Scrubber control system

An apparatus for use in a wafer scrubber system, said apparatus comprising:

• a first motor;
• a host processor that controls the wafer scrubber system and that generates a message containing first motor control information in response to running a transmit process as part of controlling the wafer scrubber system to cause the first motor to perform a function related to operation of the wafer scrubber system;
• a backplane, coupled to the host processor, communicating a control signal to said first motor in response to the message, wherein said backplane concentrates motor control signals for one or more motors into a single connection, said backplane comprising
• a plurality of control board connectors adapted to receive separate control boards, wherein one of the plurality of control board connectors is coupled to said control board,
• a control board that receives said message and generates the control signal, corresponding to said message, to said first motor,
• a control signal connector coupling said backplane and said first motor, and
• a bus connector;
• a communications medium coupling said host processor and said control board via said backplane, said communications medium supporting a first communications path and a second communications path, said first communications path transmitting messages from said host processor to said control board, said second communications path transmitting messages from said control board to said host processor, wherein said bus connector couples said first communications path, said second communications path, and said backplane;
• and
• a control system housing to maintain the host processor, the backplane and the communications medium separate from the first motor.