Experimental Physics and
Industrial Control System

> Your second question is whether you can reduce the number of error messages.  The drvAsynIPPort

> driver does not print any error messages when ports disconnect and reconnect.  asynManager also

> does not print any  error messages when ports disconnect and reconnect.  Both of them simply format

> error message strings that they pass back to device support when they detect an error. Since the error

> messages are coming from device support (or some other layer above asyn),  the answer to your

> questions depends on what device support you are using.​

After you mentioned it, I checked the messages in the IOC shell. All of them seems to come from Stream Device, in fact:

********************

********************

The message that tricked me is "asynError in read. Asyn driver says: ts-b044-pp01:2107 disconnected". I attributed it to Asyn.

> There is standard asyn device support that comes with asyn.  In asyn R4-27 I made the following change:

>    Changed error reporting if pasynManager->queueRequest returned an error. Previously error messages were 

>    printed on every call, which would cause a large number of messages if the port was disconnected and records 

>    were  periodically processing. Now an error message is only printed when the status return from pasynManager

>    queueRequest changes, so there will be single message for each record when a port disconnects and a single

>     message when it reconnects.

Ok, I see some messages that are probably from Asyn:

> Here are some questions for you:
> 
> - What version of asyn are you using?
4.31

The remaining questions were answered above.

 
 So, I think that I should redirect my questions to Stream Device. Maybe write a new e-mail to Tech Talk?

Thank you once more for the answers!

 

From: [email protected] [mailto:[email protected]] On Behalf Of Paduan Donadio, Marcio
Sent: Monday, July 17, 2017 1:39 PM
To: [email protected]
Subject: Time interval for Asyn auto reconnect
   
Hello.
 
I am using Asyn with IPPort, in auto connect mode, and set it to disconnect if no messages arrive after a timeout. What happens when the connected equipment is switched off is that Asyn waits  for the timeout and than closes the connection. After this, auto connection keep trying to connect until the equipment is switched on again. 
 
This is perfectly what I need, but the problem is the frequency that the auto connection is being done. We are receiveing a lot of reconnection messages in the IOC console and all of this are  being logged in a file.
 
Is there a way to configure this to retry a connection only after some minutes? Or even to reduce the amount of messages being sent to the IOC console?
 
Thank you,
 

Márcio Paduan Donadio

Control Systems Engineer

SLAC National Accelerator Laboratory

Advanced Instrumentation for Research Division

2575 Sand Hill Rd

Menlo Park CA 94025

Office (650) 926-5007​