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Utilisation carte PXI 6221 ouverture session + communiquer avec elle

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Bonjour,

 

Je suis en train de travailler sur un projet qui nécessite l'utilisation d'une carte PXI. J'ai vu qu'il fallait utiliser pour cela NI VISA et que le protocole utilisé est celui de registre. 

Je recherche des exemples pour pouvoir comprendre le fonctionnement de ces blocs :

- registre de niveau bas

- registre de niveau haut 

J'ai suivi les différentes étapes que propose le lien suivant : 

Using NI-VISA to Communicate with a PXI/PCI Device - NI-VISA 15.0 Help - National Instruments

J'arrive à initialiser et fermer mais je n'arrive pas à communiquer. 

Est ce que vous pouvez m'aider à mieux comprendre les registres pour que je puisse faire fonctionner ce programme ?

 

Merci D'avance

Communication_VISA.PNG

 

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Please use only DAQmx drivers for PXI 6221 and not the VISA drivers.

 

VISA driver for PXI device is advanced for users who create custom PXI instruments and not a general user who has an NI instrument.

Santhosh
Soliton Technologies

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Thanks you Santo_13 for your answer,

 

But I have to do a Testbench during my internship and my manager wants that we open a session visa. We use different PXI card and we put there on PXI frame.

I have another question about the PXI 6221, except the NI Daq driver, are there other drivers to install to use this? 

 

 

Kind regards 

 

NoDer_

 

 

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Solution
Accepted by NoDer_

As per the user manual, only DAQmx is supported.

 

santo_13_0-1643212577324.png

 

Typically, you use VISA for USB/LXI/GPIB/RS232 communications and almost never for NI instrumentation. All NI instruments come with their specific driver software.

 

Santhosh
Soliton Technologies

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Hello Santo_13,

 

Thansk for your answer. It is easier now. 

 

kind regards 

 

NoDer_

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