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COM-ports not accessible under labview

Hi,

I´m using data-transfer between my PC and a self made control system via com-ports. After installation of labview 7 on another notebook (Compaq nc8430 with Windows XP, SP2) communication doesn´t work. Labview sees none of the installed interfaces. Even the standard RS232-example doesn´t work. If I try to run it, the system announces an unknown error. The standard a system applications work properly with the interfaces. A test with labview 8.6 made no difference. Another (different) notebook had the same problem. So I suppose a problem depending on the standard safety-settings of our company.

Thanks for your help in advance.

Karl

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When you installed LabVIEW, did you also install the NI-VISA drivers?
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