public static int rightShift3(final ReadBuffer buffer) throws ParseException {
        return buffer.readUnsignedInt(16) >> 3;
    }
converts incoming byte to an integer regarding used BCD format

@param incomingByte the incoming byte
@return converted BCD number
plc4j/drivers/s7/src/main/java/org/apache/plc4x/java/s7/readwrite/utils/StaticHelper.java