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 Post subject: EthernetIP will only work with system tags
PostPosted: Wed Dec 03, 2014 12:34 pm 

Joined: Thu Nov 14, 2013 12:14 pm
Posts: 14

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I have an application in which I have multiple possible SCADA connections for the customer so I set up a number of tags with connections to multiple controllers. It seems though when I connect a CompactLogix for testing I can only get it to read a tag if that tag is a system tag (ie UsedStoragePercent) and has no connections to other controllers.

Any ideas?


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 Post subject: Re: EthernetIP will only work with system tags
PostPosted: Tue Mar 17, 2015 10:22 am 

Joined: Mon Jun 11, 2012 2:10 pm
Posts: 98

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Have you tried the data direction control? I've successfully used this in the past to transfer tags between PLCs (note: the tags are automatically made "always active") although found it taxing on the system performance since the drivers are essentially memory inefficient (each driver uses its own memory for each tag which requires a higher-level driver to individually copy tags from one driver to another).

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Adam M.
Controls Engineer
FlexEnergy


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