Method for communicating machine control data of a mechatronic system in a network having at least one publisher network user (4, 6) that sends the control data via the network by means of a data interchange standard that supports a publish/subscribe communication model and having at least one subscriber network user (6, 4) that receives the control data via the network by means of the data interchange standard, wherein the publisher network user performs the transmission in the form of network messages that are each intended for subscriber network users decoupled from the publisher network user that are selectable as required, and the subscriber network user selectively obtains or selects a network message with its control data to be procured, in each case preferably under event control, and/or selectively takes the control data to be procured from a network message, wherein a machine controller is incorporated in the network as a network user, which machine controller can be randomly configured as a subscriber network user and as a publisher network user in order to communicate the control data, characterized in that the machine controller is a programmable logic controller and/or a computer numeric control of the mechatronic system that is configured as a subscriber network user and as a publisher network user in order to communicate control data and communicates control data present on the machine controller throughout the network, wherein as a publisher network user the machine controller provides control data with a message identifier, encodes said control data as a network message by means of the data interchange standard and sends the network message via the network, and as a subscriber network user the machine controller receives a network message intended for the subscriber network user by means of a message identifier via the network and decodes said network message as control data by means of the data interchange standard, and wherein a drive controller configured as a subscriber network user is present in the mechatronic system and, as a subscriber network user, receives control data from the machine controller. at least one publisher network user (4, 6) that sends the control data via the network by means of a data interchange standard that supports a publish/subscribe communication model and having at least one subscriber network user (6, 4) that receives the control data via the network by means of the data interchange standard, wherein the publisher network user performs the transmission in the form of network messages that are each intended for subscriber network users decoupled from the publisher network user that are selectable as required, and the subscriber network user selectively obtains or selects a network message with its control data to be procured, in each case preferably under event control, and/or selectively takes the control data to be procured from a network message, wherein a machine controller is incorporated in the network as a network user, which machine controller can be randomly configured as a subscriber network user and as a publisher network user in order to communicate the control data, characterized in that the machine controller is a programmable logic controller and/or a computer numeric control of the mechatronic system that is configured as a subscriber network user and as a publisher network user in order to communicate control data and communicates control data present on the machine controller throughout the network, wherein as a publisher network user the machine controller provides control data with a message identifier, encodes said control data as a network message by means of the data interchange standard and sends the network message via the network, and as a subscriber network user the machine controller receives a network message intended for the subscriber network user by means of a message identifier via the network and decodes said network message as control data by means of the data interchange standard, and wherein a drive controller configured as a subscriber network user is present in the mechatronic system and, as a subscriber network user, receives control data from the machine controller.