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I want to write a VBScript code which allow reading & writing Information from/to an AB PLC5 via a Wonderware DAS Server(DASABTCP). The DASABTCP can talk in 3 Protocols: NetDDE, SuiteLink and OPC.

Is there an object I can create or get within VBScript in order to accomplish my goal?

Hi - there is an OPC client component tool called OPC Data.NET

http://www.opcwebclient.com/html/opcdata_net.html

that can do what you want - sample script to use VBScript (i.e. Windows Shell Scripting) to connect to an OPC server at:

http://www.opcwebclient.com/html/source_code.html

A free trial is available at:

http://www.opcwebclient.com/html/free_demo.html

John

Thanks for your reply. I'll have a look on your suggestions.

You can write your own OPC client from scratch in VB. I have done this, but for the cost of commercial software to create client you may not find it worth it. If you need more info, email me.

Gary