It won’t be possible for me to use a TagProvider as I need to add a lot of devices with their own parameters (IP address, …). The OPC-UA driver correspond exactly to what I want to do. The equipement is a PLC but with no external protocol, this is why I use the embedded web server to catch the data.
I successfully tried the timestamping with the DataVariableNode, but I still have a problem…
If I change the value of the Node, I get it in the Tag in the Ignition Designer with the good timestamp on the LastChange Property. If I only change the timestamp (as the data value didn’t change in my web page), the tag is not refreshed in the Ignition designer.
If I use history, it archives the data only if the value changes (I use the Value timestamping for history of course).
When I use a transaction group, as the tag is calculated directly by the group, I always have the good value and timestamp.
Is there’s a way to use the History Provider the same way ?
Thanks again for your help 