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Old December 17th, 2012, 10:20 PM   #3
Tim James
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United States

Tim James is offline
 
Join Date: Mar 2012
Location: Texas
Posts: 92
You actually inadvertently mentioned what was in the back of my mind. If the HMI, also communicating over ethernet/IP, can read/write to the controller's tag, why can't another controller? Within RS Factory Talk View, I can pull in the project's offline tag list so I can setup these read/writes. What I am looking for is a way to do the same thing but between two controllers rather than between an HMI and a controller.

Basically, if I go the produce/consumer route, I end up having to do a lot of data file copying, producing, consuming, comparing, overwriting changes, and then re-producing and re-consuming. Either controller can change the data file and both must reflect the changes. And since messaging can't handle user defined data types it is not a very convenient solution either.
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