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Guest xiangli

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I develop a program with VB for ControlLogix5000,the communication between PC and PLC has been realized through RSLinx. Now,I want to Realize "Force ON" or "Force OFF" in the vb programe(like ControlLogix5000), But how can i do it?

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I got this off the knowledgebase from AB support it shows some examples of using VB. Make sure you check out the label and text box properties. Hope this helps. A6935 - DDE with Visual Basic Example

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Thanks for your SourceCode,But I don't know how to "Force On" or Force Off" the DI point in VB with OPC.

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