VISA LabVIEW

[Steve Hopkins]

Am I right in assuming that HT BASIC has no direct connection with VISA? Therefore to communicate with some NI cards then I would need to create a LabView DLL in the ‘C’ format and call it from HT BASIC via its DLL interface?

[RalphW]

The current version of HTBasic now includes a VISA driver: LOAD BIN “VISA;…” (or use Device Setup to configure). There is also an LXI driver that is VISA compliant. You can try out these device drivers by downloading the Trial version of HTBasic.

[Jindong Song]

Would you please give me a short example to use instrument through visa in HTBasic?

I connected HP mulitimeter and it was found as ASRL3::INSTR “COM3” in NImax.

It was connected through USB-serial [CH340 based] and well tested with VISA TEST Pannel in NImax.

It asked with *IDN? command.

And I do not know how to use it in HTbasic. I am new guy with HTBasic.

[PatB]

Here is a simple program that simply loads the VISA driver for the instrument at ASRL3::INSTR. It outputs *IDN to the instrument and then enters the response and stores it in a string variable. Finally it prints out the returned value in the string variable.

 LOAD BIN "VISA;DEV ASRL3::INSTR ISC 7"

      OUTPUT 7;"*IDN?";
      ENTER 7;S$
      PRINT "The connected device is: ",S$
      
      END

An alternative to loading the driver in code is to use the Device Setup under the tools menu.

[Jindong Song]

Thank you PatB.

BR
JDS

[Author]

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