RE: Fast stream-device IOC suddenly disconnects

[Abdalla Ahmad via Tech-talk <tech-talk@aps.anl.gov>]

Hello Dirk

 

I have attached the protocol files as well as two databases, the IOC first reads the raw data and then process a group of PVs sequentially as seen by the chain of forward-links. When the issue happens, the first PV in the chain “:Raw$(CH)” is frozen.

 

Best Regards,

Abdalla Al-Dalleh

Control Engineer

SESAME

 

From: Zimoch, Dirk <dirk.zimoch@psi.ch>
Sent: Sunday, September 28, 2025 2:38 PM
To: Abdalla Ahmad <Abdalla.Ahmad@sesame.org.jo>
Cc: tech-talk@aps.anl.gov
Subject: Re: Fast stream-device IOC suddenly disconnects

 

Hello Abdalla

 

Please provide records and protocol file. Can you reproduce this with a simulated device that you can provide as well?

Dirk

Am 28.09.2025 um 13:08 schrieb Abdalla Ahmad via Tech-talk <tech-talk@aps.anl.gov>:



Hi

 

We have a device streaming data at 200 Hz controlled with stream device, parses the streamed data and writes to corresponding PVs. The problem is that every day or two, the readings freeze. At first I had to restart the IOC but I noticed that the IOC does not show any error so I re-connect the asyn port through writing 0 to the CNCT field and it worked. The st.cmd file has the port configured:

 

drvAsynIPPortConfigure(“PORT”, “ip-address:port-number”, 0, 0, 0)

 

What could be the issue here? I am using EPICS base 7.0.9 and latest version of all modules.

 

Best Regards,

Abdalla Al-Dalleh

Control Engineer

SESAME

 

Attachment: controller.db
Description: controller.db

Attachment: vibration.proto
Description: vibration.proto