EPICS Home EPICS Controls Argonne National Laboratory

Experimental Physics and
Industrial Control System

Format page
for printing


Search Tech-talk
1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  <2018>  2019  2020  2021  2022  2023  2024  Index 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  <2018>  2019  2020  2021  2022  2023  2024 
<== Date ==> <== Thread ==>
Subject: Re: Wait for pv to connect sscan
From: "Mooney, Tim M." <[email protected]>
To: l123173 <[email protected]>, tech-talk <[email protected]>
Date: Tue, 1 May 2018 15:52:05 +0000

Hi Li,


I don't see where you're telling saveData where to write the data files.  It should tell you (xxx:saveData_message) if it thinks it has a good path name.


"Waiting for pv's to connect" is not a saveData problem.  It's the sscan record failing to connect to one or more PVs.  Every single PV (positioner, trigger, and detector) must connect before a scan can start.


Tim Mooney ([email protected]) (630)252-5417
Beamline Controls Group (www.aps.anl.gov)
Advanced Photon Source, Argonne National Lab

From: [email protected] <[email protected]> on behalf of l123173 <[email protected]>
Sent: Tuesday, May 1, 2018 10:35:11 AM
To: tech-talk
Subject: Wait for pv to connect sscan
 
Hi Mark and all,
     I used sscan-2-10-1( 2D scan ), base 3.15.
     I always got "Waiting for pv's to connect" after I clicked the "scan" in scan1.
     But it work fine when I disable the saveData in st.cmd with the same setting. It could do the scan 1 and scan 2.
     So I think the error was saveData. But saveData should be easy. The error was "I/O error, can't open file" though I am root.
    
     The following was some strange message I got.
      
     When I set the parameters, I got these message in st.cmd.
*******************************
dbpf("xxx:scan1.R1PV", "xxx:m1.RBV")
DBR_STRING:          "xxx:m1.RBV"       
dbpf("xxx:scan1.P1PV", "xxx:m1.VAL")
DBR_STRING:          "xxx:m1.VAL"       
dbpf("xxx:scan1.T1PV", "xxx:m2.EXSC")
DBR_STRING:          "xxx:m2.EXSC"      
dbpf("xxx:scan2.R1PV", "xxx:m2.RBV")
DBR_STRING:          "xxx:m2.RBV"       
dbpf("xxx:scan2.P1PV", "xxx:m2.VAL")
DBR_STRING:          "xxx:m2.VAL"       
dbpf("xxx:scan2.T1PV", "XSPRESS3-EXAMPLE:HDF5:Capture")
xxx:scan2:special:connect already in progress for link T1.  Waiting...        (The sentence came out sometime, 50%)
DBR_STRING:          "XSPRESS3-EXAMPLE:HDF5:Capture"        
dbpf("xxx:scan2.T2PV", "XSPRESS3-EXAMPLE:Acquire")
DBR_STRING:          "XSPRESS3-EXAMPLE:Acquire"   
motorUtilInit('xxx:')
saveData_Init(saveData.req, 'P=xxx:')
saveData: message queue created
saveData:maxAllowedRetries = 10
saveData:retryWaitInSecs = 15
seq &scanProgress, 'S=xxx:, P=xxx:scanProgress:'
sevr=info Sequencer release 2.2.4, compiled Sun Apr 15 20:26:45 2018
sevr=info Spawning sequencer program "scanProgress", thread 0x26a0de0: "scanProgress"
# write all the PV names to a local file
dbl > dbl-all.txt
# Report  states of database CA links
#dbcar(*,1)
# print the time our boot was finished
date
2018/05/01 23:01:14.875178
asynSetTraceIOMask("L0",0,2)
asynSetTraceMask("L0",0,9)
sevr=info scanProgress[0]: all channels connected & received 1st monitor
"
    Source File: ../cac.cpp line 1298
    Current Time: Tue May 01 2018 23:01:14.903656005
..................................................................
CA.Client.Exception...............................................
    Warning: "Identical process variable names on multiple servers"
    Context: "Channel: "XSPRESS3-EXAMPLE:HDF5:Capture", Connecting to: 192.168.0.1:5064, Ignored: 192.168.1.106:5064"
    Source File: ../cac.cpp line 1298
    Current Time: Tue May 01 2018 23:01:14.902491275
..................................................................
CA.Client.Exception...............................................
    Warning: "Identical process variable names on multiple servers"
    Context: "Channel: "XSPRESS3-EXAMPLE:Acquire", Connecting to:



Then I click the stop button to stop. I saw these.
It should not be like these. I do have the permission since I am always root.
**************************************
saveData: ...will retry in 15 seconds
saveData:writeScanRecCompleted(xxx:scan1): can't open data file!!
saveData: ...will retry in 15 seconds
saveData:writeScanRecCompleted(xxx:scan1): can't open data file!!
saveData: ...will retry in 15 seconds
saveData: too many retries; abandoning data from scan 'xxx:scan1'
saveData: *******************************************


Regards,
Li xing


 

References:
Wait for pv to connect sscan l123173
Navigate by Date:
Prev: Wait for pv to connect sscan l123173
Next: NDPluginFile attribute saving Steve Kinder - UKRI STFC
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  <2018>  2019  2020  2021  2022  2023  2024 
Navigate by Thread:
Prev: Wait for pv to connect sscan l123173
Next: NDPluginFile attribute saving Steve Kinder - UKRI STFC
Index: 1994  1995  1996  1997  1998  1999  2000  2001  2002  2003  2004  2005  2006  2007  2008  2009  2010  2011  2012  2013  2014  2015  2016  2017  <2018>  2019  2020  2021  2022  2023  2024 
ANJ, 01 May 2018 Valid HTML 4.01! · Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· Search · EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·