"In practical terms, these features can add up to faster operations for robot workcells, which is why Wittmann Robot and Automation Systems Inc. of Torrington, Conn., adopted CANbus for all its CNC robots 18 months ago. Sales manager Ken Heyse explains that Wittmann's previous CNC controller, which used a single microprocessor for all robot and peripheral functions, had to perform various subroutines sequentially, potentially interrupting the operation of the robot. CANbus, by contrast, handles data locally. The robot itself, its pendant, stackers, and other downstream equipment all process data in their own microprocessors. Only then does a master controller coordinate all those efforts. In Wittmann's CANbus CNC controls, all the robot programs and related subroutines run simultaneously on the different microprocessors. The result, Heyse says, is a speedier workcell."