Experimental Physics and
Industrial Control System

Walter Werner <[email protected]> · Fri, 12 Dec 2014 17:28:12 +0100

hi all,

I use pyepics for my client and want to avoid the "Virtual circuit
disconnect" exception from CA beeing printed on the standard input.
CA.Client.Exception...............................................
    Warning: "Virtual circuit disconnect"
    Context: "localhost:20000"
    Source File: ../cac.cpp line 1215
    Current Time: Wed Dec 10 2014 05:51:45.821307011
..................................................................
This exception accrues if the server is down. With this small script i
wanted to catch the exception:

import epics
import time

t = epics.PV('chicane:q1:temp')

while True:
    try:
        if t.connected: print t.value
        time.sleep(1)
    except Exception as e:
        print 'exception caught'

But it seems for me thet it is a low level issue. Any help appreciated.

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System