Up to now we have profitably used your library to implement numerous integrations between our management software and customers' machine tools.

We have never needed to activate the connection with user/password but now we find ourselves in the situation of needing it to be able to use the CALL function of a method that is inhibited for anonymous connection (in the below example you’ll find all the authenticated access modes we tested, even individually).

Let's start by saying that, on this same machine, we are already collecting data from an anonymous connection.
Below we attach the used code and runtime screenshots showing reported errors.

Can you give us some suggestions to unravel the problem?


PHP SOURCE CODE

---

<?php
$bDebug = true;
if ($bDebug)
error_reporting(E_ALL);

$EndpointDescriptor = new COM("OpcLabs.EasyOpc.UA.UAEndpointDescriptor");
$EndpointDescriptor->UrlString = "opc.tcp://192.168.10.20:51210/UA/E77Server";

//com_print_typeinfo($EndpointDescriptor->UserIdentity->AnonymousTokenInfo);
$EndpointDescriptor->UserInfo = "KM:km";

$EndpointDescriptor->UserName = "KM";
$EndpointDescriptor->Password = "km";

$EndpointDescriptor->UserIdentity->AnonymousTokenInfo->IsEnabled = false;
$EndpointDescriptor->UserIdentity->UserNameTokenInfo->UserName = "KM";
$EndpointDescriptor->UserIdentity->UserNameTokenInfo->Password = "km";
$Client = new COM("OpcLabs.EasyOpc.UA.EasyUAClient");

// This example shows how to call a single method, and pass arguments to and from it.
$inputs[0] = "a";
$inputs[1] = "b";
$inputs[2] = "c";
$inputs[3] = "d";
$inputs[4] = "e";
$inputs[5] = "f";
$inputs[6] = 2;
$inputs[7] = "";
$inputs[8] = "";
$inputs[9] = "";
$inputs[10] = true;
$inputs[11] = 3;
$inputs[12] = 0;
$inputs[13] = 0.0;

$typeCodes[0] = 18; // TypeCode.String
$typeCodes[1] = 18; // TypeCode.String
$typeCodes[2] = 18; // TypeCode.String
$typeCodes[3] = 18; // TypeCode.String
$typeCodes[4] = 18; // TypeCode.String
$typeCodes[5] = 18; // TypeCode.String
$typeCodes[6] = 10; // TypeCode.UInt32
$typeCodes[7] = 18; // TypeCode.String
$typeCodes[8] = 18; // TypeCode.String
$typeCodes[9] = 18; // TypeCode.String
$typeCodes[10] = 3; // TypeCode.Boolean
$typeCodes[11] = 12; // TypeCode.UInt64
$typeCodes[12] = 12; // TypeCode.UInt64
$typeCodes[13] = 14; // TypeCode.UInt64

// Perform the operation
try
{
$outputs = $Client->CallMethod(
$EndpointDescriptor->ToString(),
"nsu=http://www.euromap.org/euromap77/ ;ns=4;s=70250", // Node descriptor
"nsu=http://www.euromap.org/euromap77/ ;ns=4;s=70250", // Method Node Id
$inputs,
$typeCodes);
}

catch (com_exception $e)
{
printf("*** Failure: %s\n", $e->getMessage());
exit();
}

// Display results
for ($i = 0; $i < count($outputs); $i++)
{
printf("outputs[d]s\n", $i, $outputs[$i]);
}
unset($Client);
exit();
?>

Hello,

Of course.

Code to send User and Password, acceptint de certificate:

For each value I need to read:

The code to Read the items:

Thanks for you help!
Escarre

Hello,

Finally I can read the data. When the application initiates, this form appears:



Can I avoid this form?

Thanks a lot,
Escarre

Hello,

I have attatched the node I want to read.

Thanks,
Escarre

Hi,

I made another test, using OnDataChangeNotification.

When I receive the event, the eventArgs.Arguments.NodeDescriptor.DisplayString value NodeId="ns=3;s=_System.General.Temperature"
But eventArgs.AttributeData is nil.

Thanks again,
Escarre

Hi again,

When I want to display results an exception raises: EIntFCastError Interface not supported
But if I use this code (Result is a _ValueResult variable):
Result := IInterface(Results[intVariable]) as _ValueResult
there are no error, but the Result.value is unassigned.

This code in another OPC server works properly, so I don't know why is not working.

Thanks,
Escarre

Hello,

I need to set the user and password and read a list of OPC items.
What is the best way to get these data list?

Are there any example in Delphi?

Thanks,
Escarre