下载LNS DDE Server 2.1演示版-专业自动化论坛-中国工控网论坛

下载LNS DDE Server 2.1演示版点击：4836 | 回复：37

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发表于：2003-06-01 08:48:00

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提供 LNS DDE Server 2.1演示版演示方式： 1小时 LNS Server shutdown ，须启动重新LNS DDE Server运行.或者连续运行30天。 Intouch 7.1（请和Wanderware北京代表处或者代理商北京汉锦电子公司联系） Intouch 7.1和LNS DDE Server 2.1 将Lonworks控制网络运行于 TCP/IP 上性能稳定，可靠，速度快，能满足大型系统的要求。需要看演示的朋友，可以和我联系。 lonworks@gongkong.com vaton@gongkong.com

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xinqinlong

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发表于：2003-02-08 09:41:00

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我公司正在考虑使用LonWorks，所以很希望能得到你的演示. 多谢 xinqinlong@sina.com

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SYDQ

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发表于：2003-02-09 12:49:00

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衣老师：你好。我们正在进行lonworks列车监控网络的试验工作，特别希望得到您的演示和帮助。谢谢！ sysgxw@sina.com

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pengkx

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发表于：2003-02-09 13:27:00

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我想要 pengkexue@sina.com

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吴子

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发表于：2003-02-12 21:58:00

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请问如何在LNS DDE 中实现显示消息的监控？本人试用时只能监控网络变量。

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KEEP

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发表于：2003-02-13 09:00:00

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That is very easy to do ! If you have a network called "myNetwork1" which have a subSystem called "Subsystem 1" which is what LonMaker (LMW) will produce for you by default. In this subSystem you could have a device called e.g. "Device 1". The device could have a NodeBuilder 3 neuron C application that look like this: msg_tag tag_out; ... ... ... void generic_send_msg(int code, int data[], int length) { int i; // Send a message to the tag_out msg_out.tag = tag_out; msg_out.code = code; for (i=0; i < length; i++) msg_out.data[i] = data[i]; msg_send(); } when (msg_arrives) { int code; int data[1]; code = msg_in.code; data[0] = msg_in.data[0]; switch (code) { case 11: data[0] = data[0] + 5; // Add 1 to received msg data element 1 generic_send_msg(code, data, 1); break; case 12: data[0] = data[0] + 6; // Add 2 to received msg data element 1 generic_send_msg(code, data, 1); break; default: // For all other msg codes do nothing! break; } } a) Create and deploy above NB3 device b) Create a dynamic msg point on e.g. you network interface device virtual function block and bind Device 1 msg_out to it. This is important as otherwise the device will not propagate the outbound messages to the network! Now, lets say you have a excel spreadsheet in which you wand to monitor what messages are being send and received from and to the device. 1) Create a new Excel spreadsheet 2) Enter <=LNSDDE|myNetwork1.Subsystem 1.MT!Device 1.msg_in> in cell "A1" (without the <>) 3) Enter <=LNSDDE|myNetwork1.Subsystem 1.MT!Device 1.msg_out> in cell "A2" (without the <>) 4) create a button and e.g. called the default "CommandButton1" and define the following VB program for the button using VB for applications: Private Sub CommandButton1_Click() Dim chan As Long // Initiate DDE on topic chan = DDEInitiate("LNSDDE", "myNetwork1.Subsystem 1.MT") DDEPoke chan, "Device 1.msg_out", Range("A3") DDETerminate (chan) End Sub 5) Enter "11" in cell "A3" and hit the button "CommandButton1" and you should see the value "11.00...." which is the value send to the device written written in cell "A2" and the msg returned by the NC application in cell "A1" which should be "11,5" (code = 11, data[0] = 5) 6) Enter "12" in cell "A3" and hit the button "CommandButton1" and you should see the value "12.00...." which is the value send to the device written in cell "A2" and the msg returned by the NC application in cell "A1" which should be "12,6" (code = 12, data[0] = 6) 7) If you enter "13" in cell "A3" and hit the button "CommandButton1" then you should not see any update of cell "A1" and "A2"

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liudingqiu