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Problem with Initialize of Keithley 6430. (RS232 connection)

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Dear community,


I would like to ask some help.

I am try to connect the Keithely 6430 thought RS232 port. 

My first step was check connection. I use for that Putty. The command *IDN? return KEITHLEY INSTRUMENTS INC.,MODEL 6430,0924216,C24 Feb 14 2002 11:59:45/A02 /D/

I installed drivers for Keithely 6430 from NI catalog. According the description it is for GPIB connection. So I have started to modify them for RS232 connection. First problem is VISA Read error -1073807339.

I got it in the Initialize block. 

I opened block schem, check that error come from VISA Read block .  


Next step was check connection by MAX. The Configuration of the device COM port as same as in Windows. In Visa test panel  I send command *IDN? and press Read? the result is on screenshort.


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For me not clear what I should change.

The setting of Keithly RS232 is same as in Windows

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Accepted by topic author q232

I find solution for this problem. 

Because drive prepare for GPIB conection, it does not take into account termination charaters.

I added before "write buffer" input a combination of command and "Line Feed Constant" (LF is selected in TERMINATOR). See screenshort.

I think it will help with other VI from this NI driver.

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