The scanner system measures the diameter, position and length of each log passing longitudinally through the scanner heads. The computer reads the data from the scanner and the encoder, determines the log diameter, length, volume, sweep, taper and flare, and concludes the log sort destination that is then sent to the existing 5-40 PLC for tracking. The computer also provides a graphical user interface between the operator and the controlled system (a succession of screens displaying production information, report selection, system parameters and alarms). Production reports are generated and saved at the end of every shift.

The scanner head takes measurements at 1-inch intervals along the log length with a reading accuracy of 2mm.