https://mvnrepository.com/artifact/org.openscada.utgard/org.openscada.opc.lib/1.5.0 opc-driver.jar opc da classical for scada Todo Memory Leak RealOPCMaster->doPoll() enableReconnect after connect OPCUtils->connect(x,y,z) !QUALITY_GOOD RealOPCMaster->getValue()