Thursday, January 31, 2008

[oopic] Re: SCPI commands

--- In oopic@yahoogroups.com, "s.k.f." <scottandjoey@...> wrote:
>
> Has anyone tried using the SCPI on an OOPic device. I have my
hardware
> set up to send and receive but am unsure about the formating of the
> data stream. The default it 9600,n,8,1 but the commands are listed as
> an ascII string something like CONFigure:VOLTage:DC 0.5 <CR><LF>.
(The
> Caps are what is supposed to be sent). This is from a VB example.
>
> As the meter is out of town I cannot check any code till I get it
back
> but would it be as simple as sending out the
> string "CONF:VOLT:DC0.5"&H0D&H0A
>

Sure, the OOPic can send the string but with somewhat different
syntax. Probably something like:

Dim s as new oSerialPort

sub main()

s.baud = cv9600
s.operate = cvOn
s.value = "CONF:VOLT:DC0.5"
s.value = 13
s.value = 10

end sub

You might be able to concatenate the CR and LF to the first string but
I haven't tried it in a while.

Where you may have a problem is the fact that the oSerialPort only has
a 4 byte buffer. It is possible the instrument will send the data
faster than the OOPic can process it.

Richard


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