A method for generating control-code, where at least one function-block and/or function-block-connection is specified. The method includes providing an indexed database containing data of at least part of an existing control-diagram with function-blocks and function block-connections; displaying a diagram-entry-field for specifying the control-diagram by defining the at least one function-block and/or the function block-connection and receiving a user input thereof; comparing received user input with the data of the indexed database to identify at least one similar part of the at least one control-diagram; displaying an assisting-menu with the at least one similar part of the at least one control-diagram; receiving an acceptance or rejection of the at least one similar part of the at least one control-diagram; inserting, in case of acceptance, the at least one similar part of the at least one control-diagram from the indexed database in the diagram-entry-field; and translating the completed control-diagram in the control-code.