically reviewing the program to ensure that it behaves as intended and that any modifications have been correctly implemented. During verification, programmers confirm that the desired outputs are achieved based on given inputs and that no unintended behaviors have arisen from the recent changes.

Verification is crucial in the context of PLC programming because it helps to identify any issues before the program is put into operation, minimizing the risk of malfunction or unexpected outcomes. This step is part of a quality assurance process that aims to ensure the robustness and reliability of the system.

While other terms such as testing and debugging are related to the broader programming and troubleshooting processes, verification specifically focuses on the confirmation of correctness after changes. Testing generally involves executing the program to observe its performance under various conditions, while debugging is the process of finding and correcting specific errors within the code. Once a program has been verified, it can then be subjected to testing and debugging as necessary.