Recent content by ZbynekZ

If this is the cause, then there are 32-bit and 64-bit versions of Excel. So it is possible to uninstall the 64-bit bit Excel and install 32-bit Excel. But first, check in Task Manager what bitness the Excel process is. I am not aware of 64-bit wrapper DLL.

Isn't Excel running in 64-bit process? If so, it wouldn't be able to access the wrapper DLL which is 32-bit.

On which code line do you get the error?

You can use the Live Binding feature of QuickOPC: http://www.opclabs.com/products/quickopc/development-models/live-binding. The product does not OPC-enabled controls in itself, but allows to "animate" any existing control by binding its properties to OPC tags. Disclaimer: This is a...

The OPC Data Access specification does not deal with creating (or modifying, or removing) the items in OPC address space. If the OPC server allows this to be controlled programmatically, it would be through some channel separate from OPC DA, *or* (a kind of trick). it can theoretically be...

In order to facilitate such communication you typically use an OPC client that connects to both servers, and transfers the data between them. This can either be a COTS (commercial off-the-shelf) product dedicated to this purpose, or you can build one using an OPC client toolkit (disclaimer: I...

The new OPC-UA specs come with profiles (incl. a "micro" and "nano" profiles) that can fit the embedded devices. E.g. Flash of 240kB, and RAM of 35kB for the OPC server in a microcontroller. Zbynek Zahradnik, OPC Labs, www.opclabs.com