AllenBradley Compactlogix PLC Ethernet IP & C# Communication?
来源： https://stackoverflow.com/questions/48583100/allenbradley-compactlogix-plc-ethernet-ip-c-sharp-communication
SCADA
AllenBradley Compactlogix PLC Ethernet IP & C# Communication?
来源： https://stackoverflow.com/questions/48583100/allenbradley-compactlogix-plc-ethernet-ip-c-sharp-communication
Adding an OPC UA Server to .NET application [closed]
问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 2 years ago . I have a C# application that communicates with a process instrument over ethernet. I want to add an OPC UA server to my application so that any SCADA system with a built in OPC client can connect and read measurement data taken by the instrument. Does any one know of any 3rd party dll's that I can use? I'm not
How to properly write and save a new Excel file?
问题 An application (a SCADA program) has an event that trigers every day and run a script that writes an Excel file (one for each day). The file could contain multiple sheets. On Windows 7, with Office 2007 installed, I can write, but I can't save and neither quit the Excel.Application . Dim objExcel as Object Set objExcel = CreateObject("Excel.Application") objExcel.WorkBooks.Add 'I think I shouldn't do this, but if not it doesn't work Set sheet = objExcel.ActiveWorkBook.Worksheets.Add 'writing
How to properly write and save a new Excel file?
问题 An application (a SCADA program) has an event that trigers every day and run a script that writes an Excel file (one for each day). The file could contain multiple sheets. On Windows 7, with Office 2007 installed, I can write, but I can't save and neither quit the Excel.Application . Dim objExcel as Object Set objExcel = CreateObject("Excel.Application") objExcel.WorkBooks.Add 'I think I shouldn't do this, but if not it doesn't work Set sheet = objExcel.ActiveWorkBook.Worksheets.Add 'writing
Scada-Lts - 'No DataSource specified' error
问题 I tried to run Scada-Lts on Tomcat 7 with jdk 1.7 and i got the following error: SEVERE: Exception sending context initialized event to listener instance of class com.serotonin.mango.MangoContextListener java.lang.IllegalArgumentException: No DataSource specified at org.springframework.util.Assert.notNull(Assert.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:97) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection
Which book(s) to learn sockets programming and TCP network communication? [closed]
问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 5 years ago . I will do a few small projects over the next few months and need some books (preferably) or URLs to learn some basic concepts. In general one PC or embedded device (which varies by project) collects some user input or data from an external hardware device and transmits it to a remote PC which will enter it into
快速开发基于 HTML5 网络拓扑图应用
采用 HT 开发网络拓扑图非常容易，例如《 入门手册 》的第一个小例子麻雀虽小五脏俱全： http://www.hightopo.com/guide/guide/core/beginners/examples/example_overview.html 该例子展示了如何构建两个节点、一条连线、以及一个 Group 的组合效果。结合 《 数百个 HTML5 例子学习 HT 图形组件 – 拓扑图篇 》可以容易理解构建一个拓扑界面基本上就是操作 DataModel 数据模型，以下为构建上图界面效果的模型代码部分： // init data model hello = new ht.Node(); hello.setPosition(60, 140); hello.setName('Hello'); hello.setStyle('note', 'I love HT'); hello.setStyle('note.background', '#FFA000'); dataModel.add(hello); world = new ht.Node(); world.setPosition(260, 80); world.setName('World'); world.setStyle('note', 'HT for your imagination'); world.setStyle(
Alternative to OPC-UA
问题 Is there any decent alternative to OPC-UA as a solution for accessing process data of a system composed of various PLCs? Something that is platform independent and can "speak" with products of different brands ? I've heard of MQTT but it seems to be much more like a transport protocol, and only that. It does not have all the higher level stuff like the information modeling, etc. Thanks for your help! 回答1: OPC is the only standard way for communicating with PLCs. OPC DA is the old alternative.
Alternative to OPC-UA
Is there any decent alternative to OPC-UA as a solution for accessing process data of a system composed of various PLCs? Something that is platform independent and can "speak" with products of different brands ? I've heard of MQTT but it seems to be much more like a transport protocol, and only that. It does not have all the higher level stuff like the information modeling, etc. Thanks for your help! OPC is the only standard way for communicating with PLCs. OPC DA is the old alternative. OPC UA is the new one and recommended, nowadays. Before OPC there was just proprietary protocols and shared