GPIB-232CT-A Unrecognized command succeeds Error 17 ECMD

[N0pes]

I have been communicating to a GPIB-232CT-A using read/write C functions. The lack of a serial driver for 2.6 Linux kernels is a big pain.

I am able to read and write data seemingly successfully. but a 'stat n' returns Error 17 <ECMD> after every read, but not write. The read format is fairly simple, and succeeds. The documentation on ECMD error indicates I made a typo.

Can anyone give me insight into what could be happening?

here is an example 

wrt #8 13\n*IDN?\r

rd #80 13\r

<reads the IDN data successfully>

stat n

ERR,END,CMPL,REM,CIC,LACS

ECMD

NSER

33

Thanks,

N0pes 

[Scott-M]

Hi Nopes,

I had a look through the 488.2 help and I am having trouble figuring out what your "stat n" command is supposed to do, where did you find this command?

Thanks

Scott McCaig

[N0pes]

Thank you for taking the time to help.

Here is a link to the user manual. stat n is located on page 88.

-N0pes

[JasonSmith]

---

N0pes wrote:

here is an example 

wrt #8 13\n*IDN?\r

---

 

 I do see an error in your write syntax, it could be that the error is not detected until it starts processing the read. In the above wrt command, you specify a length of 8, but your string is only 5 characters long. The count is optional on the wrt command, so I would just omit it unless your string needs to include a carriage return as part of the data.

 

If you do need the carriage return as part of the data, then the command should be:

wrt #6 13\n*IDN?\r\r 

 

I hope that solve the problem,

 

Jason S.