Experimental Physics and
Industrial Control System

"Balakrishnan, Namrata via Tech-talk" <tech-talk at aps.anl.gov> · Wed, 2 Sep 2020 19:02:21 +0000

Hi Han, Mark,

> Is your ioc developed by your team or CAEN? I think CAEN has their own embedded IOC. I saw your model also in their EPICS support list.

Yes, we are using the database and protocol file from CAEN EPICS support but have the IOC modified for our environment. 

> ?  If we close and open the port again, communication is reestablished.
> What do you mean by that? How did you do it?

We tried the sequence of toggling Autoconnect (.AUCT), Enable/Disable(.ENBL) and connect/Disconnect(.CNCT) on the asyn record. The communication was re-established within 30 minutes ( immediately one time). 
But as Marcio mentioned, once disconnectOnReadTimeout was tried,  we have not been able to communicate with the device again. The system is still in this condition as we were not authorized to reboot the IOC, yet. 

>Can you ping the CAEN device? Can you open a manual telnet connection to it on port 1470, which seems to be the port you are using?
We can ping the device. But telnet stays at 'connecting to the device' state. The IOC is online at this point but communication with the device is not established.

Thanks and regards,
Namrata

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System