/// <summary>
/// opc注册组和数据点
/// </summary>
/// <param name="device"></param>
/// <param name="configs"></param>
public static void OpcRegister(DC_DEVICE device, List <DC_DATA_CONFIG> configs)
{
OpcGroup opcGroup = new OpcGroup(device.ID); //创建组对象
OpcServer.Instance.AddGroup(opcGroup); //组添加到server
opcGroup.DataReceived += OpcGroup_DataReceived;
opcGroup.IsSubscribed = true;
foreach (var config in configs)
{
OpcItem opcItem = new OpcItem(config.ID, device.CHANNEL + ":[" + device.S7CONNECTION + "]" + config.MEMORY_ADDRESS); //创建数据项对象
opcItem.IsActive = config.SUBSCRIPTION == 1?1:0; //当为0时，可读写，但不会订阅数据;为1时，可读写,会订阅数据
opcGroup.AddItem(opcItem); //项添加到组
}
}
/// <summary>
/// 添加一项
/// </summary>
/// <param name="opcItem"></param>
public void AddItem(OpcItem opcItem)
{
OPCITEMDEF item = new OPCITEMDEF();
item.szAccessPath = opcItem.AccessPath;
item.szItemID = opcItem.PlcAddress;
item.bActive = opcItem.IsActive;
item.hClient = opcItem.ClientItemHandle;
item.dwBlobSize = opcItem.dwBlobSize;
item.pBlob = opcItem.pBlob;
item.vtRequestedDataType = opcItem.RequestedDataType;
IntPtr pAddResults = IntPtr.Zero;
IntPtr pErrors = IntPtr.Zero;
try
{
OPCItemMgt.AddItems(1, new OPCITEMDEF[] { item }, out pAddResults, out pErrors);
//获取ServerItemrHandles
int[] errors = new int[1];
Marshal.Copy(pErrors, errors, 0, 1);
IntPtr pos = pAddResults;
if (errors[0] == 0)
{
OPCITEMRESULT result = (OPCITEMRESULT)Marshal.PtrToStructure(pos, typeof(OPCITEMRESULT));
opcItem.ServerItemHandle = result.hServer;
OpcItems.Add(opcItem.ClientItemHandle, opcItem);
}
else
{
throw new ApplicationException($"添加组[{GroupName}]时，添加项[{item.szItemID}]失败！");
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
if (pAddResults != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(pAddResults);
pAddResults = IntPtr.Zero;
}
if (pErrors != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(pErrors);
pErrors = IntPtr.Zero;
}
}
}