Experimental Physics and
Industrial Control System

"Johnson, Andrew N. via Tech-talk" <[email protected]> · Sun, 1 Dec 2019 05:37:11 +0000

Hi,

How are you reading the lsi value and determining that it only has 40 characters?

Please try doing ‘caget -S RF:getString.VAL$’

If you do ‘cainfo RF:getString’ it will tell you that the VAL field is a normal DBF_STRING type, which can only transport up to 40 characters. You have to use the $ field modifier to gain access to the rest of the string, so ‘cainfo RF:getString.$’ will show the field as an array of 80 characters.

I don’t use StreamDevice myself but I’m assuming that it properly supports the lsi record. However I suspect trying to read your string at 5Hz as your SCAN field currently shows is probably not a good idea and may cause other problems.

- Andrew

-- 
Sent from my iPad

> On Nov 30, 2019, at 10:44 PM, dmnr infn via Tech-talk <[email protected]> wrote:
> 
> 
> Hi all,
> I have a .db e .proto made in this way:
> 
> .db
> record(lsi, "RF:getString")
> {
>     field(DESC, "String more than 40 chars")
>     field(SIZV, "80")
>     field(INP, "@MDO.proto getString L0")
>     field(SCAN, ".2 second")
> }
> 
> .proto
> getString {
>     out "STT?";
>     in "%s";
> }
> 
> I want to get a String that is more than 40 characters, and I use a lsi record but I got always 40 chars.
> There is something wrong in my code?
> Thank you
> 

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System