Actually, I think that it is more likely that the problem is elsewhere. But reasoning about behavior on an unsupported system is pointless.

Best regards

So if you really think that it is only a problem of compatibility I can install Windows Server 2012 is that OK ?

Thanks Roberto

This is indeed the latest QuickOPC version as of today.

On the other hand, Windows Server 2008 R2 is not supported by this version. See kb.opclabs.com/Versions or the documentation that goes with each QuickOPC version.

The problem you have may or may not be related to the fact that you are running on an unsupported version - I cannot tell.

Regarda

This is the version that I'm using on a windows Server 2008 R2

Note that I have asked for a version and build for a reason, not just as a routine. We indeed had a similar issue, and have fixed it recently I believe.

Best regards

Hello,

which version *and build* of QuickOPC are you using? If it is not the latest one from our Web site, please update to it first.

Regards

More info:

if I try this command

<?php

$opcServer = "opc.tcp://188.22.19.200:49320/";
$opcPath = 'nsu=KEPServerEX;ns=2;s=GHOST.RHB1';

$client = new \COM("OpcLabs.EasyOpc.UA.EasyUAClient");

try {
$nodeElements = $client->BrowseDataNodes($opcServer, $opcPath);
} catch (\Exception $e) {
die($e->getMessage());
}


this code fire error
Source: OpcLabs.BaseLib
Description: Attempt to add existing item into a set.

same in this way:

script give same error if you change parameters to

$opcServer = "opc.tcp://pop.bitween.com:49320";
$opcPath = 'nsu=KEPServerEX;ns=2;s=RHB1.RHB1';

but works fine from test server , so looks like it depends on windows server version ??
or some components outdated ?

We have tested the procedure on a KEPWARE Server test and all worked but when we move to the official Server and we try to get node with this command:

$nodeElements = $client->BrowseDataNodes($opcServer, $opcPath);

we get this issue and we have no idea why can somebody explain why ?

Source: OpcLabs.BaseLib
Description: Attempt to add existing item into a set.