fix multiple writer connects

src/alarm-manager.cpp

@@ -240,10 +240,10 @@ void Alarmmanager::m_selection_changed(const QItemSelection &sel, const QItemSel
             QuWriter *w  = findChild<QuWriter *>("tag_writer");
             if(!w) {
                 w = new QuWriter(this, cu_pool, m_ctrl_factory_pool);
+                connect(w, SIGNAL(newData(CuData)), this, SLOT(m_on_tag_writer_data(CuData)));
                 w->setObjectName("tag_writer");
             }
             w->setProperty("device", dev);
-            connect(w, SIGNAL(newData(CuData)), this, SLOT(m_on_tag_writer_data(CuData)));
             w->setTarget(dev + "/tag");
             w->execute(n);
         }