The assembly type to be built is selected via a barcode on the works order which configures the drives and build sequence. At each section, sensors detect the presence of O’rings etc. before allowing the operator to move on to the next OP. The central tool tower rotates to present the correct driver for the OP being carried out with the drive only being enabled when all the sensor criteria has been met. The part gets released from the fixture once the tightening torque has been reached. The last fixture ensures the part is up the right way and the labels are applied straight!