private void read(DataItem aItem)
{
if (aItem.SegID < 0)
{
aItem.read(mClient);
}
else
{
if (mSegActual[aItem.SegID] == false)
{
int lResult = readSegment(aItem.SegID, aItem.mMemoryType, aItem.DB);
if (lResult != 0)
{
reportError("Error reading data for group of Items: " + mClient.ErrorText(lResult));
return;
}
mSegActual[aItem.SegID] = true;
}
if (mSegActual[aItem.SegID])
{
var lValue = new byte[aItem.SegLength];
int lIndex = aItem.SegAddress - mSegStart[aItem.SegID];
if (aItem.DataType == EWordlen.S7_Bit)
{
if ((mSegBuffer[aItem.SegID][lIndex] & (1 << aItem.Bit)) != 0)
{
lValue[0] = 1;
}
else
{
lValue[0] = 0;
}
}
else
{
Array.Copy(mSegBuffer[aItem.SegID], lIndex, lValue, 0, lValue.Length);
}
aItem.setValueFromPLC(lValue);
}
}
}
private void read(DataItem aItem)
{
if (aItem.mGroup == 0)
{
aItem.read(mClient);
}
else
{
GroupDescriptor lGroupDsc = mGroups[aItem.mGroup - 1];
if (lGroupDsc.mActual == false)
{
int lResult = mClient.ReadArea((int)aItem.mMemoryType, aItem.DB, lGroupDsc.mStart, lGroupDsc.mBuffer.Length, (int)EWordlen.S7_Byte, lGroupDsc.mBuffer);
if (lResult != 0)
{
reportError("Error reading data for group of Items: " + mClient.ErrorText(lResult));
return;
}
lGroupDsc.mActual = true;
}
byte[] lValue = new byte[aItem.BufferLength];
int lIndex = aItem.Byte - lGroupDsc.mStart;
if (aItem.DataType == EWordlen.S7_Bit)
{
if ((lGroupDsc.mBuffer[lIndex] & (1 << aItem.Bit)) != 0)
{
lValue[0] = 1;
}
else
{
lValue[0] = 0;
}
}
else
{
Array.Copy(lGroupDsc.mBuffer, lIndex, lValue, 0, lValue.Length);
}
aItem.setValueFromPLC(lValue);
}
}
