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Member
jose_123
Posts: 8
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Simple 872B VXI read write

Hi all,

I am working with the 872B vxi controller.  I tried using the register write and read but don't get any results.  I don't get errors.  I would like to write to a specific location and read the same location.  I should read what I wrote at the location.  However, all I read is a zero.  Anyone have any insight on what maybe happening?

 

other info

OS: Windows XP

LabVIEW: 7.1

 

thanks,

Jose

Member
Jake_H
Posts: 98
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Re: Simple 872B VXI read write

Hello Jose,

 

I'd like to get some more information on your application.

 

  • What modules or devices are you trying to send and receive commands from?
  • How are you sending the commands (VISA, RLP, etc.)?
  • What commands are you sending?

Any other information on your configuration could help diagnose what's going on with your VXI system. Thanks.

Jake H | Applications Engineer | National Instruments
Member
jose_123
Posts: 8
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Re: Simple 872B VXI read write

[ Edited ]

Jake,

I am sending the commands (VISA) via High level registers.  The modue I am tring to write to is the slot 0 controller.

I am sending commands via "VISA Move out 16" to write and "VISA In 16" to read.

Hope that helps.

 

Jose

Member
Jake_H
Posts: 98
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Re: Simple 872B VXI read write

If you're programming in C, you can try this example to see if your results improve. If you are using LabVIEW, I would recommend trying this one. Otherwise, what software interface are you using to send/receive VISA commands (LabVIEW, Measurement & Automation Explorer, etc.) and can you post screenshots of your software configuration?

Jake H | Applications Engineer | National Instruments