Hi, I'm using Codesys v. 3.5 SP7 with Berghof IEC 2250, and I've got one question.
I've read somewhere that webserver can support up to 100 clients. I want to test it. I've prepared a visualisation already.
My question: is there any counter or method to count number of clients currently connected to webvisu via browser?

Hi,

try it that way:

You Need to call this in visutask context 'VISU_TASK'

PROGRAM CountClients
VAR
       pClient: POINTER TO VisuElems.VisuElemBase.VisuStructClientData;
       countWebvisu: INT;
       countAll: INT;
END_VAR

__Implementation______

```

countWebvisu := 0;
countAll := 0;
g_ClientManager.BeginIteration();

WHILE (pClient := VisuElems.VisuElemBase.g_ClientManager.GetNextClient()) <> 0 DO
       IF pClient^.GlobalData.ClientType = VisuElems.VisuElemBase.Visu_ClientType.WebVisualization THEN
             countWebvisu := countWebvisu + 1;
       END_IF

       countAll := countAll + 1;
END_WHILE

```BR
Edwin

Thank u a lot for your answear but I'm a newbie so I need some more explanation

As I understood this part:

Zitat:
PROGRAM CountClients
VAR
pClient: POINTER TO VisuElems.VisuElemBase.VisuStructClientData;
countWebvisu: INT;
countAll: INT;
END_VAR

Stood for a structure (DUT) named CountClients.

The second part stands for POU named g_ClientManager.

But if i want to add CountClients to VISU_TASK as a call the program goes into the exception.
And if i would like to add a g_ClientManager as a call in VISU_TASK i can't because its type is TYPE.

What have i done wrong?

I tried with VISU_NO_EXCEPTION_HANDLING but it failed, with 42 errors like Problem during creating a client: we are out of memory.