Since the version 2.1.1 Advanced Modem Data Logger has an internal OPC server. It means, that any OPC compatible client application can get data from Advanced Modem Data Logger without any additional software. For connecting to the OPC server our OPC server has an unique attributes (pic.1). Before using the OPC server on your PC you should download and install the OPC Core Components Redistributable from www.opcfoundation.org (registration required).

Pic.12 OPC server parameters

Advanced Modem Data Logger are parsing all incoming data to one or more variables and OPC client are getting it (pic.2). After connecting to the OPC server you will get list of all variables.

Pic.13 OPC server active items

Clients activity is showed on the "Active clients" tab. The top node is client, below is group of items and connected items. By double-clicking, you can get a detailed information about each node.

Pic.14. OPC server clients

Advanced Modem Data Logger creates new variables at "on-the-fly" mode. The Advanced Modem Data Logger starts without any variables and get it only after first data had been received. If your client OPC will connect to the OPC server before, than data had been received, then it will get empty list of variables and your OPC client should poll the OPC server for updating list of variables. If your OPC client doesn't allow it, then your can predeclare all variables (pic.15). In this case the OPC server will create these variables with empty values, immediate after starting and your OPC client will get these names while connecting.

Pic.15. OPC server predeclaration

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