How do I change the DAC service serial port assignment in a distributed applications

I am in the process of writing an application for end of line testing of large commercial HVAC units. It is our intention that this will be a distributed application on several workstations.
I am successful setting up a modbus serial connection to the hardware we are using when in the development system but once the application is built and installed onto another PC, no data is passed from the NI variable Engine to the shared Variables in the VI. The comm port is identical and the port settings should get handled through the executable application I would assume.
Does anybody have any clues?
Stebo222

Hi, do you see the variables at the Distributed System Manager? If not, I believe you need to check this article. Something to keep in mind is the path for the library, it changes once it's built into an executable so make sure you are pointing to the right direction (a regular fix is striping the path, it may not work on the VI but it will on the .exe).
Alejandro | Academic Program Engineer | National Instruments

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Introduction
Per Books Online:
http://msdn.microsoft.com/en-us/library/ms189595.aspx
SQL Server listens for the DAC on TCP port 1434 if available or a TCP port dynamically assigned upon Database Engine startup.
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There are two instances are running on one server. I specified the same DAC port number 5555 for the two SQL Server instances by modifying the registry
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\MSSQL11.MSSQLSERVER\MSSQLServer\SuperSocketNetLib\AdminConnection\Tcp
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name
local_tcp_port
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Sqlcmd: Error: Microsoft SQL Server Native Client 11.0 : Client unable to establish connection.
Sqlcmd: Error: Microsoft SQL Server Native Client 11.0 : Client unable to establish connection due to prelogin failure.
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http://msdn.microsoft.com/en-us/library/ms189595.aspx
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Please click to vote if the post helps you. This can be beneficial to other community members reading the thread.

I tested your script after
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