CODESYS - the IEC 61131-3 automation software

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PostPosted: Thu Apr 07, 2016 4:58 am 
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Joined: Tue Apr 05, 2016 3:58 pm
Posts: 13
Is this possible w/ the r-Pi?

On another plc in CodeSys v3.1, I could configure task type = External, event = on_Start. But I don't have these options for the r-pi, v3.5.

Any way to do this? Is this a difference specific to ver 3.5 of CodeSys, or the r-Pi, or both?


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PostPosted: Tue Jul 02, 2019 4:55 pm 
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Joined: Mon Feb 18, 2019 1:18 pm
Posts: 16
Hello and sorry for gravedigging,

but I was just wondering the same(ish) thing:
Is there a way in Codesys 3.5 with the 3.5.14.20 Pi Runtime to create tasks
that will only be called once during startup/shutdown of the PLC?

In my program I am opening a file in the local filesystem and
if I stop or logout the program with a file handle opened
it will raise an exception and I will have a bad time.

Therefore I was thinking that I could write a task which would
close any opened filehandles in order to shutdown gracefully.

Thanks in advance!


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PostPosted: Wed Jul 03, 2019 4:34 am 
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Joined: Thu Mar 17, 2016 1:24 pm
Posts: 187
Hey,

Task Configuration - System Events - Add Event Handler - Select event (PrepareStart, PrepareShutdown, etc.) - enter name for new (not existing!) function - add implementation.


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