builds the command string for scanner . concode_field_sep String COMMAND_SHUTDOWN_LASER concode_elem_sep boolean isTracking concode_elem_sep String COMMAND_LASER_ON concode_elem_sep String COMMAND_TRACKING concode_elem_sep float center concode_elem_sep String COMMAND_LASER_OFF concode_elem_sep String scannerId concode_elem_sep boolean isConnected concode_elem_sep String COMMAND_INIT concode_elem_sep SerialPort serialPort concode_elem_sep float currentValue concode_field_sep float getDistance concode_elem_sep void laserOn concode_elem_sep float waitForDistance concode_elem_sep void closePort concode_elem_sep boolean isConnected concode_elem_sep void setCenter concode_elem_sep void main concode_elem_sep void endScan concode_elem_sep void startScan concode_elem_sep void setPort concode_elem_sep String command concode_elem_sep void serialEvent concode_elem_sep void startTracking concode_elem_sep boolean resetDistance concode_elem_sep void laserOff concode_elem_sep float getRawDistance concode_elem_sep void shutdownLaser
String function ( String arg0 ) { return scannerId + arg0 + "srini_string" ; }