public PlcMemoryValue ReadAsValue(PlcMemoryInfo plcMemoryInfo)
{
// 固定値の場合即座に返す
if (plcMemoryInfo.ConstantValue != null)
{
return(new PlcMemoryValue(plcMemoryInfo, plcMemoryInfo.ConstantValue));
}
Object value;
// Offset/Length のCache情報への置換
var readCache = StandardizeAccess(plcMemoryInfo);
// 対象Cacheの取得
var targetCache = Caches.First(w => w.WithinValue(readCache.ReadOffset));
// 対象値の取得
var beginOffset = (int)(readCache.ReadOffset - targetCache.ReadOffset);
var chacedValues = targetCache.Values.Skip(beginOffset).Take((int)readCache.Length);
switch (plcMemoryInfo.AccessSize)
{
case AccessSize.BIT:
value = ((BitPlace)chacedValues.FirstOrDefault() & plcMemoryInfo.BitPlace) != BitPlace.NOBIT;
break;
case AccessSize.WORD:
var valueWord = BitConverter.GetBytes(chacedValues.FirstOrDefault());
value = new Byte[2] {
valueWord[1], valueWord[0]
};
break;
case AccessSize.WORD2SmallInt:
value = chacedValues.FirstOrDefault();
//value = (UInt16) (((valueWord & 0xFF00) >> 8) | ((valueWord & 0x00FF) << 8));
break;
case AccessSize.BYTE:
value = (Byte)(chacedValues.FirstOrDefault());
break;
case AccessSize.DWORD:
var values = chacedValues.Select(s => BitConverter.GetBytes(s)).ToArray();
value = new Byte[4] {
values[1][1], values[1][0], values[0][1], values[0][0]
};
break;
default:
value = null;
break;
}
return(new PlcMemoryValue(plcMemoryInfo, value));
}
public void SetCurrentCacheById(int id)
{
CurrentCache = Caches.First(c => c.Id == id);
}
