调用堆栈大小？
Call Stack size?
来自密歇根的问候，
我有一个程序 运行s 连续（记录数据）它在一个 Sub ("logging data" Sub) 的 While 循环内 运行s，然后当日志文件变成 "full"，它跳转到另一个 Sub 创建一个新文件，然后跳回到 "logging data" Sub 继续。不管怎样，它一直这样做，并且可以 运行 像这样持续几个小时，创建 100 多个文件或更多数据。问题是程序在某个时候崩溃并且它总是在程序的这一部分崩溃（这两个子之一，虽然我还没有确定是哪一个。当我 运行 机器上的调试器在其中程序已部署，调用堆栈相当大。我想知道这是否是一个问题，以及如何管理。这可能是程序崩溃的原因（调用堆栈变得太大？）。我已经得到了一些至少在一次崩溃中出现内存异常错误。我昨天对代码进行了一些编辑以尝试缓解这种情况。我遇到的最后一次崩溃（今天早上我进入办公室时）是空引用异常错误，尽管我无法确定位置，除非我 运行 我的开发机器中的程序处于调试模式，我计划下一步这样做以准确捕获这两个 Sub 中的任何一个发生崩溃的代码行。我会需要像我说的那样 运行 一整夜，程序可以 运行 几个小时e 发生崩溃。无论如何，问题是关于调用堆栈的。大调用堆栈是个问题吗？ managed/cleared 怎么样？
谢谢，
D
Public Sub dataAcquiring()
'Receive the collection of channels in this sub and append data to each of the channels
'Set up the channel group
Dim message1 As String = "The data file may have been deleted or moved prior to a new data file and directory being created. Check the main 'Data' directory and be sure the file exists, or simply create a new data file."
Dim testBool As Boolean = False
'Set the global variable to True if running the application from the development machine in debug mode. Otherwise, initialize it to false for deployment.
If Connectlocal = True Then
statsFile = "C:\Users\dmckin01\Desktop\Data\" & folderName & "\" & dataFileName & "_stats.csv"
Else : statsFile = "D:\Data\" & folderName & "\" & dataFileName & "_stats.csv"
End If
Try
logFile.Open()
Catch ex As Exception
MessageBox.Show(Me, ex.Message & message1, "File not found", MessageBoxButtons.OK, MessageBoxIcon.Error)
cbRecord.Checked = False
Return
End Try
Dim i As Integer = 0, n As Integer = 0, hvar As Integer, value As Single, count As Integer = 0, maxValue As Single
Dim b As Boolean = False, returnValue As Type, stringVar As String, lastValidNumber As Integer
Dim dtype As System.Type
Dim channelGroupName As String = "Main Group"
Dim channelGroup As TdmsChannelGroup = New TdmsChannelGroup(channelGroupName)
Dim channelGroups As TdmsChannelGroupCollection = logFile.GetChannelGroups()
If (channelGroups.Contains(channelGroupName)) Then
channelGroup = channelGroups(channelGroupName)
Else
channelGroups.Add(channelGroup)
End If
'Set up the TDMS channels
Dim Names As String() = New String(13) {" Spindle Speed (rpm) ", " Oil Flow (ccm) ", " Torque (Nm) ", " LVDT Displacement (mm) ", " Linear Pot Displacement (mm) ", _
" Pneu. Actuator (0=OFF, 1=ON) ", " Elec. Actuator (0=OFF, 1=ON) ", " Hydr. Actuator (0=OFF, 1=ON) ", _
" Upper Tank Oil Temp. (°F) ", " Lower Tank Oil Temp. (°F) ", " Exit Oil Temp. (°F) ", _
" Inlet Oil Temp. (°F) ", " Part Temp. (°F) ", " Time Stamp "}
Dim dataArrayNames As String() = New String(13) {"arrSpeed", "arrFlow", "arrTorque", "arrLVDT", "arrLinPot", "arrActPneu", "arrActElec", "arrActHydr", _
"arrUpperOil", "arrLowerOil", "arrExitOil", "arrInletOil", "arrTestPart", "arrTimeStamp"}
Dim OPCTagNames As String() = New String(13) {"peakTorque", "peakTorqueSpeed", "peakTorquePlatePos", "timeToPeakTorque", "firstPeakTorque", "firstPeakTorqueSpeed", _
"firstPeakTorquePlatePos", "timeToFirstPeakTorque", "peakDecel", "peakJerk", "engagementSpeed", "slidePlateSpeed", _
"timeOfEngagement", "totalEnergy"}
Dim bools As Boolean() = New Boolean(13) {recSpeed, recOilFlow, recTorque, recLVDT, recLinPot, recActPneu, recActElec, recActHydr, recUpperOil, recLowerOil, _
recExitOil, recInletOil, recTestPart, recTimeStamp}
'Instantiate the TDMS channels to be used. We have to do this each and every time this Sub is executed because National Instruments
'does not have a method to 'clear' the channel group.
Dim ch0 As TdmsChannel = New TdmsChannel(Names(0), TdmsDataType.Float) 'spindle speed
Dim ch1 As TdmsChannel = New TdmsChannel(Names(1), TdmsDataType.Float) 'oil flow
Dim ch2 As TdmsChannel = New TdmsChannel(Names(2), TdmsDataType.Float) 'torque
Dim ch3 As TdmsChannel = New TdmsChannel(Names(3), TdmsDataType.Float) 'actuator position (LVDT)
Dim ch4 As TdmsChannel = New TdmsChannel(Names(4), TdmsDataType.Float) 'actuator position (LINEAR POT)
Dim ch5 As TdmsChannel = New TdmsChannel(Names(5), TdmsDataType.Float) 'actuator state (pneu)
Dim ch6 As TdmsChannel = New TdmsChannel(Names(6), TdmsDataType.Float) 'actuator state (elec)
Dim ch7 As TdmsChannel = New TdmsChannel(Names(7), TdmsDataType.Float) 'actuator state (hydr)
Dim ch8 As TdmsChannel = New TdmsChannel(Names(8), TdmsDataType.Float) 'upper oil tank temp
Dim ch9 As TdmsChannel = New TdmsChannel(Names(9), TdmsDataType.Float) 'lower oil tank temp
Dim ch10 As TdmsChannel = New TdmsChannel(Names(10), TdmsDataType.Float) 'Exit oil tank temp
Dim ch11 As TdmsChannel = New TdmsChannel(Names(11), TdmsDataType.Float) 'Inlet oil temp
Dim ch12 As TdmsChannel = New TdmsChannel(Names(12), TdmsDataType.Float) 'Part temp
Dim ch13 As TdmsChannel = New TdmsChannel(Names(13), TdmsDataType.String) 'Time stamp
Dim Channels As TdmsChannelCollection
Dim chans As TdmsChannel() = New TdmsChannel(13) {ch0, ch1, ch2, ch3, ch4, ch5, ch6, ch7, ch8, ch9, ch10, ch11, ch12, ch13}
Channels = channelGroup.GetChannels()
ch0.UnitString = "RPM" : ch0.Description = "Rotational speed of the spindle shaft."
ch1.UnitString = "CCM" : ch1.Description = "Oil flow from the specimen pump."
ch2.UnitString = "Nm" : ch2.Description = "Torque from the torque cell."
ch3.UnitString = "mm" : ch3.Description = "Linear displacement of the linear velocity displacement transducer."
ch4.UnitString = "mm" : ch4.Description = "Linear displacement of the linear potentiometer."
ch5.UnitString = "BIT" : ch5.Description = "Binary state of the pneumatic actuator (0=OFF, 1=ON)."
ch6.UnitString = "BIT" : ch6.Description = "Binary state of the electric actuator (0=OFF, 1=ON)."
ch7.UnitString = "BIT" : ch7.Description = "Binary state of the hydraulic actuator (0=OFF, 1=ON)."
ch8.UnitString = "°F" : ch8.Description = "Upper tubular tank oil temperature."
ch9.UnitString = "°F" : ch9.Description = "Lower (main) tank oil temperature."
ch10.UnitString = "°F" : ch10.Description = "Thermocouple (Location: Remote rack, EL3318, Ch.2)."
ch11.UnitString = "°F" : ch11.Description = "Thermocouple (Location: Remote rack, EL3318, Ch.3)."
ch12.UnitString = "°F" : ch12.Description = "Thermocouple (Location: Remote rack, EL3318, Ch.1)"
ch13.UnitString = "nS" : ch13.Description = "Time when the data was captured."
'The only TDMS channels that get added to the collection are the ones that the user selects on the 'Configure Data File' form.
'That is what this If-Then block is for.
If Channels.Count = 0 Then
jArray.Clear()
plcArrayNames.Clear()
For Each [boolean] In bools
If [boolean] = True Then
Channels.Add(chans(i))
Channels = channelGroup.GetChannels 'new
jArray.Add(jaggedarray(i))
plcArrayNames.Add(dataArrayNames(i))
End If
i += 1
Next
End If
'At this point, we are ready to write data to the TDMS file.
'Establish the line of communication to the PLC so we can read the data arrays.
Dim tcClient As New TwinCAT.Ads.TcAdsClient()
Dim dataStreamRead As TwinCAT.Ads.AdsStream = New AdsStream
Dim binaryReader As System.IO.BinaryReader = New BinaryReader(dataStreamRead)
If Connectlocal = True Then
tcClient.Connect(851) 'local
Else : tcClient.Connect(AMSNetID, 851)
End If
While cbRecord.Checked = True
b = tcClient2.ReadAny(DRHvar, GetType(Boolean)) 'read the handshaking variable from the PLC
If b = False Then
'This For loop reads the appropriate arrays in the PLC and then writes that data to the appropriate arrays here.
'The arrays in here will eventually get written to the TDMS file.
i = 0
n = 0
writingData = True
For Each [string] In dataArrayNames
If dataArrayNames(n) = plcArrayNames(i) Then
hvar = tcClient.CreateVariableHandle("IO_HS.Data." & dataArrayNames(n))
value = 0
returnValue = jArray(i).GetType
If returnValue.Name = "Single[]" Then
dataStreamRead.SetLength(jArray(0).Length * 4)
dataStreamRead.Position = 0
tcClient.Read(hvar, dataStreamRead)
For Each [element] In jArray(0)
jArray(i)(value) = binaryReader.ReadSingle()
value += 1
Next
ElseIf returnValue.Name = "Int64[]" Then
dataStreamRead.SetLength(jArray(0).Length * 8)
dataStreamRead.Position = 0
tcClient.Read(hvar, dataStreamRead)
For Each [element] In jArray(0)
jArray(i)(value) = binaryReader.ReadInt64()
value += 1
Next
ElseIf returnValue.Name = "String[]" Then
dataStreamRead.SetLength(jArray(0).Length * 32)
dataStreamRead.Position = 0
tcClient.Read(hvar, dataStreamRead)
For Each [element] In jArray(0)
stringVar = binaryReader.ReadChars(32)
lastValidNumber = Math.Max(Math.Max(Math.Max(Math.Max(Math.Max(Math.Max(Math.Max(Math.Max(Math.Max(stringVar.LastIndexOf("0"), stringVar.LastIndexOf("1")), stringVar.LastIndexOf("2")), stringVar.LastIndexOf("3")), stringVar.LastIndexOf("4")), stringVar.LastIndexOf("5")), stringVar.LastIndexOf("6")), stringVar.LastIndexOf("7")), stringVar.LastIndexOf("8")), stringVar.LastIndexOf("9"))
If lastValidNumber > 0 Then
jArray(i)(value) = stringVar.Substring(0, lastValidNumber + 1)
Else
jArray(i)(value) = "Invalid Timestamp"
End If
value += 1
Next
End If
tcClient.DeleteVariableHandle(hvar)
i += 1
If i = plcArrayNames.Count Then
Exit For
End If
End If
n += 1
Next
'This For loop appends/writes the data from each array to the actual TDMS file.
i = 0
For Each [array] In jArray
dtype = Channels(i).GetDataType
If dtype.Name = "Int32" Then
Channels(i).AppendData(Of Integer)(jArray(i))
ElseIf dtype.Name = "Single" Then
Channels(i).AppendData(Of Single)(jArray(i))
ElseIf dtype.Name = "Boolean" Then
Channels(i).AppendData(Of Boolean)(jArray(i))
ElseIf dtype.Name = "String" Then
Channels(i).AppendData(Of String)(jArray(i))
End If
i += 1
Next
Try
'Call the DataAnalyzer dll to write stats of the cycle to stats CSV file. Also plot the data of the cycle on the chart on the UI
Invoke(Sub() DataAnalyzer.Analyze(arrSpeed, arrTorque, arrLinPot))
Invoke(Sub() plotData())
Invoke(Sub() DataAnalyzer.WriteData(statsFile, logFile.Path, arrTimeStamp(0), plcData.cyclesCompleted))
Catch ex As Exception
testBool = True
End Try
'Populate the datagridview cells with the data values
dgvStats.Item(1, 0).Value = DataAnalyzer.peakTorque
dgvStats.Item(1, 1).Value = DataAnalyzer.engagementSpeed
dgvStats.Item(1, 2).Value = DataAnalyzer.slidePlateSpeed
dgvStats.Item(1, 3).Value = plcData.bimbaTravSpeed
dgvStats.Item(1, 4).Value = plcData.lastCycleTime
dgvStats.Item(1, 5).Value = plcData.currentCycleTime
dgvStats.Item(1, 6).Value = plcData.meanCycleTime
dgvStats.Item(1, 7).Value = plcData.cyclesPerHr
'NEW CODE to Evalute the elements in the arrTorque array to get the Max value recorded
maxValue = 0
For Each [element] In arrTorque
maxValue = Math.Max(maxValue, element)
Next
If maxValue <= plcData.torqueAlrmSP And plcData.cycleStarted Then
torqueLowCount += 1
Else : torqueLowCount = 0
End If
'Let the PLC know that we received the data and are now ready for the next set (handshaking variable).
tcClient2.WriteAny(DRHvar, True)
End If
'If the data count in the first column of the TDMS file exceeds the number here, then
'close the file and create a new one, then continue to append/write data
If Channels(0).DataCount >= 1020000 Then
For Each channel As TdmsChannel In chans
channel.Dispose() : channel = Nothing
Next
chans = Nothing
channelGroup.Dispose() : channelGroup = Nothing
If tcClient.IsConnected Then
dataStreamRead.Dispose() : dataStreamRead = Nothing
tcClient.Disconnect() : tcClient.Dispose() : tcClient = Nothing
End If
'Jump to the CreateNewFile Sub to create the next TDMS file
CreateNewFile()
End If
End While
If logFile.IsOpen = True Then
logFile.Close()
End If
If tcClient.IsConnected Then
dataStreamRead.Dispose() : dataStreamRead = Nothing
tcClient.Disconnect() : tcClient.Dispose() : tcClient = Nothing
End If
writingData = False
End Sub
Private Sub CreateNewFile()
'Create the new folder where the data file/s will reside
Dim newFilename As String = dataFileName & "_" & fileNum
Dim customFilePropertyNames() As String = {"Date"}
Dim customFilePropertyVals() As String = {""}
Dim newAuthor As String = logFile.Author
Dim newDescription As String = logFile.Description
Dim newTitle As String = logFile.Title
Dim newPath1 As String = "C:\Users\dmckin01\Desktop\Data\" & folderName
Dim newPath2 As String = "D:\Data\" & folderName
fileNum += 1
'Create the TDMS file and save it to the user specified directory
customFilePropertyVals(0) = Date.Today.ToShortDateString()
logFile.Close() 'Close the old logfile after we've gotten values/properties from it
logFile.Dispose() : logFile = Nothing
Try
If Connectlocal = True Then
logFile = New TdmsFile(newPath1 & "\" & newFilename & ".tdms", New TdmsFileOptions())
Else : logFile = New TdmsFile(newPath2 & "\" & newFilename & ".tdms", New TdmsFileOptions())
End If
Catch ex As Exception
MessageBox.Show("Directory not created. Make sure the TDMS file and/or directory that you are referencing are not already currently opened.", "Directory Creation Failed", MessageBoxButtons.OK, MessageBoxIcon.Error)
Exit Sub
End Try
logFile.Author = newAuthor
logFile.Description = newDescription
logFile.Title = newTitle
logFile.AddProperty(customFilePropertyNames(0), TdmsPropertyDataType.String, customFilePropertyVals(0))
logFile.AutoSave = True
dataAcquiring()
End Sub
堆栈错误总是由代码中的循环自行回调引起的。通常由 属性 设置处理程序引起，这些处理程序设置其他属性，而这些属性又会尝试设置初始 属性。有时很难确定它们。
在你的例子中，你调用了日志函数
dataAcquiring()
End Sub
然后文件创建例程结束...这是一个严重的错误。
每次启动一个新文件时，您都会启动一个新的日志循环实例，而旧的则保留在堆栈中...用完空间只是时间问题
在这种情况下...创建例程应该退出...
但是，如果是我，我会将该代码设为 return 为真或为假的函数。如果由于某种原因无法创建文件并在主循环中优雅地处理它，请 return false。
来自密歇根的问候，
我有一个程序 运行s 连续（记录数据）它在一个 Sub ("logging data" Sub) 的 While 循环内 运行s，然后当日志文件变成 "full"，它跳转到另一个 Sub 创建一个新文件，然后跳回到 "logging data" Sub 继续。不管怎样，它一直这样做，并且可以 运行 像这样持续几个小时，创建 100 多个文件或更多数据。问题是程序在某个时候崩溃并且它总是在程序的这一部分崩溃（这两个子之一，虽然我还没有确定是哪一个。当我 运行 机器上的调试器在其中程序已部署，调用堆栈相当大。我想知道这是否是一个问题，以及如何管理。这可能是程序崩溃的原因（调用堆栈变得太大？）。我已经得到了一些至少在一次崩溃中出现内存异常错误。我昨天对代码进行了一些编辑以尝试缓解这种情况。我遇到的最后一次崩溃（今天早上我进入办公室时）是空引用异常错误，尽管我无法确定位置，除非我 运行 我的开发机器中的程序处于调试模式，我计划下一步这样做以准确捕获这两个 Sub 中的任何一个发生崩溃的代码行。我会需要像我说的那样 运行 一整夜，程序可以 运行 几个小时e 发生崩溃。无论如何，问题是关于调用堆栈的。大调用堆栈是个问题吗？ managed/cleared 怎么样？
谢谢， D
Public Sub dataAcquiring()
'Receive the collection of channels in this sub and append data to each of the channels
'Set up the channel group
Dim message1 As String = "The data file may have been deleted or moved prior to a new data file and directory being created. Check the main 'Data' directory and be sure the file exists, or simply create a new data file."
Dim testBool As Boolean = False
'Set the global variable to True if running the application from the development machine in debug mode. Otherwise, initialize it to false for deployment.
If Connectlocal = True Then
statsFile = "C:\Users\dmckin01\Desktop\Data\" & folderName & "\" & dataFileName & "_stats.csv"
Else : statsFile = "D:\Data\" & folderName & "\" & dataFileName & "_stats.csv"
End If
Try
logFile.Open()
Catch ex As Exception
MessageBox.Show(Me, ex.Message & message1, "File not found", MessageBoxButtons.OK, MessageBoxIcon.Error)
cbRecord.Checked = False
Return
End Try
Dim i As Integer = 0, n As Integer = 0, hvar As Integer, value As Single, count As Integer = 0, maxValue As Single
Dim b As Boolean = False, returnValue As Type, stringVar As String, lastValidNumber As Integer
Dim dtype As System.Type
Dim channelGroupName As String = "Main Group"
Dim channelGroup As TdmsChannelGroup = New TdmsChannelGroup(channelGroupName)
Dim channelGroups As TdmsChannelGroupCollection = logFile.GetChannelGroups()
If (channelGroups.Contains(channelGroupName)) Then
channelGroup = channelGroups(channelGroupName)
Else
channelGroups.Add(channelGroup)
End If
'Set up the TDMS channels
Dim Names As String() = New String(13) {" Spindle Speed (rpm) ", " Oil Flow (ccm) ", " Torque (Nm) ", " LVDT Displacement (mm) ", " Linear Pot Displacement (mm) ", _
" Pneu. Actuator (0=OFF, 1=ON) ", " Elec. Actuator (0=OFF, 1=ON) ", " Hydr. Actuator (0=OFF, 1=ON) ", _
" Upper Tank Oil Temp. (°F) ", " Lower Tank Oil Temp. (°F) ", " Exit Oil Temp. (°F) ", _
" Inlet Oil Temp. (°F) ", " Part Temp. (°F) ", " Time Stamp "}
Dim dataArrayNames As String() = New String(13) {"arrSpeed", "arrFlow", "arrTorque", "arrLVDT", "arrLinPot", "arrActPneu", "arrActElec", "arrActHydr", _
"arrUpperOil", "arrLowerOil", "arrExitOil", "arrInletOil", "arrTestPart", "arrTimeStamp"}
Dim OPCTagNames As String() = New String(13) {"peakTorque", "peakTorqueSpeed", "peakTorquePlatePos", "timeToPeakTorque", "firstPeakTorque", "firstPeakTorqueSpeed", _
"firstPeakTorquePlatePos", "timeToFirstPeakTorque", "peakDecel", "peakJerk", "engagementSpeed", "slidePlateSpeed", _
"timeOfEngagement", "totalEnergy"}
Dim bools As Boolean() = New Boolean(13) {recSpeed, recOilFlow, recTorque, recLVDT, recLinPot, recActPneu, recActElec, recActHydr, recUpperOil, recLowerOil, _
recExitOil, recInletOil, recTestPart, recTimeStamp}
'Instantiate the TDMS channels to be used. We have to do this each and every time this Sub is executed because National Instruments
'does not have a method to 'clear' the channel group.
Dim ch0 As TdmsChannel = New TdmsChannel(Names(0), TdmsDataType.Float) 'spindle speed
Dim ch1 As TdmsChannel = New TdmsChannel(Names(1), TdmsDataType.Float) 'oil flow
Dim ch2 As TdmsChannel = New TdmsChannel(Names(2), TdmsDataType.Float) 'torque
Dim ch3 As TdmsChannel = New TdmsChannel(Names(3), TdmsDataType.Float) 'actuator position (LVDT)
Dim ch4 As TdmsChannel = New TdmsChannel(Names(4), TdmsDataType.Float) 'actuator position (LINEAR POT)
Dim ch5 As TdmsChannel = New TdmsChannel(Names(5), TdmsDataType.Float) 'actuator state (pneu)
Dim ch6 As TdmsChannel = New TdmsChannel(Names(6), TdmsDataType.Float) 'actuator state (elec)
Dim ch7 As TdmsChannel = New TdmsChannel(Names(7), TdmsDataType.Float) 'actuator state (hydr)
Dim ch8 As TdmsChannel = New TdmsChannel(Names(8), TdmsDataType.Float) 'upper oil tank temp
Dim ch9 As TdmsChannel = New TdmsChannel(Names(9), TdmsDataType.Float) 'lower oil tank temp
Dim ch10 As TdmsChannel = New TdmsChannel(Names(10), TdmsDataType.Float) 'Exit oil tank temp
Dim ch11 As TdmsChannel = New TdmsChannel(Names(11), TdmsDataType.Float) 'Inlet oil temp
Dim ch12 As TdmsChannel = New TdmsChannel(Names(12), TdmsDataType.Float) 'Part temp
Dim ch13 As TdmsChannel = New TdmsChannel(Names(13), TdmsDataType.String) 'Time stamp
Dim Channels As TdmsChannelCollection
Dim chans As TdmsChannel() = New TdmsChannel(13) {ch0, ch1, ch2, ch3, ch4, ch5, ch6, ch7, ch8, ch9, ch10, ch11, ch12, ch13}
Channels = channelGroup.GetChannels()
ch0.UnitString = "RPM" : ch0.Description = "Rotational speed of the spindle shaft."
ch1.UnitString = "CCM" : ch1.Description = "Oil flow from the specimen pump."
ch2.UnitString = "Nm" : ch2.Description = "Torque from the torque cell."
ch3.UnitString = "mm" : ch3.Description = "Linear displacement of the linear velocity displacement transducer."
ch4.UnitString = "mm" : ch4.Description = "Linear displacement of the linear potentiometer."
ch5.UnitString = "BIT" : ch5.Description = "Binary state of the pneumatic actuator (0=OFF, 1=ON)."
ch6.UnitString = "BIT" : ch6.Description = "Binary state of the electric actuator (0=OFF, 1=ON)."
ch7.UnitString = "BIT" : ch7.Description = "Binary state of the hydraulic actuator (0=OFF, 1=ON)."
ch8.UnitString = "°F" : ch8.Description = "Upper tubular tank oil temperature."
ch9.UnitString = "°F" : ch9.Description = "Lower (main) tank oil temperature."
ch10.UnitString = "°F" : ch10.Description = "Thermocouple (Location: Remote rack, EL3318, Ch.2)."
ch11.UnitString = "°F" : ch11.Description = "Thermocouple (Location: Remote rack, EL3318, Ch.3)."
ch12.UnitString = "°F" : ch12.Description = "Thermocouple (Location: Remote rack, EL3318, Ch.1)"
ch13.UnitString = "nS" : ch13.Description = "Time when the data was captured."
'The only TDMS channels that get added to the collection are the ones that the user selects on the 'Configure Data File' form.
'That is what this If-Then block is for.
If Channels.Count = 0 Then
jArray.Clear()
plcArrayNames.Clear()
For Each [boolean] In bools
If [boolean] = True Then
Channels.Add(chans(i))
Channels = channelGroup.GetChannels 'new
jArray.Add(jaggedarray(i))
plcArrayNames.Add(dataArrayNames(i))
End If
i += 1
Next
End If
'At this point, we are ready to write data to the TDMS file.
'Establish the line of communication to the PLC so we can read the data arrays.
Dim tcClient As New TwinCAT.Ads.TcAdsClient()
Dim dataStreamRead As TwinCAT.Ads.AdsStream = New AdsStream
Dim binaryReader As System.IO.BinaryReader = New BinaryReader(dataStreamRead)
If Connectlocal = True Then
tcClient.Connect(851) 'local
Else : tcClient.Connect(AMSNetID, 851)
End If
While cbRecord.Checked = True
b = tcClient2.ReadAny(DRHvar, GetType(Boolean)) 'read the handshaking variable from the PLC
If b = False Then
'This For loop reads the appropriate arrays in the PLC and then writes that data to the appropriate arrays here.
'The arrays in here will eventually get written to the TDMS file.
i = 0
n = 0
writingData = True
For Each [string] In dataArrayNames
If dataArrayNames(n) = plcArrayNames(i) Then
hvar = tcClient.CreateVariableHandle("IO_HS.Data." & dataArrayNames(n))
value = 0
returnValue = jArray(i).GetType
If returnValue.Name = "Single[]" Then
dataStreamRead.SetLength(jArray(0).Length * 4)
dataStreamRead.Position = 0
tcClient.Read(hvar, dataStreamRead)
For Each [element] In jArray(0)
jArray(i)(value) = binaryReader.ReadSingle()
value += 1
Next
ElseIf returnValue.Name = "Int64[]" Then
dataStreamRead.SetLength(jArray(0).Length * 8)
dataStreamRead.Position = 0
tcClient.Read(hvar, dataStreamRead)
For Each [element] In jArray(0)
jArray(i)(value) = binaryReader.ReadInt64()
value += 1
Next
ElseIf returnValue.Name = "String[]" Then
dataStreamRead.SetLength(jArray(0).Length * 32)
dataStreamRead.Position = 0
tcClient.Read(hvar, dataStreamRead)
For Each [element] In jArray(0)
stringVar = binaryReader.ReadChars(32)
lastValidNumber = Math.Max(Math.Max(Math.Max(Math.Max(Math.Max(Math.Max(Math.Max(Math.Max(Math.Max(stringVar.LastIndexOf("0"), stringVar.LastIndexOf("1")), stringVar.LastIndexOf("2")), stringVar.LastIndexOf("3")), stringVar.LastIndexOf("4")), stringVar.LastIndexOf("5")), stringVar.LastIndexOf("6")), stringVar.LastIndexOf("7")), stringVar.LastIndexOf("8")), stringVar.LastIndexOf("9"))
If lastValidNumber > 0 Then
jArray(i)(value) = stringVar.Substring(0, lastValidNumber + 1)
Else
jArray(i)(value) = "Invalid Timestamp"
End If
value += 1
Next
End If
tcClient.DeleteVariableHandle(hvar)
i += 1
If i = plcArrayNames.Count Then
Exit For
End If
End If
n += 1
Next
'This For loop appends/writes the data from each array to the actual TDMS file.
i = 0
For Each [array] In jArray
dtype = Channels(i).GetDataType
If dtype.Name = "Int32" Then
Channels(i).AppendData(Of Integer)(jArray(i))
ElseIf dtype.Name = "Single" Then
Channels(i).AppendData(Of Single)(jArray(i))
ElseIf dtype.Name = "Boolean" Then
Channels(i).AppendData(Of Boolean)(jArray(i))
ElseIf dtype.Name = "String" Then
Channels(i).AppendData(Of String)(jArray(i))
End If
i += 1
Next
Try
'Call the DataAnalyzer dll to write stats of the cycle to stats CSV file. Also plot the data of the cycle on the chart on the UI
Invoke(Sub() DataAnalyzer.Analyze(arrSpeed, arrTorque, arrLinPot))
Invoke(Sub() plotData())
Invoke(Sub() DataAnalyzer.WriteData(statsFile, logFile.Path, arrTimeStamp(0), plcData.cyclesCompleted))
Catch ex As Exception
testBool = True
End Try
'Populate the datagridview cells with the data values
dgvStats.Item(1, 0).Value = DataAnalyzer.peakTorque
dgvStats.Item(1, 1).Value = DataAnalyzer.engagementSpeed
dgvStats.Item(1, 2).Value = DataAnalyzer.slidePlateSpeed
dgvStats.Item(1, 3).Value = plcData.bimbaTravSpeed
dgvStats.Item(1, 4).Value = plcData.lastCycleTime
dgvStats.Item(1, 5).Value = plcData.currentCycleTime
dgvStats.Item(1, 6).Value = plcData.meanCycleTime
dgvStats.Item(1, 7).Value = plcData.cyclesPerHr
'NEW CODE to Evalute the elements in the arrTorque array to get the Max value recorded
maxValue = 0
For Each [element] In arrTorque
maxValue = Math.Max(maxValue, element)
Next
If maxValue <= plcData.torqueAlrmSP And plcData.cycleStarted Then
torqueLowCount += 1
Else : torqueLowCount = 0
End If
'Let the PLC know that we received the data and are now ready for the next set (handshaking variable).
tcClient2.WriteAny(DRHvar, True)
End If
'If the data count in the first column of the TDMS file exceeds the number here, then
'close the file and create a new one, then continue to append/write data
If Channels(0).DataCount >= 1020000 Then
For Each channel As TdmsChannel In chans
channel.Dispose() : channel = Nothing
Next
chans = Nothing
channelGroup.Dispose() : channelGroup = Nothing
If tcClient.IsConnected Then
dataStreamRead.Dispose() : dataStreamRead = Nothing
tcClient.Disconnect() : tcClient.Dispose() : tcClient = Nothing
End If
'Jump to the CreateNewFile Sub to create the next TDMS file
CreateNewFile()
End If
End While
If logFile.IsOpen = True Then
logFile.Close()
End If
If tcClient.IsConnected Then
dataStreamRead.Dispose() : dataStreamRead = Nothing
tcClient.Disconnect() : tcClient.Dispose() : tcClient = Nothing
End If
writingData = False
End Sub
Private Sub CreateNewFile()
'Create the new folder where the data file/s will reside
Dim newFilename As String = dataFileName & "_" & fileNum
Dim customFilePropertyNames() As String = {"Date"}
Dim customFilePropertyVals() As String = {""}
Dim newAuthor As String = logFile.Author
Dim newDescription As String = logFile.Description
Dim newTitle As String = logFile.Title
Dim newPath1 As String = "C:\Users\dmckin01\Desktop\Data\" & folderName
Dim newPath2 As String = "D:\Data\" & folderName
fileNum += 1
'Create the TDMS file and save it to the user specified directory
customFilePropertyVals(0) = Date.Today.ToShortDateString()
logFile.Close() 'Close the old logfile after we've gotten values/properties from it
logFile.Dispose() : logFile = Nothing
Try
If Connectlocal = True Then
logFile = New TdmsFile(newPath1 & "\" & newFilename & ".tdms", New TdmsFileOptions())
Else : logFile = New TdmsFile(newPath2 & "\" & newFilename & ".tdms", New TdmsFileOptions())
End If
Catch ex As Exception
MessageBox.Show("Directory not created. Make sure the TDMS file and/or directory that you are referencing are not already currently opened.", "Directory Creation Failed", MessageBoxButtons.OK, MessageBoxIcon.Error)
Exit Sub
End Try
logFile.Author = newAuthor
logFile.Description = newDescription
logFile.Title = newTitle
logFile.AddProperty(customFilePropertyNames(0), TdmsPropertyDataType.String, customFilePropertyVals(0))
logFile.AutoSave = True
dataAcquiring()
End Sub
堆栈错误总是由代码中的循环自行回调引起的。通常由 属性 设置处理程序引起，这些处理程序设置其他属性，而这些属性又会尝试设置初始 属性。有时很难确定它们。
在你的例子中，你调用了日志函数
dataAcquiring()
End Sub
然后文件创建例程结束...这是一个严重的错误。
每次启动一个新文件时，您都会启动一个新的日志循环实例，而旧的则保留在堆栈中...用完空间只是时间问题
在这种情况下...创建例程应该退出...
但是，如果是我，我会将该代码设为 return 为真或为假的函数。如果由于某种原因无法创建文件并在主循环中优雅地处理它，请 return false。