Abstract: A method and a device for checking the integrity of modules of a technical facility. The technical facility has multiple modules and sets of controls for controlling the technical facility. For starting up each set of controls and the overall technical facility, a master key is used which is utilized for decrypting an encrypted region of the set of controls. The master key for starting up a set of controls of the technical facility is derived from features of all sets of controls installed in the technical facility, and a start or a start-up of the technical facility can take place only when the master key is found to be satisfactory.

Abstract: A safety module for a programmable logic control system, wherein the safety module is designed as an assembly consisting of a plurality of modules with a plurality of function blocks connected through at least one internal bus and comprising at least one CPU and which can be connected through at least one interface to external sensors (and switches/buttons) and actuators (and optical/acoustic indicators and displays/monitors) for detecting at least one measurement signal, wherein the safety module operates in two channels and a self-test is implemented.

Abstract: A method and apparatus for the operation of a wind farm grid system. Methods and apparatus are provided for networking between the farm management system (farm master) and individual wind turbines (WKA) of a wind farm via a central network for the purpose of data transmission in both directions. The central network may be configured as a ring, star, line, or tree having a physical layer which communicates with a data link layer which is in communication with a wind farm protocol (WPP) application layer through a WPP real-time driver.

Abstract: A method and apparatus for the operation of a wind farm grid system. Methods and apparatus are provided for networking between the farm management system (farm master) and individual wind turbines (WKA) of a wind farm via a central network for the purpose of data transmission in both directions. The central network may be configured as a ring, star, line, or tree having a physical layer which communicates with a data link layer which is in communication with a wind farm protocol (WPP) application layer through a WPP real-time driver.

Abstract: A method for operating a programmable logic controller (PLC), and a programmable logic controller (PLC) for a processing plant with a central data processing unit and a sequence control that reads in, processes input data from inputs, and outputs the processed output data to outputs. The data processing unit performs only superordinate administrative functions for the administration of downstream input and output modules and is embodied as an ADMIN data processing unit. The sequence control is embodied as a partial application autonomously executing in the input and output modules.