/// <summary>
/// 解析报文
/// </summary>
/// <param name="parameters"></param>
/// <param name="msg"></param>
/// <param name="startIndex"></param>
/// <param name="isSequence"></param>
internal DoublePointInformation(ConnectionParameters parameters, byte[] msg, int startIndex, bool isSequence) :
base(parameters, msg, startIndex, isSequence)
{
if (!isSequence)
{
startIndex += parameters.SizeOfIOA; /* skip IOA */
}
/* parse DIQ (double point information with qualitiy) */
byte diq = msg[startIndex++];
value = (DoublePointValue)(diq & 0x03);
quality = new QualityDescriptor((byte)(diq & 0xf0));
}
internal DoublePointInformation(ApplicationLayerParameters parameters, byte[] msg, int startIndex, bool isSequence)
: base(parameters, msg, startIndex, isSequence)
{
if (!isSequence)
{
startIndex += parameters.SizeOfIOA; /* skip IOA */
}
if ((msg.Length - startIndex) < GetEncodedSize())
{
throw new ASDUParsingException("Message too small");
}
/* parse DIQ (double point information with qualitiy) */
byte diq = msg[startIndex++];
value = (DoublePointValue)(diq & 0x03);
quality = new QualityDescriptor((byte)(diq & 0xf0));
}
/// <summary>
/// 创建
/// </summary>
/// <param name="ioa"></param>
/// <param name="value"></param>
/// <param name="quality"></param>
/// <param name="timestamp"></param>
public DoublePointWithCP56Time2a(int ioa, DoublePointValue value, QualityDescriptor quality, CP56Time2a timestamp)
: base(ioa, value, quality)
{
this.timestamp = timestamp;
}
/// <summary>
/// 使用地址、值、品质描述词创建双点信息
/// </summary>
/// <param name="ioa"></param>
/// <param name="value"></param>
/// <param name="quality"></param>
public DoublePointInformation(int ioa, DoublePointValue value, QualityDescriptor quality)
: base(ioa)
{
this.value = value;
this.quality = quality;
}
