/// <summary>
/// Gets the element (information object) with the specified index
/// </summary>
/// <returns>the information object at index</returns>
/// <param name="index">index of the element (starting with 0)</param>
/// <exception cref="lib60870.ASDUParsingException">Thrown when there is a problem parsing the ASDU</exception>
public InformationObject GetElement(int index)
{
if (index >= NumberOfElements)
{
throw new ASDUParsingException("Index out of range");
}
InformationObject retVal = null;
int elementSize;
switch (typeId)
{
case TypeID.M_SP_NA_1: /* 1 */
elementSize = 1;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new SinglePointInformation(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new SinglePointInformation(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_SP_TA_1: /* 2 */
elementSize = 4;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new SinglePointWithCP24Time2a(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new SinglePointWithCP24Time2a(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_DP_NA_1: /* 3 */
elementSize = 1;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new DoublePointInformation(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new DoublePointInformation(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_DP_TA_1: /* 4 */
elementSize = 4;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new DoublePointWithCP24Time2a(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new DoublePointWithCP24Time2a(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_ST_NA_1: /* 5 */
elementSize = 2;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new StepPositionInformation(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new StepPositionInformation(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_ST_TA_1: /* 6 */
elementSize = 5;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new StepPositionWithCP24Time2a(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new StepPositionWithCP24Time2a(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_BO_NA_1: /* 7 */
elementSize = 5;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new Bitstring32(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new Bitstring32(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_BO_TA_1: /* 8 */
elementSize = 8;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new Bitstring32WithCP24Time2a(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new Bitstring32WithCP24Time2a(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_ME_NA_1: /* 9 */
elementSize = 3;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new MeasuredValueNormalized(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new MeasuredValueNormalized(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_ME_TA_1: /* 10 */
elementSize = 6;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new MeasuredValueNormalizedWithCP24Time2a(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new MeasuredValueNormalizedWithCP24Time2a(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_ME_NB_1: /* 11 */
elementSize = 3;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new MeasuredValueScaled(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new MeasuredValueScaled(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_ME_TB_1: /* 12 */
elementSize = 6;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new MeasuredValueScaledWithCP24Time2a(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new MeasuredValueScaledWithCP24Time2a(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_ME_NC_1: /* 13 */
elementSize = 5;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new MeasuredValueShort(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new MeasuredValueShort(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_ME_TC_1: /* 14 */
elementSize = 8;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new MeasuredValueShortWithCP24Time2a(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new MeasuredValueShortWithCP24Time2a(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_IT_NA_1: /* 15 */
elementSize = 5;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new IntegratedTotals(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new IntegratedTotals(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_IT_TA_1: /* 16 */
elementSize = 8;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new IntegratedTotalsWithCP24Time2a(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new IntegratedTotalsWithCP24Time2a(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_EP_TA_1: /* 17 */
elementSize = 3;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new EventOfProtectionEquipment(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new EventOfProtectionEquipment(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_EP_TB_1: /* 18 */
elementSize = 7;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new PackedStartEventsOfProtectionEquipment(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new PackedStartEventsOfProtectionEquipment(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_EP_TC_1: /* 19 */
elementSize = 7;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new PackedOutputCircuitInfo(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new PackedOutputCircuitInfo(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_PS_NA_1: /* 20 */
elementSize = 5;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new PackedSinglePointWithSCD(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new PackedSinglePointWithSCD(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_ME_ND_1: /* 21 */
elementSize = 2;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new MeasuredValueNormalizedWithoutQuality(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new MeasuredValueNormalizedWithoutQuality(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
/* 22 - 29 reserved */
case TypeID.M_SP_TB_1: /* 30 */
elementSize = 8;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new SinglePointWithCP56Time2a(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new SinglePointWithCP56Time2a(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_DP_TB_1: /* 31 */
elementSize = 8;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new DoublePointWithCP56Time2a(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new DoublePointWithCP56Time2a(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_ST_TB_1: /* 32 */
elementSize = 9;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new StepPositionWithCP56Time2a(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new StepPositionWithCP56Time2a(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_BO_TB_1: /* 33 */
elementSize = 12;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new Bitstring32WithCP56Time2a(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new Bitstring32WithCP56Time2a(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_ME_TD_1: /* 34 */
elementSize = 10;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new MeasuredValueNormalizedWithCP56Time2a(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new MeasuredValueNormalizedWithCP56Time2a(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_ME_TE_1: /* 35 */
elementSize = 10;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new MeasuredValueScaledWithCP56Time2a(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new MeasuredValueScaledWithCP56Time2a(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_ME_TF_1: /* 36 */
elementSize = 12;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new MeasuredValueShortWithCP56Time2a(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new MeasuredValueShortWithCP56Time2a(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_IT_TB_1: /* 37 */
elementSize = 12;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new IntegratedTotalsWithCP56Time2a(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new IntegratedTotalsWithCP56Time2a(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_EP_TD_1: /* 38 */
elementSize = 10;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new EventOfProtectionEquipmentWithCP56Time2a(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new EventOfProtectionEquipmentWithCP56Time2a(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_EP_TE_1: /* 39 */
elementSize = 11;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new PackedStartEventsOfProtectionEquipmentWithCP56Time2a(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new PackedStartEventsOfProtectionEquipmentWithCP56Time2a(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
case TypeID.M_EP_TF_1: /* 40 */
elementSize = 11;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new PackedOutputCircuitInfoWithCP56Time2a(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new PackedOutputCircuitInfoWithCP56Time2a(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
/* 41 - 44 reserved */
case TypeID.C_SC_NA_1: /* 45 */
elementSize = parameters.SizeOfIOA + 1;
retVal = new SingleCommand(parameters, payload, index * elementSize);
break;
case TypeID.C_DC_NA_1: /* 46 */
elementSize = parameters.SizeOfIOA + 1;
retVal = new DoubleCommand(parameters, payload, index * elementSize);
break;
case TypeID.C_RC_NA_1: /* 47 */
elementSize = parameters.SizeOfIOA + 1;
retVal = new StepCommand(parameters, payload, index * elementSize);
break;
case TypeID.C_SE_NA_1: /* 48 - Set-point command, normalized value */
elementSize = parameters.SizeOfIOA + 3;
retVal = new SetpointCommandNormalized(parameters, payload, index * elementSize);
break;
case TypeID.C_SE_NB_1: /* 49 - Set-point command, scaled value */
elementSize = parameters.SizeOfIOA + 3;
retVal = new SetpointCommandScaled(parameters, payload, index * elementSize);
break;
case TypeID.C_SE_NC_1: /* 50 - Set-point command, short floating point number */
elementSize = parameters.SizeOfIOA + 5;
retVal = new SetpointCommandShort(parameters, payload, index * elementSize);
break;
case TypeID.C_BO_NA_1: /* 51 - Bitstring command */
elementSize = parameters.SizeOfIOA + 4;
retVal = new Bitstring32Command(parameters, payload, index * elementSize);
break;
/* 52 - 57 reserved */
case TypeID.C_SC_TA_1: /* 58 - Single command with CP56Time2a */
elementSize = parameters.SizeOfIOA + 8;
retVal = new SingleCommandWithCP56Time2a(parameters, payload, index * elementSize);
break;
case TypeID.C_DC_TA_1: /* 59 - Double command with CP56Time2a */
elementSize = parameters.SizeOfIOA + 8;
retVal = new DoubleCommandWithCP56Time2a(parameters, payload, index * elementSize);
break;
case TypeID.C_RC_TA_1: /* 60 - Step command with CP56Time2a */
elementSize = parameters.SizeOfIOA + 8;
retVal = new StepCommandWithCP56Time2a(parameters, payload, index * elementSize);
break;
case TypeID.C_SE_TA_1: /* 61 - Setpoint command, normalized value with CP56Time2a */
elementSize = parameters.SizeOfIOA + 10;
retVal = new SetpointCommandNormalizedWithCP56Time2a(parameters, payload, index * elementSize);
break;
case TypeID.C_SE_TB_1: /* 62 - Setpoint command, scaled value with CP56Time2a */
elementSize = parameters.SizeOfIOA + 10;
retVal = new SetpointCommandScaledWithCP56Time2a(parameters, payload, index * elementSize);
break;
case TypeID.C_SE_TC_1: /* 63 - Setpoint command, short value with CP56Time2a */
elementSize = parameters.SizeOfIOA + 12;
retVal = new SetpointCommandShortWithCP56Time2a(parameters, payload, index * elementSize);
break;
case TypeID.C_BO_TA_1: /* 64 - Bitstring command with CP56Time2a */
elementSize = parameters.SizeOfIOA + 11;
retVal = new Bitstring32CommandWithCP56Time2a(parameters, payload, index * elementSize);
break;
/* 65 - 69 reserved */
case TypeID.M_EI_NA_1: /* 70 - End of initialization */
elementSize = parameters.SizeOfCA + 1;
retVal = new EndOfInitialization(parameters, payload, index * elementSize);
break;
case TypeID.C_IC_NA_1: /* 100 - Interrogation command */
elementSize = parameters.SizeOfIOA + 1;
retVal = new InterrogationCommand(parameters, payload, index * elementSize);
break;
case TypeID.C_CI_NA_1: /* 101 - Counter interrogation command */
elementSize = parameters.SizeOfIOA + 1;
retVal = new CounterInterrogationCommand(parameters, payload, index * elementSize);
break;
case TypeID.C_RD_NA_1: /* 102 - Read command */
elementSize = parameters.SizeOfIOA;
retVal = new ReadCommand(parameters, payload, index * elementSize);
break;
case TypeID.C_CS_NA_1: /* 103 - Clock synchronization command */
elementSize = parameters.SizeOfIOA + 7;
retVal = new ClockSynchronizationCommand(parameters, payload, index * elementSize);
break;
case TypeID.C_TS_NA_1: /* 104 - Test command */
elementSize = parameters.SizeOfIOA + 2;
retVal = new TestCommand(parameters, payload, index * elementSize);
break;
case TypeID.C_RP_NA_1: /* 105 - Reset process command */
elementSize = parameters.SizeOfIOA + 1;
retVal = new ResetProcessCommand(parameters, payload, index * elementSize);
break;
case TypeID.C_CD_NA_1: /* 106 - Delay acquisition command */
elementSize = parameters.SizeOfIOA + 2;
retVal = new DelayAcquisitionCommand(parameters, payload, index * elementSize);
break;
case TypeID.C_TS_TA_1: /* 107 - Test command with CP56Time2a */
elementSize = parameters.SizeOfIOA + 9;
retVal = new TestCommandWithCP56Time2a(parameters, payload, index * elementSize);
break;
/* C_TS_TA_1 (107) is handled by the stack automatically */
case TypeID.P_ME_NA_1: /* 110 - Parameter of measured values, normalized value */
elementSize = parameters.SizeOfIOA + 3;
retVal = new ParameterNormalizedValue(parameters, payload, index * elementSize);
break;
case TypeID.P_ME_NB_1: /* 111 - Parameter of measured values, scaled value */
elementSize = parameters.SizeOfIOA + 3;
retVal = new ParameterScaledValue(parameters, payload, index * elementSize);
break;
case TypeID.P_ME_NC_1: /* 112 - Parameter of measured values, short floating point number */
elementSize = parameters.SizeOfIOA + 5;
retVal = new ParameterFloatValue(parameters, payload, index * elementSize);
break;
case TypeID.P_AC_NA_1: /* 113 - Parameter for activation */
elementSize = parameters.SizeOfIOA + 1;
retVal = new ParameterActivation(parameters, payload, index * elementSize);
break;
case TypeID.F_FR_NA_1: /* 120 - File ready */
retVal = new FileReady(parameters, payload, 0, false);
break;
case TypeID.F_SR_NA_1: /* 121 - Section ready */
retVal = new SectionReady(parameters, payload, 0, false);
break;
case TypeID.F_SC_NA_1: /* 122 - Call directory, select file, call file, call section */
retVal = new FileCallOrSelect(parameters, payload, 0, false);
break;
case TypeID.F_LS_NA_1: /* 123 - Last section, last segment */
retVal = new FileLastSegmentOrSection(parameters, payload, 0, false);
break;
case TypeID.F_AF_NA_1: /* 124 - ACK file, ACK section */
retVal = new FileACK(parameters, payload, 0, false);
break;
case TypeID.F_SG_NA_1: /* 125 - Segment */
retVal = new FileSegment(parameters, payload, 0, false);
break;
case TypeID.F_DR_TA_1: /* 126 - Directory */
elementSize = 13;
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = new FileDirectory(parameters, payload, parameters.SizeOfIOA + (index * elementSize), true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = new FileDirectory(parameters, payload, index * (parameters.SizeOfIOA + elementSize), false);
}
break;
/* 114 - 119 reserved */
default:
if (privateObjectTypes != null)
{
IPrivateIOFactory ioFactory = privateObjectTypes.GetFactory(typeId);
if (ioFactory != null)
{
elementSize = parameters.SizeOfIOA + ioFactory.GetEncodedSize();
if (IsSequence)
{
int ioa = InformationObject.ParseInformationObjectAddress(parameters, payload, 0);
retVal = ioFactory.Decode(parameters, payload, index * elementSize, true);
retVal.ObjectAddress = ioa + index;
}
else
{
retVal = ioFactory.Decode(parameters, payload, index * elementSize, false);
}
}
}
break;
}
if (retVal == null)
{
throw new ASDUParsingException("Unknown ASDU type id:" + typeId);
}
return(retVal);
}
private bool HandleApplicationLayer(byte[] msg, int userDataStart, int userDataLength)
{
ASDU asdu;
try {
asdu = new ASDU(parameters, buffer, userDataStart, userDataStart + userDataLength);
}
catch (ASDUParsingException e) {
DebugLog("ASDU parsing failed: " + e.Message);
return(false);
}
bool messageHandled = false;
switch (asdu.TypeId)
{
case TypeID.C_IC_NA_1: /* 100 - interrogation command */
DebugLog("Rcvd interrogation command C_IC_NA_1");
if ((asdu.Cot == CauseOfTransmission.ACTIVATION) || (asdu.Cot == CauseOfTransmission.DEACTIVATION))
{
if (this.interrogationHandler != null)
{
InterrogationCommand irc = (InterrogationCommand)asdu.GetElement(0);
if (this.interrogationHandler(this.InterrogationHandlerParameter, this, asdu, irc.QOI))
{
messageHandled = true;
}
}
}
else
{
asdu.Cot = CauseOfTransmission.UNKNOWN_CAUSE_OF_TRANSMISSION;
this.SendASDU(asdu);
}
break;
case TypeID.C_CI_NA_1: /* 101 - counter interrogation command */
DebugLog("Rcvd counter interrogation command C_CI_NA_1");
if ((asdu.Cot == CauseOfTransmission.ACTIVATION) || (asdu.Cot == CauseOfTransmission.DEACTIVATION))
{
if (this.counterInterrogationHandler != null)
{
CounterInterrogationCommand cic = (CounterInterrogationCommand)asdu.GetElement(0);
if (this.counterInterrogationHandler(this.counterInterrogationHandlerParameter, this, asdu, cic.QCC))
{
messageHandled = true;
}
}
}
else
{
asdu.Cot = CauseOfTransmission.UNKNOWN_CAUSE_OF_TRANSMISSION;
this.SendASDU(asdu);
}
break;
case TypeID.C_RD_NA_1: /* 102 - read command */
DebugLog("Rcvd read command C_RD_NA_1");
if (asdu.Cot == CauseOfTransmission.REQUEST)
{
DebugLog("Read request for object: " + asdu.Ca);
if (this.readHandler != null)
{
ReadCommand rc = (ReadCommand)asdu.GetElement(0);
if (this.readHandler(this.readHandlerParameter, this, asdu, rc.ObjectAddress))
{
messageHandled = true;
}
}
}
else
{
asdu.Cot = CauseOfTransmission.UNKNOWN_CAUSE_OF_TRANSMISSION;
this.SendASDU(asdu);
}
break;
case TypeID.C_CS_NA_1: /* 103 - Clock synchronization command */
DebugLog("Rcvd clock sync command C_CS_NA_1");
if (asdu.Cot == CauseOfTransmission.ACTIVATION)
{
if (this.clockSynchronizationHandler != null)
{
ClockSynchronizationCommand csc = (ClockSynchronizationCommand)asdu.GetElement(0);
if (this.clockSynchronizationHandler(this.clockSynchronizationHandlerParameter,
this, asdu, csc.NewTime))
{
messageHandled = true;
}
}
}
else
{
asdu.Cot = CauseOfTransmission.UNKNOWN_CAUSE_OF_TRANSMISSION;
this.SendASDU(asdu);
}
break;
case TypeID.C_TS_NA_1: /* 104 - test command */
DebugLog("Rcvd test command C_TS_NA_1");
if (asdu.Cot != CauseOfTransmission.ACTIVATION)
{
asdu.Cot = CauseOfTransmission.UNKNOWN_CAUSE_OF_TRANSMISSION;
}
else
{
asdu.Cot = CauseOfTransmission.ACTIVATION_CON;
}
this.SendASDU(asdu);
messageHandled = true;
break;
case TypeID.C_RP_NA_1: /* 105 - Reset process command */
DebugLog("Rcvd reset process command C_RP_NA_1");
if (asdu.Cot == CauseOfTransmission.ACTIVATION)
{
if (this.resetProcessHandler != null)
{
ResetProcessCommand rpc = (ResetProcessCommand)asdu.GetElement(0);
if (this.resetProcessHandler(this.resetProcessHandlerParameter,
this, asdu, rpc.QRP))
{
messageHandled = true;
}
}
}
else
{
asdu.Cot = CauseOfTransmission.UNKNOWN_CAUSE_OF_TRANSMISSION;
this.SendASDU(asdu);
}
break;
case TypeID.C_CD_NA_1: /* 106 - Delay acquisition command */
DebugLog("Rcvd delay acquisition command C_CD_NA_1");
if ((asdu.Cot == CauseOfTransmission.ACTIVATION) || (asdu.Cot == CauseOfTransmission.SPONTANEOUS))
{
if (this.delayAcquisitionHandler != null)
{
DelayAcquisitionCommand dac = (DelayAcquisitionCommand)asdu.GetElement(0);
if (this.delayAcquisitionHandler(this.delayAcquisitionHandlerParameter,
this, asdu, dac.Delay))
{
messageHandled = true;
}
}
}
else
{
asdu.Cot = CauseOfTransmission.UNKNOWN_CAUSE_OF_TRANSMISSION;
this.SendASDU(asdu);
}
break;
}
if (messageHandled == false)
{
messageHandled = fileServer.HandleFileAsdu(asdu);
}
if ((messageHandled == false) && (this.asduHandler != null))
{
if (this.asduHandler(this.asduHandlerParameter, this, asdu))
{
messageHandled = true;
}
}
if (messageHandled == false)
{
asdu.Cot = CauseOfTransmission.UNKNOWN_TYPE_ID;
this.SendASDU(asdu);
}
return(true);
}