A method and system automatically translate process instructions. In the method, a process instruction is received in a first language that different from a second language being the operating language of the manufacturing execution system (MES). A text of the received process instruction is extracted in real time by a processing unit using an extraction algorithm. The method continues with searching and finding in real time in a database a translation of the extracted text into the second language. The database includes for all texts of all process instructions expressed in the first language, a translation of said texts into the second language. The texts in the first language and their corresponding translation are preferentially organized in a dictionary. Further, creating a process instruction in the second language from the found text in the second language and automatically displaying in real time the process instruction in the second language.