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public CreateItem ( string itemId, int samplingInterval, float deadband, bool active ) : |
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| itemId | string | The item id. |
| samplingInterval | int | The sampling interval. |
| deadband | float | The deadband. |
| active | bool | if set to |
| Résultat | ||
/// <summary>
/// Reads the item values and stores the results in the request object.
/// </summary>
/// <param name="requests">The requests.</param>
private void Da20ReadItemValues(List<ReadRequest> requests)
{
// lock (m_groupLock)
{
// if (m_group == null)
//{
ComDaGroup m_group = new ComDaGroup(this, false);
//}
try
{
int count1 = 0;
GroupItem[] items = new GroupItem[requests.Count];
ReadRequest[] addItemRequests = new ReadRequest[requests.Count];
// create the items in the temporary group.
for (int ii = 0; ii < requests.Count; ii++)
{
ReadRequest request = requests[ii];
if (request == null)
{
continue;
}
if (!request.ValueRequired)
{
continue;
}
// add the item.
items[count1] = m_group.CreateItem(request.ItemId, 0, 0, true);
addItemRequests[count1] = request;
count1++;
}
// create the items on the server.
m_group.ApplyChanges();
// build the list of values to write.
int count2 = 0;
int[] serverHandles = new int[count1];
ReadRequest[] readRequests = new ReadRequest[count1];
for (int ii = 0; ii < count1; ii++)
{
// check for error on create.
GroupItem item = items[ii];
ReadRequest request = addItemRequests[ii];
if (item.ErrorId < 0)
{
request.Value = new DaValue();
request.Value.Error = item.ErrorId;
continue;
}
serverHandles[count2] = item.ServerHandle;
readRequests[count2] = request;
count2++;
}
if (count2 > 0)
{
// write values to the server.
DaValue[] values = m_group.SyncRead(serverHandles, count2);
// read the values.
for (int ii = 0; ii < count2; ii++)
{
if (values != null && values.Length > ii)
{
readRequests[ii].Value = values[ii];
}
else
{
readRequests[ii].Value = new DaValue() { Error = ResultIds.E_FAIL, Timestamp = DateTime.UtcNow };
}
}
// delete the items.
for (int ii = 0; ii < count1; ii++)
{
GroupItem item = items[ii];
if (item.ErrorId >= 0)
{
m_group.RemoveItem(item);
}
}
m_group.ApplyChanges();
}
}
finally
{
// delete the group and items.
m_group.Delete();
}
}
}
/// <summary>
/// Writes the item values to servers.
/// </summary>
/// <param name="requests">The requests.</param>
private void Da20WriteItemValues(List<WriteRequest> requests)
{
//lock (m_groupLock)
{
//if (m_group == null)
//{
ComDaGroup m_group = new ComDaGroup(this, false);
//}
try
{
int count1 = 0;
GroupItem[] items = new GroupItem[requests.Count];
WriteRequest[] addItemRequests = new WriteRequest[requests.Count];
object[] convertedValues = new object[requests.Count];
// create the items in the temporary group.
for (int ii = 0; ii < requests.Count; ii++)
{
WriteRequest request = requests[ii];
if (request == null)
{
continue;
}
// status code writes not supported.
if (request.Value.StatusCode != StatusCodes.Good)
{
request.Error = ResultIds.E_NOTSUPPORTED;
continue;
}
// timestamp writes not supported.
if (request.Value.ServerTimestamp != DateTime.MinValue)
{
request.Error = ResultIds.E_NOTSUPPORTED;
continue;
}
// timestamp writes not supported.
if (request.Value.SourceTimestamp != DateTime.MinValue)
{
request.Error = ResultIds.E_NOTSUPPORTED;
continue;
}
// convert to a DA compatible type.
object convertedValue = null;
request.Error = ComDaClientNodeManager.LocalToRemoteValue(request.Value.WrappedValue, out convertedValue);
if (request.Error < 0)
{
continue;
}
// add the item.
items[count1] = m_group.CreateItem(request.ItemId, 0, 0, true);
addItemRequests[count1] = request;
convertedValues[count1] = convertedValue;
count1++;
}
// create the items on the server.
m_group.ApplyChanges();
// build the list of values to write.
int count2 = 0;
int[] serverHandles = new int[count1];
object[] values = new object[count1];
WriteRequest[] writeRequests = new WriteRequest[count1];
for (int ii = 0; ii < count1; ii++)
{
// check for error on create.
GroupItem item = items[ii];
WriteRequest request = addItemRequests[ii];
if (item.ErrorId < 0)
{
request.Error = item.ErrorId;
continue;
}
serverHandles[count2] = item.ServerHandle;
values[count2] = convertedValues[ii];
writeRequests[count2] = request;
count2++;
}
if (count2 > 0)
{
// write values to the server.
int[] errors = m_group.SyncWrite(serverHandles, values, count2);
// read the errors.
for (int ii = 0; ii < count2; ii++)
{
if (errors != null && errors.Length > ii)
{
writeRequests[ii].Error = errors[ii];
}
else
{
writeRequests[ii].Error = ResultIds.E_FAIL;
}
}
// delete the items.
for (int ii = 0; ii < count1; ii++)
{
GroupItem item = items[ii];
if (item.ErrorId >= 0)
{
m_group.RemoveItem(item);
}
}
m_group.ApplyChanges();
}
}
finally
{
// delete the group and items.
m_group.Delete();
}
}
}