VISA (Hex 0xBFFF00015) timeout expired

[Josh_Music]

I have been trying to automate my labs power supply (Createc 3504 power supply serial 598). I have isolated the power supply as a sort of experiment to make sure my labVIEW program works correctly where I connect the power supply to just a thermocouple and a resistor in series and both are connected to the createc power supply. 

In this experiment, I connect a USB -> RS232 converter into the RS232 port on the back of the power supply in order to get a reading of temperature using labview. 

I used VISA interactive control to determine if VISA was working properly. I get the error VISA (Hex 0xBFFF00015) timeout expired and I have followed the troubleshooting to the best of my ability. I did notice that my file pathing is incorrect; labview says my file path should start with

<instrlib>:\Eurotherm 35xx Series/Eurother....etc. but my current path is

C:\ProgramData\National Instruments\etc....

My question is does the incorrect path cause the timeout error? Where is <instrlib>? (I am unable to attach VI due to this path error) 

[billko]

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@Josh_Music wrote:

I have been trying to automate my labs power supply (Createc 3504 power supply serial 598). I have isolated the power supply as a sort of experiment to make sure my labVIEW program works correctly where I connect the power supply to just a thermocouple and a resistor in series and both are connected to the createc power supply. 

In this experiment, I connect a USB -> RS232 converter into the RS232 port on the back of the power supply in order to get a reading of temperature using labview. 

I used VISA interactive control to determine if VISA was working properly. I get the error VISA (Hex 0xBFFF00015) timeout expired and I have followed the troubleshooting to the best of my ability. I did notice that my file pathing is incorrect; labview says my file path should start with

<instrlib>:\Eurotherm 35xx Series/Eurother....etc. but my current path is

C:\ProgramData\National Instruments\etc....

My question is does the incorrect path cause the timeout error? Where is <instrlib>? (I am unable to attach VI due to this path error) 

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Do you know if your instrument even responds to this command?  Do you know if the serial port parameters are correct?  (e.g., baud, parity, etc.)

[Josh_Music]

I got this program directly from the list of drivers listed on the PIDs website, so I am quite confident that the program is compatible with my power supply. 

I am less confident with the parameters, but when I test them in the "VISA interactive control" package, the only problem I can find is the timeout expired error. Is there another way to test this program? Should I simply triple check the given manual for the power supply? 

[billko · Accepted solution]

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@Josh_Music wrote:

I got this program directly from the list of drivers listed on the PIDs website, so I am quite confident that the program is compatible with my power supply. 

I am less confident with the parameters, but when I test them in the "VISA interactive control" package, the only problem I can find is the timeout expired error. Is there another way to test this program? Should I simply triple check the given manual for the power supply? 

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I'm sorry, my last post I was a bit vague about what I was referring to.  I was referring to your interactive VISA communication attempt.  Only instruments capable of responding to a SCPI "*IDN?" query will respond to that command.  Do you know if your instrument is SCPI-capable?  I know that's a very basic question, but since I have no background on how much you know about instrument communication, I figured I should start at the very beginning just in case.

[Josh_Music]

My apologies I accidentally accepted your comment as a solution. 

This machine uses MODBUS RTU protocol, so I believe it is not capable of responding to SCPI. Thank you for not assuming, as I am new to electronics and programing.