c# 数据写入三菱PLC

public void Data_Write_Value(int[] m_write_data)
        {
            int lSize = 2;

string[] AddressArray = new string[18] { "D720", "D721", "D722", "D723", "D724", "D725", "D726", "D727", "D728", "D729"
            ,"D730", "D731", "D732", "D733", "D734", "D735", "D736", "D737"};

for (int k = 0; k < m_write_data.Length; k++)
            {

int ReturnValue;
                lock (lockobj)
                {
                    ReturnValue = _ActUtlType.WriteDeviceBlock(AddressArray[k], lSize, m_write_data[k]);
                }

　　　　if (ReturnValue != 0)　　　　//返回0，写入成功。
                {
                    throw new Exception("PC Left Write Data Error!");
                }
            }

        }