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 Send OPC data to 2 different databases transaction groups 
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Joined: Thu May 12, 2011 1:00 pm
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Location: Northern California
Post Send OPC data to 2 different databases transaction groups
I was wondering if I use transaction groups to send about 2500 OPC tags to a local DB as well as a remote DB and they are triggered at the same time, will the MODBUS device be polled two consecutive times, once for either set of transaction groups? Or will it use the last good data since they will be triggering at approximately the same time?


Tue Jun 26, 2012 4:22 pm
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Joined: Mon Oct 27, 2008 4:10 pm
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Location: Folsom, CA
Post Re: Send OPC data to 2 different databases transaction groups  Topic is solved
The drivers don't double poll tags with the same address; when a tag is subscribed more than once the driver will aggregate and use the lowest rate of the group.

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Kevin Herron
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Inductive Automation


Tue Jun 26, 2012 8:44 pm
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Joined: Thu May 12, 2011 1:00 pm
Posts: 76
Location: Northern California
Post Re: Send OPC data to 2 different databases transaction groups
Perfect, hadn't seen the OPC Data mode in the Scan Class Editor yet. Got it now.
Thanks Kevin.


Wed Jun 27, 2012 10:35 am
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