Experimental Physics and
Industrial Control System

Walter Werner <[email protected]> · Tue, 16 Dec 2014 16:14:28 +0100

hi

In fact the PV class reconnects by default, i tested it just to be
sure, you both are right. In the past i had this issue that my pvs did
not reconnect, but i can not reconstruct it anymore. Maybe an older
version of base or pcaspy. Thanks, i appreciate your help.

Walter

2014-12-16 3:50 GMT+01:00 Matt Newville <[email protected]>:
> Hi Walter,
>
> Sorry for the delay in responding, and thanks Andrew.    To be clear, a
> pyepics.PV *does* automatically create a simple connection callback,  and
> PVs should definitely re-connect on re-boot of an IOC (they do for me!).
>
> As Andrew suggests, using epics.ca.replace_printf_handler() is probably what
> you want for redirecting or suppressing the messages sent from the CA
> library.  For example,
>
>     import epics
>     def handle_messages(text):
>         print(" Saw CA Message: %s\n" % text)
>
>     epics.ca.replace_printf_handler(handle_messages)
>
> By default, such messages are sent to STDERR.   As an alternative, you could
> redirect all messages to STDERR, by replacing sys.stderr.write with your own
> function.  That wouldn't be CA-specifc, of course.
>
> Hope that helps,
>
> --Matt
>
>
>
>

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System