CODESYS - the IEC 61131-3 automation software

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PostPosted: Thu Mar 03, 2011 3:14 pm 
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Joined: Thu Mar 18, 2010 1:39 pm
Posts: 6
Location: USA
1. I have a question about the functions sysrestoreretains and syssaveretains. I am using these functions to save the retain data and to restore the retain using a usb port on my PLC. These functions work on my PLC. HOWEVER, they do NOT work if the file doesn't already exist at the target location. This is only a small nuisance.

Does anyone who has used these functions know if this limitation is due to my PLC or CoDeSys 2.3?

2. Related question - Once I save my retain data to my USB, I am not able to do any more reads or writes to the USB unless I remove the USB thumbdrive and re-insert the drive. Any ideas why this might be?

Thank you!


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PostPosted: Thu Mar 03, 2011 4:27 pm 
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Joined: Mon Jul 25, 2005 8:06 pm
Posts: 286
Location: Chicago,IL USA
What PLC?

_________________
Thanks,
Steve Pfeifenroth


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PostPosted: Thu Mar 03, 2011 7:57 pm 
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Joined: Thu Mar 18, 2010 1:39 pm
Posts: 6
Location: USA
Festo CECX-X-M1

Thanks.


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PostPosted: Thu Mar 10, 2011 8:18 pm 
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Joined: Thu Mar 18, 2010 1:39 pm
Posts: 6
Location: USA
It turns out that the firmware in the PLC was very old. When this PLC is returned to me, I will try updating the firmware and trying it again. Thank you for your input!


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