Experimental Physics and
Industrial Control System

"Leblanc, Gregory via Tech-talk" <tech-talk at aps.anl.gov> · Tue, 24 Jan 2023 17:59:36 +0000

Hi again,

Still trying to run down some more details about talking to these lovely Keysight boxes via EPICS.  I've got the stock SCPI stuff working, so next I wanted to read some resistance values.  I added this to my protocol file: 

getResistance {
    out "measure:resistance? \$1,\$2,\$3";
    in "%E";
}

And added this to my .db file:

record(longin, "$(P)$(R)GetIG")
{
    field(DESC, "Get Alphatross Ion Gauge Value")
    field(DTYP, "stream")
    field(INP,  "@devswag6.proto getResistance(10,0.1,(@5012)) $(PORT) $(A)")
}

After starting the ioc, I can do ' dbtr swag6testGetIG`, which sends the correct string, and gets a reply from the mainframe.  What I'm stuck on is handing the reply.  The box replies with:

 +9.90000000E+37\n

But the way I have things configured I get:

2023/01/24 12:49:07.000698 LAN0 swag6testGetIG: Format "%E" has data type double which is not supported by "swag6testGetIG".

It seems like that should work, based on: https://paulscherrerinstitute.github.io/StreamDevice/formats.html  
I don't know if I managed to compile StreamDevice with some missing library, or if I've done something else wrong along the way.  

Thanks for any pointers,
     Greg

--
Gregory Leblanc
Accelerator Engineer
Edwards Accelerator Lab - Ohio University
123 University Terrace
Athens, OH 45701 USA
leblanc at ohio.edu
M: (401) 52-OUAL1 or (401) 526-8251

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System