System of wire-bus net control devices with minimal rest current requirements

A control system comprising:

• an operating power source;
• a power supply bus which is permanently connected to supply poles of the operating power source;
• and
• a plurality of control devices for controlling operation of respective operating components, said plurality of control devices including a first control device and other control devices, and said plurality of control devices being permanently connected to the power supply bus for receiving a supply of operating current and being coupled in communication via a data bus;
• wherein
• said first control device has a standby operating function with prompting readiness, is constantly active during prompting readiness, and apart from its communication connection via the data bus, has at least one signal input through which it can be prompted as well as a switch-on control output which can deliver a switch-on signal when a normal operating state of said first control device is reached;
• each other control device has internal control means for selectively placing said other control device in a shut off state, wherein no power is consumed from the power supply bus, when said first control device is in the standby mode, and a switch-on control input to which a control signal for activating said internal control means can be supplied;
• the switch-on control input of each of the other control devices is connected with the switch-on control output of the first control device;
• and
• when the switch-on signal is output, the internal control means causes other control devices to be energized, and thus be placed in operational readiness.