public static void leftShift3(final WriteBuffer buffer, int _value) throws SerializationException {
        int valor = _value << 3;
        buffer.writeUnsignedInt(16, valor);
    }
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