Thank You.....it works!

For reference here is the correct string!

$Client2 = new COM("OpcLabs.EasyOpc.UA.EasyUAClient");

print $Client2->ReadValue("opc.tcp://192.168.223.57:4840","nsu=urn:CX-709B7F:BeckhoffAutomation:Ua:PLC1;ns=4;s=.stPlantPort.FromMWU.Realtime.ActualOrderCount");

Thanks again!

Hello.

Look here:

opclabs.doc-that.com/files/onlinedocs/OPCLabs-OpcStudio/Late...Read%20a%20single%20value.html

(COM part, switch to "PHP" tab)
Best regards

Thanks for the quick response. But it is still not working. I get.

Failed to create COM object `EasyUAClient'

I tried.....

$Client = new COM("EasyUAClient");
$Client = new COM("EasyOpc.DataAccess.EasyUAClient");
$Client = new COM("DataAccess.EasyUAClient");

all produce COM errors.

Thank You

Hello.

In your PHP code, you are trying to access the server using the EasyDAClient class, which is for OPC "Classic" servers (COM/DCOM based). However, as it can be seen from your working VBA example, and from the URL of the server (which uses "opc.tcp:"), your server us actually an OPC UA server.

So you need to change your PHP code to actually *really* match the VBA code. I.e. you need to use the EasyUAClient object, and the ReadValue method.

I hope this helps.
Best regards

Hi,
I am in the test phase of using the COM object in VBA and PHP. I have the VBA object working no problem. I have having issues with the PHP COM not working.

VBA WORKS WITH THIS.
Dim Client As New EasyUAClient
Debug.Print Client.ReadValue("opc.tcp://192.168.223.57:4840", "nsu=urn:CX-709B7F:BeckhoffAutomation:Ua:PLC1;ns=4;s=.stPlantPort.FromMWU.Realtime.TotalScrapSheets")



PHP CODE FAILS TO OUR SERVER BUT WORKS WITH YOUR DEMO SERVER.
<?php

$Client = new COM("OpcLabs.EasyOpc.DataAccess.EasyDAClient");

// THIS CALL TO YOUR DEMO SERVER WORKS
print $Client->ReadItemValue("", "OPCLabs.KitServer", "Demo.Single");


// THIS CALL TO OUR LOCAL SERVER FAILS. IT IS THE SAME SERVER THAT THE VBA WORKS ON.

print $Client->ReadItemValue("","opc.tcp://192.168.223.57:4840","nsu=urn:CX-709B7F:BeckhoffAutomation:Ua:PLC1;ns=4;s=.stPlantPort.FromMWU.Realtime.ActualOrderCount");

FAILS “No method available to convert ProgID to CLSID”

Any insight would be appreciated.

thank you