AGG Software
Ask a question  Top  Previous  Next

OPC server

Since the version 2.1.1 Advanced TCP/IP Data Logger has an internal OPC server. It means, that any OPC compatible client application can get data from Advanced TCP/IP Data Logger without any additional software. For connecting to the OPC server our OPC server has an unique attributes (Fig. 5.2.1). Before using the OPC server on your PC you should download and install the OPC Core Components Redistributable from www.opcfoundation.org (registration required).

 

opc settings

Fig. 5.2.1 OPC server parameters

 

Advanced TCP/IP Data Logger are parsing all incoming data to one or more variables and OPC client are getting it (fig. 5.2.2). After connecting to the OPC server you will get list of all variables.

 

opc item names

Fig. 5.2.2 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.

 

opc client

Fig. 5.2.3 OPC server clients

 

Advanced TCP/IP Data Logger creates new variables at "on-the-fly" mode. The Advanced TCP/IP 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 processed, 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 pre-define all variables (fig.5.2.4). 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.

 

opc predeclaration

Fig. 5.2.4 OPC server pre-declaration




Copyright © 1999-2016, AGG Software.
All rights reserved.