public OpcStatusCollection DeleteHistory(
OpcContext context,
OpcHistoryModificationInfo modificationInfo,
OpcValueCollection values)
{
var results = OpcStatusCollection.Create(OpcStatusCode.Good, values.Count);
lock (this.syncRoot) {
for (int index = 0; index < values.Count; index++)
{
var timestamp = OpcHistoryValue.Create(values[index]).Timestamp;
var result = results[index];
if (this.History.Contains(timestamp))
{
var value = this.History[timestamp];
this.History.RemoveAt(timestamp);
var modifiedValue = value.CreateModified(modificationInfo);
this.ModifiedHistory.Add(modifiedValue);
}
else
{
result.Update(OpcStatusCode.BadNoEntryExists);
}
}
}
return(results);
}
public OpcStatusCollection DeleteHistory(
OpcContext context,
OpcHistoryModificationInfo modificationInfo,
DateTime?startTime,
DateTime?endTime,
OpcDeleteHistoryOptions options)
{
var results = new OpcStatusCollection();
lock (this.syncRoot) {
if (options.HasFlag(OpcDeleteHistoryOptions.Modified))
{
this.ModifiedHistory.RemoveRange(startTime, endTime);
}
else
{
var values = this.History.Enumerate(startTime, endTime).ToArray();
this.History.RemoveRange(startTime, endTime);
for (int index = 0; index < values.Length; index++)
{
var value = values[index];
this.ModifiedHistory.Add(value.CreateModified(modificationInfo));
results.Add(OpcStatusCode.Good);
}
}
}
return(results);
}
public OpcStatusCollection DeleteHistory(
OpcContext context,
OpcHistoryModificationInfo modificationInfo,
IEnumerable <DateTime> times)
{
var results = OpcStatusCollection.Create(OpcStatusCode.Good, times.Count());
lock (this.syncRoot) {
int index = 0;
foreach (var time in times)
{
var result = results[index++];
if (this.History.Contains(time))
{
var value = this.History[time];
this.History.RemoveAt(time);
var modifiedValue = value.CreateModified(modificationInfo);
this.ModifiedHistory.Add(modifiedValue);
}
else
{
result.Update(OpcStatusCode.BadNoEntryExists);
}
}
}
return(results);
}
static void Main(string[] args)
{
var client = new OpcClient("opc.tcp://127.0.0.1:49320");
client.Security.UserIdentity = new OpcClientIdentity("Tim", "1qaz2wsx3edc4rfv");
client.Security.EndpointPolicy = new OpcSecurityPolicy(OpcSecurityMode.SignAndEncrypt, OpcSecurityAlgorithm.Basic256);
client.Connect();
// 一次寫取多個Tag
OpcWriteNode[] wCommands = new OpcWriteNode[] {
new OpcWriteNode("ns=2;s=Channel2.Device1.Tag1", false), // 寫 boolean
new OpcWriteNode("ns=2;s=Channel2.Device1.Tag2", "Test"), // 寫 sting
new OpcWriteNode("ns=2;s=Channel2.Device1.Tag3", 8.7), // 寫 float
new OpcWriteNode("ns=2;s=Channel2.Device1.Tag3", (ushort)88) // 寫 word
};
OpcStatusCollection results = client.WriteNodes(wCommands);
// 一次讀取多個Tag
OpcReadNode[] rCommands = new OpcReadNode[] {
new OpcReadNode("ns=2;s=Channel2.Device1.Tag1"),
new OpcReadNode("ns=2;s=Channel2.Device1.Tag2"),
new OpcReadNode("ns=2;s=Channel2.Device1.Tag3"),
new OpcReadNode("ns=2;s=Channel2.Device1.Tag4")
};
IEnumerable <OpcValue> job = client.ReadNodes(rCommands);
int i = 0;
foreach (OpcValue value in job)
{
Console.WriteLine("ReadNode: {0},\t = {1}", rCommands[i].NodeId, value);
i++;
}
// 訂閱Tag5
OpcSubscription subscription = client.SubscribeDataChange("ns=2;s=Channel2.Device1.Tag5", HandleDataChanged);
subscription.PublishingInterval = 1000;
subscription.ApplyChanges();
Console.ReadLine();
client.Disconnect();
}
public OpcStatusCollection UpdateHistory(
OpcContext context,
OpcHistoryModificationInfo modificationInfo,
OpcValueCollection values)
{
var results = OpcStatusCollection.Create(OpcStatusCode.Good, values.Count);
lock (this.syncRoot) {
var expectedDataTypeId = this.Node.DataTypeId;
for (int index = 0; index < values.Count; index++)
{
var result = results[index];
var value = OpcHistoryValue.Create(values[index]);
if (value.DataTypeId == expectedDataTypeId)
{
if (this.History.Contains(value.Timestamp))
{
var oldValue = this.History[value.Timestamp];
this.History.Replace(value);
var modifiedValue = oldValue.CreateModified(modificationInfo);
this.ModifiedHistory.Add(modifiedValue);
result.Update(OpcStatusCode.GoodEntryReplaced);
}
else
{
this.History.Add(value);
var modifiedValue = value.CreateModified(modificationInfo);
this.ModifiedHistory.Add(modifiedValue);
result.Update(OpcStatusCode.GoodEntryInserted);
}
}
else
{
result.Update(OpcStatusCode.BadTypeMismatch);
}
}
}
return(results);
}
