I am working on ScadaBR and opc. I tried to catch quality and timestamp from my server, but the receive data are wrong. For exemple, when i set a new value to an opc tag, timestamp don’t change, and i think opc is doing a polling for each changes.
I used mapScada from opc driver jar and took the quality and ts from this map.
How can i solved it or getting timestamp and quality from my opc server ?
are you using ScadaBR for data acquisition, then found some bugs… and now trying to improve our OPC drivers?
if this is correct, please drop me an email at contato@scadabr.org.br so that we can understand better your needs, and talk about ongoing collaboration. There are now only a few people who fully understand OPC and DCOM under Java.
if you are only using the JAR files for your own custom software, maybe you should look at [google for] OpenScada and Utgard which are our main sources (we use their implementation, slightly modified, and wrapped to fit mango/ScadaBR’s datasources model). Maybe there you can find additional support, at this moment. Also keep an eye for CIENGIS Plantstreamer.