Temperature management in ring topology networks

A method for temperature management in a network, wherein control devices exchange data via the network using transmitting/receiving units and the temperature is measured at at least one control device, the method comprising the acts of:

• measuring the temperature at the transmitting/receiving unit of at least one control device;
• switching off the transmitting/receiving unit as soon as the temperature at the transmitting/receiving unit of the at least one control device exceeds a predefined critical temperature Tkrit;
• blocking wakeup requests put onto the network via the control devices as soon as the temperature at the transmitting/receiving unit of the control device exceeds a predefined critical temperature Tkrit;
• canceling the blocking of the wakeup requests as soon as the temperature of the transmitting/receiving unit has dropped to a temperature below the predefined critical temperature Tkrit and below a predefined threshold value temperature Tth within a predefined time period, wherein the threshold value temperature Tth lies below the critical temperature Tkrit;
• and
• placing the at least one control device in an energy saving mode as soon as the temperature of the transmitting/receiving unit exceeds the predefined critical temperature Tkrit.