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Some questions on SmartDDE and Windows XP

I have three Brooks Emerson mass flow controllers, but I can't control them
using some Excel macros and the SmartDDE because Windows XP doesn't
recognize the controllers by the COM port.
How can I solve this problem?
I also need the help file that comes with SmartDDE (when I installed the
program no help file was created). Where can I find it?
Where can I find the document regarding the HART protocol-based commands,
Brooks part no. 541-C-053-AAA?
Thanks in advance.

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Message 1 of 2
Hi SmartDDE,
I am unfamiliar with the instruments you are attempting to communicate with, but I found a good post about it here:
Hope this helps!
Charlie S.

Visit for step-by-step help in setting up your system
Message 2 of 2