Abstract: A method for saving energy at a network node in an automation network comprising receiving energy saving command data for switching at least one network device to an energy saving state, forwarding the energy saving command data to the network device, evaluating the energy saving command data by the network node, and saving energy at the network node. When the network node receives and/or outputs no data or a reduced volume of data to the network device during the energy saving state, the energy saving is effected by placing at least one portion of the network node into an energy saving state, where the portion is determined by any one of a plurality of network ports, which, because of the energy saving state of the network device, is being used to output and/or receive no data or a reduced volume of data.