System for the control of a compression system and method for controlling the compression system, said compression system comprising compressors (C1-C7) and their controllers (Al- A7) for the compression of the fluid medium, secondary treatment devices for the treatment of the medium delivered from the compressors, and piping systems (17-19, 23) for conducting the fluid medium to a place of consumption (16, 22), said control system comprising a control unit (3) containing a data processing system (34) for controlling the compression system, a user interface (35) including a display associated with it and transmission means for the transmission of control data between the control unit, the controllers and pressure sensors. The compression system can have a number of adjustment values, which determine the requirement for fluid medium, the change in direction of it and the rate of change, wherein a compressor-specific adjustment value is based on parameters given from the user interface, wherein an adjustment value is converted into a network delivery request or into a network pressure setting or into a compressor-specific pressure setting, wherein the control system is adapted to convert a network delivery request or a network pressure setting or a compressor- specific pressure setting into compressor-specific control requests via the direct control data, pressure setting or a pressure data item of the compressor.