Experimental Physics and
Industrial Control System

Mark Rivers via Tech-talk <tech-talk at aps.anl.gov> · Thu, 9 Jun 2022 20:34:48 +0000

I am copying this to tech-talk so everyone knows the solution.

Mark

-----Original Message-----
From: Thomas Feggeler <tfeggeler at lbl.gov> 
Sent: Thursday, June 9, 2022 3:33 PM
To: Mark Rivers <rivers at cars.uchicago.edu>
Subject: Re: PyEpics: Cannot connect to DEVICE

Dear Mark,

Thank you, that did it. I asked the IT to check and now it works.

Kind wishes

Thomas

> Am 09.06.2022 um 18:49 schrieb Mark Rivers <rivers at cars.uchicago.edu>:
> 
> This could be a firewall issue.  Did you try temporarily turning off the Windows firewall?  It could be that caget has a firewall exception in place but Python does not.
> 
> Mark
> 
> 
> -----Original Message-----
> From: Tech-talk <tech-talk-bounces at aps.anl.gov> On Behalf Of Thomas Feggeler via Tech-talk
> Sent: Thursday, June 9, 2022 10:29 AM
> To: tech-talk at aps.anl.gov
> Subject: PyEpics: Cannot connect to DEVICE
> 
> Dear colleagues,
> 
> We have a new computer installation (Windows 10) with epics 7.0.4, python 3.6.4. When I try to connect with caget() directly over the command line to access a device, e.g.
> 
> Caget XXXX:XXXX:firmwarebuilddate
> 
> It immediately works.
> 
> When using pyepics over pycharm, or the python interpreter, the message „cannot connect to DEVICE“ is given out.
> 
> The Windows path variables are set, EPICS_CA_ADDR_LIST is set and imported into the pycharm environment.
> 
> In both pycharm and python console if I do the following:
> 
> import epics
> import os
> from epics import PV, caget, caput, cainfo os.environ['EPICS_CA_ADDR_LIST'] = 'XXX.XXX.XXX.XXX'
> os.environ['EPICS_CA_AUTO_ADDR_LIST'] = 'NO'
> print(caget('XXXX:XXXX:firmwarebuilddate'))
> 
> The same error occurs.
> 
> I’d kindly ask for your help.
> 
> Thank you
> 
> Kind wishes
> 
> Thomas
> 
> 
> 
> 
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> 

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System