Maurice,
Think I have sent you all this before, but here it is again.
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Block diagram of test setup to get thermostats working with T3-BB.
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Control program for boilers, hot water, etc.
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Test program for thermostats.
Chelsea has screen shots of the variables and network points screens for my system. It is only picking up the IP address instance of AI5, which would be INS33AI5, not the INS38AI5 that I want to read.
Mike