java OPC item 添加不到 Group 中
紫气东璇 2018-03-23 02:51:02
JOpc.coInitialize();
JOpc jopc = new JOpc("localhost", "GrmOpcServer.GRMOPC", "JOPC1");
jopc.connect();
//建立一个组
OpcGroup group = new OpcGroup("宿支路", true, 500, 0.0f);
//name 属性表示opc服务器中的ItemID
OpcItem item1 = new OpcItem("宿支路.停泵液位设定", true, "");
group.addItem(item1);
jopc.addGroup(group);
jopc.registerGroup(group);
jopc.registerItem(group, item1); //这个位置出错
// synchronous reading
OpcItem itemRead = null;
for (int i = 0; i < 2; i++) {
Thread.sleep(2000);
OPC client is connected...
javafish.clients.opc.exception.UnableAddItemException: Unable to register item to group: 宿支路.停泵液位设定
at javafish.clients.opc.JOpc.registerItem(JOpc.java:273)
at javafish.clients.opc.AsynchReadAndGroupActivityExample.main(AsynchReadAndGroupActivityExample.java:56)