RapidData "hidden GeneralException" on FP SDK 5.14

ECapitanio

Hi,
I have found a "hidden ABB.Robotics.GeneralException" by console connection to controller when I try to get a RapidData that is not present in a specific system module. I need to know if this RapidData is present to do some things or if not present to do other...

If RapidData is present there aren't "hidden exception" and "[Fp]: ...." message from console.

now a piece of my code:

...
Task[] tasks = controller.Rapid.GetTasks();
try
{
      Trace.WriteLine(string.Format("DataController() -> getting RapidData _EFdo"));

      RapidData _EFdo =  tasks[0].GetRapidData("SM_CONF", "EFDoButtons");
//"SM_CONF" is my system module and always is present, "EFDoButtons" if present is a CONS string

       if(_EFdo != null)
       {
                // do some things...
       }
       else
       {
              // do other things...
       }
}
catch(ArgumentNullException ex)        //as wrote on FP SDK about working with RapidData in "Using the FlexPendant SDK - Using the Controller API - Rapid domain"
{
          Trace.Fail(string.Format("DataController() Error: -> RapidData EFDoButtons is not present in SM_CONF " + ex.Message));
}

I tryed also with "ABB.Robotics.GeneralException" instead of "ArgumentNullException" in catch statement but on HyperTeminal always I can read this message from FP:

[fpsdk]: DataController() -> getting RapidData _EFdo
[fp]: -------------------------------------------
We have a hidden exception:
ExceptionType: ABB.Robotics.GeneralException
Caught at GetRapidData2 in ABB.Robotics.Controllers/Rapid.cs
Message: SYS_CTRL_E_NO_SUCH_SYMBOL: RAPID symbol was not found.

Error Code: (0xc0049000)


SYS_CTRL_E_NO_SUCH_SYMBOL: RAPID symbol was not found.
ERROR: rapid.c[1954]: org_code: -1162 new_code: 0xc0049000; RobSymbolSearchImpl.
cpp[160]; AdaptRapidCommon.h[1929]; AdaptRapid.cpp[996];  ABB.Robotics.GeneralEx
ception at GetRobSymbolDynamic in Dcl.rapid/AdaptRapid.cs
   at ABB.Robotics.Dcl.ExceptionHelp.GenerateExceptionBasedOnHResult(String objS
tr, String method, ReturnCodeRobAPI hRes, String info)
   at ABB.Robotics.Dcl.ExceptionHelp.GenerateException(String objStr, String met
hod, ReturnCodeRobAPI hRes, ReturnCodeRobAPI[] expectedErrors, String lastErrorD
esc, String[] additionalinfo)
   at ABB.Robotics.Dcl.ExceptionHelp.GenerateException(String objStr, String met
hod, ReturnCodeRobAPI hRes, ReturnCodeRobAPI[] expectedErrors, String lastErrorD
esc)
   at ABB.Robotics.Dcl.Rapid.AdaptRapid.GetRobSymbolDynamic(Int32 rapidClient, S
tring symbolUrl, RobSymbolDynamic& symData)
   at ABB.Robotics.Dcl.Rapid.Rapid.GetRobSymbolDynamic(String Url)
   at ABB.Robotics.Controllers.RapidDomain.Rapid.GetRapidData2(Rapid dclRapid, S
tring blockUrl, String[] rapidData)
   at ABB.Robotics.Controllers.RapidDomain.Task.GetRapidData(String[] rapidData)

   at EasyFlex.DataController..ctor(EasyFlex _gui)
   at EasyFlex.EasyFlex.ABB.Robotics.Tps.Taf.ITpsViewSetup.Install(Object sender
, Object data)
   at ABB.Robotics.Tps.SDK.Base.SDKViewWrapper.Install(Object tafSite, Object in
itData)
   at ABB.Robotics.SDK.Views.EasyFlex.Install(Object tafSite, Object initData)
   at ABB.Robotics.WinCore.TPAppFwk.Runtime.TacController.SetupItem(Object& item
, Object initData)
   at ABB.Robotics.WinCore.TPAppFwk.Runtime.TafMaster.CreateItem(TacLaunchInfo&
launchInfo, TacContext& context, Boolean setAsActiveCtrl, Boolean sysItem)
   at ABB.Robotics.WinCore.TPAppFwk.Runtime.TafMaster.ABB.Robotics.WinCore.TPApp
Fwk.Runtime.ITafMaster.CreateItem(TacLaunchInfo& launchInfo, TacContainerContext
& containerContext)
   at ABB.Robotics.WinCore.TPAppFwk.SiteServices.ABB.Robotics.WinCore.TPAppFwk.B
ase.ITafSite.LaunchTPAppControl(TacLaunchInfo& launchInfo, TacContainerContext&
containerContext)
   at ABB.Robotics.Tps.Controls.TpsABBMenu.ListView_ItemActivated(Object sender,
 EventArgs e)
   at ABB.Robotics.Tps.Windows.Forms.ListView.OnItemActivate(EventArgs e)
   at ABB.Robotics.Tps.Windows.Forms.ListView.OnMouseUp(MouseEventArgs e)
   at System.Windows.Forms.Control.WnProc(WM wm, Int32 wParam, Int32 lParam)
   at System.Windows.Forms.ContainerControl.WnProc(WM wm, Int32 wParam, Int32 lP
aram)
   at System.Windows.Forms.Control._InternalWnProc(WM wm, Int32 wParam, Int32 lP
aram)
   at Microsoft.AGL.Forms.EVL.EnterMainLoop(IntPtr hwnMain)
   at System.Windows.Forms.Application.Run(Form fm)
   at ABB.Robotics.WinCore.TPAppFwk.MainFrame.Start()
   at ABB.Robotics.WinCore.TPAppFwk.TafApp.Start()
   at ABB.Robotics.WinCore.TPAppFwk.TafApp.Main(String[] args)

END (at 615684)
-------------------------------------------
[fpsdk]: DataController() -> ..........
[fpsdk]: DataController() -> ..........
[fpsdk]: DataController() -> ..........

- Is normal this message also if my get statement is in try/catch block?? where is wrong?
- This hidden exception ban create some problems for the proper execution of the application? (yes, I'm always verify if my variabile if "null" before using it).

Regards
Emanuele

John Wiberg

Sorry that I don't have the time to make a proper test+answer. So I can't answer why you get the error you do.

Now as a workaround you can check if the data is there using SearchRapidSymbol before using it. Since you know where its location, name and type it shouldn't even be a drain on any resources.

But why do you use the tasks instead of direct access? Is it a multimove system?

For the lurkers; direct access is like this:
RapidData rd = aController.Rapid.GetRapidData("T_ROB1", "USER", "reg1");

ECapitanio

Hi John,
tank you for you answer and suggestion. Don't worry if you haven't time to try it, mee too and with too many things to do..
About your questions:
The system is not a multi move, I probably made ?_<?_<a</span> misuse of  "tasks[..].GetRapidData(..)" method.
So I'll try to use first "SearchRapidSymbol" and after "...Rapid.GetRapidData(..)" to see the other any "new" messange by console connection with controller, and I'll get to you a right feedback about it.

Tank you very much
regards Emanuele

ECapitanio

Hello,
I have tried with  direct access "acontroller.Rapid.GetRapidData("T_ROB1", "MyModule", "MyVar");" but the problem it's same..