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Subject: Re: Question about epics/Labview and Ca Lab -- how to put time to my PV from signal waveform chart in labview.
From: Carsten Winkler <carsten.winkler@helmholtz-berlin.de>
To: <tech-talk@aps.anl.gov>
Date: Wed, 27 Sep 2017 12:07:49 +0200

Hello Zhefu,


your EPICS PV "caLab:waveDouble" already has a "native" EPICS time stamp. It will be automatically generated. You can see it when you set up a camonitor session. If this time stamp is unacceptable then you can write any time stamp to a second EPICS PV at same time (CA Lab can take a array of PV names to write to; see examples at homepage). But remember it won't be a consistent data set because of delay difference of data transmissions.


Best regards
Carsten


Example solution:


Am 26.09.2017 um 15:27 schrieb lzf neu:

hi,


I want to put the signal waveform chart versus time to my PV from labview, and camonitor the PV in epics terminal.


I install Calab software to do this. As can be seen from the test.vi file in the attatchment. I could put waveform values (values of Y axis of chart by using NI-Scope widget) to my epics PV ("caLab:waveDouble") by using "Ca Lab epics put " widget. 


My problem is that I have no idea how to put time (values of X axis of chart) to another PV by using

"Ca Lab epics put " widget or any other methods, so I can camonitor the PV in epics terminal.


I have attatched the labview file (test.vi) in the attatchement, any help will be appreciated and thanks in advance.


Zhefu






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References:
Question about epics/Labview and Ca Lab -- how to put time to my PV from signal waveform chart in labview. lzf neu
Question about epics/Labview and Ca Lab -- how to put time to my PV from signal waveform chart in labview. lzf neu

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