Experimental Physics and Industrial Control System
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If I understood his last message correctly it works OK printing values for 10 seconds, and then it fails. So it does find the PV.
Sent from my iPhone
On Sep 19, 2022, at 10:46 AM, Matt Newville via Tech-talk <tech-talk at aps.anl.gov> wrote:
Hi Le Daniel,
I would guess that the PV is actually not being found on the network. Is EPICS_CA_ADDR_LIST set so that the IOC or CA server providing that PV can be found?
Hello,
I’m using a raspberry to get epics variable value from that code :
import epics
import time
while True:
p=epics.PV(‘TL_AN_Input’)
val = p.get()
print (val)
time.sleep(0.1)
This code runs about 10 seconds and after it returns the error message :
/home/pi/.local/lib/python3.9/site-packages/epics/ca.py:1528: UserWarning: ca.get(‘TL_AN_Input…’) timed out after 1.00 seconds.
Warnings.warn(msg % (name(chid), timeout))
What does it mean ?
Is it because I need to clean the PV_cache ?
è if it is the case how can I do that ?
Thank you very much.
Cordialement,
LE DANIEL Erwann.
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ANJ, 19 Sep 2022 |
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