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Vb.net Question

How do I write VB.NET program to remotely control 6060B (electric load)

I am writing a vb.net program to remotely control the 6060B (electric load). So far I have successfully connected my pc to the 6060B and I am able to query information from the load. Below is the part of the code I wrote:

Dim mbSession As MessageBasedSession;
mbSession = ResourceManager.GetLocalManager().Open("GPIB::6::INSTR");
Dim responseString As String = mbSession.Query("*idn?");


This returns me the information of the load -- "responseString is HEWLETT-PACKARD...". However, I don't know what should I do to change/set the current, voltage ect just as I normally do from the panel. I search on the internet and I found that I could use HPSL programming language but what should I remotely control the 6060B using vb.net? I am using NI-VISA.NET API.

Answer

You need to find the command reference. There is a standard, SCPI, which has commands generally in the form

MEASure:CURRent?

Again this is a standard, and you should find the specific command reference for your device, HP (Keysight / Agilent) 6060B 300 Watt DC Electronic Load.

A search engine result for hp 6060b manual should yield some good results. Look for an operating or programming manual which usually has the command reference.

This should work for you:

' This example sets the current level to 0.75 amps
' and then reads back the actual current value.


' set input off
mbSession.Write("INPUT OFF")
' set mode to current
mbSession.Write("MODE:CURR")
' set current range
mbSession.Write("CURR:RANG 1")
' set current value
mbSession.Write("CURR 0.75")
' set input on
mbSession.Write("INPUT ON")
' measure current
Dim result As String
result = mbSession.Write("MEAS:CURR?")
Dim measuredCurrent As Single = Single.Parse(result)

Example taken from page 70 of this operating manual I found.

In general, things are usually easier if you are provided example code. I will usually use the example code to get a baseline working operation, then copy the code to my project and manipulate as needed.

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