An array for multiple LHS assignment cannot contain expressions

2018 5 30
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更新时间：2018 5 31
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so I am trying to using matlab to control keithley sourcemeter, and I am trying to do a voltage sweep. The function given by the instrument is

[READING]=invoke(OBJ,'performsweepvi',RANGING,SPACING,DIRECTION,SOURCECOMPLIANCE,SOURCEPROTECTION,START,STOP,NUMBEROFPOINTS,SENSERANGE,SPEED,READING)

I put in the necessary value on the right hand side and when I execute it, it responds that An array for multiple LHS assignment cannot contain expressions. So I am not sure what to do. I have removed the bracket and another error shows up where it needs a logical or numerical value.

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Walter Roberson
Walter Roberson 2018-5-30
The closest I can see to that function name, performsweepvi, has to do with keithley functions for communicating with Labview VI ?
Jenny
Jenny 2018-5-30
when I select on the Ke24xx driver. and I select functions, that's the function present to sweep voltage. It's the driver used so Matlab can communicate with the instrument. I've used it to measure the voltage versus time. It's just that now I am trying to do a voltage sweep and for some odd reason, it's not working. Are you suggesting that I should go about another way to sweep the voltage?
Walter Roberson
Walter Roberson 2018-5-30
What is the model number of the device you are using?
Walter Roberson
Walter Roberson 2018-5-31
The Instrument Control Toolbox does not support the Keithley 2400 models.
Jenny
Jenny 2018-5-31
That doesn't make sense because I have been collecting data using matlab for a couple of years. The kusb driver that I use was converted to a plugandplay driver so that matlab could control the instrument.
Jenny
Jenny 2018-5-31
I used makemid function to convert it to ivi driver into a driver that matlab can use to communicate with the keithley.

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Jenny
Jenny
2018-5-30

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2018-5-31

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