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DVC 6200 Ovation/Valvelink

Hello, I am having an issue with Ovation DCS that is utilizing hart communication utilizing AMS to DVC6200 through a multiplexer, and a laptop utilizing Valvelink software connected to the ethernet port on the multiplexer is not allowing the laptop to communicate when ovation is connected.  I believe this is due to the Hart signal coming from ovation and cannot communicate over the same line, or is the issue master/secondary master?


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