Unable to successfully run dummy.py example

paulscherrerinstitute / pcaspy

Portable Channel Access Server in Python

BSD 3-Clause "New" or "Revised" License

32 stars 24 forks source link

Unable to successfully run dummy.py example #51

Closed gohierf closed 6 years ago

gohierf commented 6 years ago

Hello,

I just installed pcaspy in a virtual environment using pip install pcaspy.

The installation went fine, yet when I try to test the module using dummy.py I can't access to the PV: python dummy.py does not seem to have any trouble, yet camonitor MTEST:RAND returns MTEST:RAND *** Not connected (PV not found).

My environment variables are : EPICS_BASE=/opt/epics/bases/base-3.15.4 EPICS_HOST_ARCH=centos7-x86_64

Do you have any suggestion on what I could investigate to work out what's wrong ?

Thanks

xiaoqiangwang commented 6 years ago

Might be you have special environment variables to specify the CA hosts? Check the output of $ printenv | grep EPICS_CA

gohierf commented 6 years ago

Thanks for the tip. I actually managed to make it work on my PC, by adding

export EPICS_CA_AUTO_ADDR_LIST=NO
export EPICS_CA_ADDR_LIST=127.0.0.1
# or export EPICS_CA_ADDR_LIST = <my_ip>

However I could still not access the PV from another computer. Eventually I had to deactivate my firewall, and then I do not need to set these EPICS_CA variables to have access to the PV from my computer or another. Hence the issue is from my firewall configuration not from your module. Thanks again, great module.