EthernetIPforPLC5Com1 - Read Failed - 240. Error code in EXT STS Byte

[esturtz]

Added a button and the EthernetIPforPLC5Com1 to the default MainForm AdvancedHMI project in VS2017. set the ip address for the EthernetIPforPLC5Com1 (PLC 5 80E) object to the correct value.

Added to the button click event

    Private Sub MainMenuButton1_Click(sender As Object, e As EventArgs) Handles MainMenuButton1.Click
        MsgBox(EthernetIPforPLC5Com1.Read("N16:255"))
    End Sub


Below is the stack trace when run in debug mode


MfgControl.AdvancedHMI.Drivers.Common.PLCDriverException occurred
  HResult=0x80131500
  Message=Read Failed - 240. Error code in EXT STS Byte
  Source=MfgControl.AdvancedHMI.Drivers
  StackTrace:
   at MfgControl.AdvancedHMI.Drivers.AllenBradley.PCCC.PCCCforHMI.Read(String startAddress, Int32 numberOfElements)
   at MfgControl.AdvancedHMI.Drivers.AllenBradley.PCCC.PCCCforHMI.Read(String startAddress)
   at MfgControl.AdvancedHMI.MainForm.MainMenuButton1_Click(Object sender, EventArgs e) in C:\Projects\Mondelez\AdvancedHMIv399x\AdvancedHMI\MainForm.vb:line 32
   at System.Windows.Forms.Control.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnClick(EventArgs e)
   at MfgControl.AdvancedHMI.MainMenuButton.OnClick(EventArgs e) in C:\Projects\Mondelez\AdvancedHMIv399x\AdvancedHMI\FormChangeControls\MainMenuDriven\MainMenuButton.vb:line 208
   at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ButtonBase.WndProc(Message& m)
   at System.Windows.Forms.Button.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
   at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
   at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
   at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun()
   at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel()
   at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[] commandLine)
   at MfgControl.AdvancedHMI.My.MyApplication.Main(String[] Args) in :line 81


the value in the PLC is 230. The weird thing is if I  change the address to

   MsgBox(EthernetIPforPLC5Com1.Read("N16:254"))
or
   MsgBox(EthernetIPforPLC5Com1.Read("N16:256"))

it works without issue... Any ideas?

[Archie]

This could very well be a bug in the driver because it was fairly recent when the ability to go above 255 was added. I would try to read multiple elements to see if it can span over the value:

Dim v() as string=EthernetIPforPLC5Com1.Read("N16:254",3)

[esturtz]

Yes, it allowed me to span across the value as you suggested.

[Archie]

Try the latest Beta version to see if it works correctly:

https://www.advancedhmi.com/forum/index.php?topic=2058.msg11756#msg11756

[esturtz]

I downloaded the Beta and it has the same issue.

Thanks

[Archie]

Can you run a Wireshark and post the results?

I double checked the manual and it looks like the Beta 9 version should work , but I do not currently have access to a PLC5 to test.

[Archie]

These PLC5s are getting tricky to support. I had to dig one out of the storage closet and it had a dead battery so it lost all of its memory. Anyway, there is a new beta version 10 which fixes the problem:

https://www.advancedhmi.com/forum/index.php?topic=2058.msg11770#msg11770