Experimental Physics and
Industrial Control System

Hi Pilkyu,

Can you tell the vendor and type of your device?

If it is a common product, there's a good chance that a tested protocol and sample database already exist.

Otherwise, you will have to get rid of the unwanted characters in the 'in' part of your protocol, until only the number you're interested in gets extracted and pushed to the record.

Cheers,

~Ralph

On Fri, Dec 2, 2016 at 9:33 AM, 정필규 <[email protected]> wrote:

Hi all,

I'm Pilkyu Jung who is working with EPICS in Korea.

When I receive data from device on IOC, I have a problem. Normally device sends data like this "current 3.2 A", "0.1 V" etc. at least I was knowing like that.

but, these days I got a new device which is vacuum ion pump. IOC connected with the device perfectly. However, that device sent data like this.

------------------------------------------------------------------------------------------

2016/12/02 17:09:18.992 169.254.90.249:10001 read 19

\377\372,j`\377\36005 OK 00 6.4

2016/12/02 17:09:19.012 169.254.90.249:10001 read 14

E-10 TORR B1\r\000

2016/12/02 17:09:19.012361 P1 dbPut: 10MeV:TM:ST_x_Pressure_R1(10MeV:TM:ST_x_Pressure_R1.VAL, DBF_STRING, "��,j`��05 OK 00 6.4E-10 TORR B1") failed

------------------------------------------------------------------------------------------

So, I can't get only real data(6.5E-10). It makes me can't capture data in PV. Then when I express data by caget, it just express 0, like this.

------------------------------------------------------------------------------------------

localhost.localdomain[15]# caget 10MeV:TM:ST_x_Pressure_R1

10MeV:TM:ST_x_Pressure_R1      0

------------------------------------------------------------------------------------------

 If I wanna capture only real data(6.4E-10) how can I do? Here is my .db and .proto files.

------------------------------------------------------------------------------------------

record( ai, "$(P)$(R)ST_x_Pressure_R1"){

field( DESC, "Pressure read")

field( DTYP, "stream")

field( INP, "@devvacuum.proto getPRS $(PORT1) $(A)")

field( EGU, "Torr")

field( SCAN, "2 second")

}

------------------------------------------------------------------------------------------

getPRS{

out "~ 05 0b 01 00 ";

in "%e TORR";

}

------------------------------------------------------------------------------------------

Best Regards,

PilkyuJung

Tel.+82-10-9067-3109