blocks|key|1056910|text|您可以在这里从GitHub下载libplctag+C类库，该类库可以帮助在AB中读取/写入标记值的连接和通信：https://github.com/libplctag/libplctag，您可以从这里看到一些youtube示例。Mesta有一篇很好的文章，介绍如何用包含的视频编译库，您可以在这里查看https://www.mesta-automation.com/how-to-communicate-to-an-allen-bradley-plc-with-c-and-libplctag-ethernet-ip-library/，您不需要RSLinx就可以使用此方法与控制器通信。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1056911|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/libplctag/libplctag|1|https://www.mesta-automation.com/how-to-communicate-to-an-allen-bradley-plc-with-c-and-libplctag-ethernet-ip-library/^0|1J|12|0|46|39|1|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]|$A|R|B|S|1|T]]|C|$]]|$1|D|3|-4|5|6|7|U|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]|L|$5|G|H|I|C|$J|M]]]]

You can download libplctag C class libraries from GitHub here that assist in connection and communication for reading/writing tag values within an AB PLC: <a href="https://github.com/libplctag/libplctag" rel="nofollow noreferrer">https://github.com/libplctag/libplctag</a> from there, you can watch a few youtube examples.
Mesta-Automation has a decent article on how to compile the libraries with an included video you can check out here <a href="https://www.mesta-automation.com/how-to-communicate-to-an-allen-bradley-plc-with-c-and-libplctag-ethernet-ip-library/" rel="nofollow noreferrer">https://www.mesta-automation.com/how-to-communicate-to-an-allen-bradley-plc-with-c-and-libplctag-ethernet-ip-library/</a>
You don't need RSLinx to communicate with the controller with this method.

blocks|key|106733|text|首先，要与洛克威尔公司进行沟通，至少必须拥有RSLinx经典版。RS+Linx或FactoryTalk+Linx+(版本取决于您使用的FTV+)是将HMI客户端与PLC通信。要启用OPC通信，您至少必须安装RSLinx经典版，它有内置于OPC服务器中。RSLinx经典所做的是通过以太网/IP(或其他通信协议)连接到可编程控制器(+PLC+)，并将数据桥接为OPC服务器，这可以从OPC客户端获得。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|106734|要设置通信，必须配置DDE/OPC主题并将其指向PLC控制器。这个主题有一个名字，这将是很重要的沟通。我很久以前就这样做了，但据我所知，您在C#上安装了OPC客户端。重要:有一个已定义的结构来获取数据。知识库上的Rockwell有用于VBA和Excel的示例，可能还有用于.Net的示例。|106735|长话短说，要实现与C#的通信和获取C#应用程序的数据，必须在系统上安装RSLinx类，设置DDE/OPC主题，C#应用程序必须从RSLinx启动到OPC的客户端连接，然后设置读取或写入标记数据的方法。|106736|如果您有一个TechConnect有效用户，您可以搜索ID+QA769以到达论坛主题：RSLinx经典:使用DDE监视Excel中的数据。但是，这并不适合C#，但是，您可以在C#中获得更好的图片来制作相同的图片。|offset|length|106737|必须指出的是：|106738|如果您只想为了教育目的而读和写标记，这是理解如何编写OPC客户端程序的好方法。|ordered-list-item|106739|如果此应用程序是客户的解决方案，那么您可能不需要重新发明轮子。市场上有几个连接网关，例如Kepware和OAS，它们与您需要的数据进行通信并发送到您需要的目的地(例如SQL数据库)。|106740|取决于哪些数据和时间关键程度，它不使用OPC、DA或DDE主题。延迟写作和阅读是荒谬的。您必须将OPC+UA协议或任何CIP网络通信驱动程序转发给Rockwell+PLC。美洲国家组织和Kepware拥有CIP网络驱动程序与Rockwell+PLC连接。|106741|如果您想要使用OPC，则必须使用FactoryTalk+Linx。|106742|有一些教程可以在C#+(这个OPC-UA+-+C#+.Net+)，甚至在NodeJS+(例如这个OPC+NodeJS+)中创建一个OPC客户机。|106743|我希望我能帮你。如果你需要更多的信息或有更多的问题，请告诉我。祝好运。|106744|entityMap|0|LINK|mutability|MUTABLE|url|https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/42787/loc/en_US|1|http://opcfoundation.github.io/UA-.NETStandard/|2|https://node-opcua.github.io/^0|0|0|0|17|P|0|0|0|0|0|0|0|E|G|1|1C|A|2|0|0^^$0|@$1|2|3|4|5|6|7|1A|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1B|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|1C|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|1D|8|@]|9|@$H|1E|I|1F|1|1G]]|A|$]]|$1|J|3|K|5|6|7|1H|8|@]|9|@]|A|$]]|$1|L|3|M|5|N|7|1I|8|@]|9|@]|A|$]]|$1|O|3|P|5|N|7|1J|8|@]|9|@]|A|$]]|$1|Q|3|R|5|N|7|1K|8|@]|9|@]|A|$]]|$1|S|3|T|5|N|7|1L|8|@]|9|@]|A|$]]|$1|U|3|V|5|N|7|1M|8|@]|9|@$H|1N|I|1O|1|1P]|$H|1Q|I|1R|1|1S]]|A|$]]|$1|W|3|X|5|6|7|1T|8|@]|9|@]|A|$]]|$1|Y|3|-4|5|6|7|1U|8|@]|9|@]|A|$]]]|Z|$10|$5|11|12|13|A|$14|15]]|16|$5|11|12|13|A|$14|17]]|18|$5|11|12|13|A|$14|19]]]]

First of all, to communicate with any Rockwell PLC, it's mandatory to have at least the RSLinx Classic. The RS Linx Enterprise or the FactoryTalk Linx Enterprise (the version depends on which FTV you are using), is to communicate the HMI Client to the PLC.
To enable the OPC communication you must have at least the RSLinx Classic installed, it has a built in OPC DA server. What the RSLinx Classic does is in rough words connect to the PLC over Ethernet/IP (or other communication protocol) and bridge the data as OPC server, which can be reached from OPC Clients.
To setup the communication you must configure a DDE/OPC Topic and point it to the PLC controller. This topic has a name, and this will be important to communicate.
I’ve done this long time ago, but as far as I remember, you setup a OPC client on C#. Important: there is a defined structure to fetch the data. Rockwell on the Knowledge Base has examples of it for VBA and Excel, and probably for .Net.
Long story short, to achieve the communication to the PLC and get data to your C# application, you must install the RSLinx Classis on your system, Setup a DDE/OPC Topic, your C# application must start a client connection to the OPC Server from RSLinx, then you set the methods to read or write the tag data.
If you have a TechConnect valid user, you can search for the ID QA769 to reach the forum topic: <a href="https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/42787/loc/en_US" rel="nofollow noreferrer">RSLinx Classic: Monitor Data in Excel using DDE</a>. This is not for C#, however, you can have a better picture to make the same in C#.
Somethings must be pointed out:
<ol>
<li>If you only want to read and write tags for education purposes, this is a nice way to comprehend how to program a OPC client.</li>
<li>If this application is a solution to the customer, probably you do not need to reinvent the wheel. There are several connection gateways on the market, such as Kepware and OAS which does the communication to the data you need and send to the destination you need (e.g. SQL database).</li>
<li>Depending of which data and how time-critical it is do not use OPC DA or DDE topics. The delay to write and read are ridiculous. You must forward to use OPC UA protocol or any CIP Net communication driver to the Rockwell PLC. OAS and Kepware has CIP net drivers to connect with Rockwell PLCs.</li>
<li>If you want to go for the OPC UA, you must you the FactoryTalk Linx.</li>
<li>There are some tutorials to create a OPC UA client in C# such this one <a href="http://opcfoundation.github.io/UA-.NETStandard/" rel="nofollow noreferrer">OPC-UA - C# .Net</a>, even in NodeJS such as this one <a href="https://node-opcua.github.io/" rel="nofollow noreferrer">OPC-UA – NodeJS</a></li>
</ol>
I hope I could help you. If you need more information or have more questions let me know.
Good Luck.

I am new to PLC Programming and I do not know the basic of it.
My task is to write a code in C# that sends and receive tags from/to their communication server OPC server) RSLINX which will be connected to the client's PLC. I have found the OPC CLient code in the C# but I can't find how should I connect it to the OPC server and is there any testing simulation available that could give me the testing data that I would be receiving from client's PLC. I can give you a reference of what the client is demanding. This is what the client said in the email.
We currently do not have a copy of RSLinx installed in our system onsite. The communications between our PLC and HMI is inherently built into the devices and configured using RSLinx Enterprise which is installed on our programming laptop. We also use RSLinx on our laptop when we want to access the PLC or HMI using the respective programming software.
For your system to reach into our PLC data table, the RSLinx Gateway software will need to be installed and configured on your computer which is running your software and that needs to access our PLC. 
I hope this makes sense.

PLC Programming with C# in Rockwell-automation using RSLINX(OPC server) - how should I connect it to the OPC server?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我对PLC编程很陌生，我不知道它的基本原理。我的任务是在C#中编写一个代码，它从/向他们的通信服务器OPC服务器发送和接收标签，RSLINX将连接到客户端的PLC。我已经在CLient中找到了OPC的C#代码，但我无法找到如何将它连接到OPC服务器，是否有任何测试模拟可以提供我将从客户端的PLC接收到的测试数据。我可以...

问用C#编程实现罗克韦尔自动化-使用RSLINX(OPC服务器)-我该如何将它连接到OPC服务器？
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