https://forge.codesys.com/forge/talk/Engineering/thread/fc56a72ebc/2021-03-22T20:33:32.997000ZRecent posts to Codesys Soft PLC connection to TOP OPC UA- Server2021-03-22T20:33:32.997000Z2021-03-22T20:33:32.997000Zi-campbellhttps://forge.codesys.com/u/i-campbell/https://forge.codesys.com4a81e0ef795d2b9a67583f11f28d19d2c85807aa

<div class="markdown_content"><p>Hi uemit. You seem to be muddling your clients /servers and modbus/opc ua</p> <p>So. Do you mean the TOP-Server OPC UA Client? Because the symbol configuration you have made is intended for using the PLC as an OPC UA Server. </p> <p>My feeling is.. you do not need modbus in your project at all.</p> <p>For configuring the TOP-server OPC UA Client, start at page 15 of this document. <a href="https://support.softwaretoolbox.com/app/answers/detail/a_id/2450" rel="nofollow">https://support.softwaretoolbox.com/app/answers/detail/a_id/2450</a></p> <p>For configuring codesys soft PLC as an OPC UA Server, i think you have already done this. Just delete the modbus device entirely from your project.</p></div>

2021-03-22T16:07:49.372000Z2021-03-22T16:07:49.372000Zuemithttps://forge.codesys.com/u/uemit/https://forge.codesys.come8ebae45e247016e82f6bc430eada96460398299

<div class="markdown_content"><p>So currently the green circle appears left to the Modbus_TCP_Slave. But it turns into a red tri- angle after a while. When I do a rightklick on the Slave and choose diagnosis then it works for about 2 minutes until the red tri- angle appears again.</p></div>

2021-03-22T15:07:06.115000Z2021-03-22T15:07:06.115000Zuemithttps://forge.codesys.com/u/uemit/https://forge.codesys.com1a42efe24726806108bc07ca8b3364ce8a2a01e4

<div class="markdown_content"><p>Thank you very much for the answer today. After today I know that I always have to connect the slave device to a master device. And thank<code>s a lot for the information about the Unit- ID. That was certainly important. I also found a list on wikipedia regarding the standard ports for the different protocols. You can see the link in the following. Without a master it</code>s not possible to specify the port or Unit-ID and other relevant aspects of the slave device. </p> <p><a href="https://de.wikipedia.org/wiki/Liste_der_standardisierten_Ports" rel="nofollow">https://de.wikipedia.org/wiki/Liste_der_standardisierten_Ports</a></p> <p>Greetings </p> <p>Uemit</p></div>

2021-03-22T10:42:03.614000Z2021-03-22T10:42:03.614000Zuemithttps://forge.codesys.com/u/uemit/https://forge.codesys.comf28746ee5528b9084d383cbd331531020776e405

<div class="markdown_content"><p>Thank you for your answer. I watched a video where someone was able to connect the Soft PLC to the TOP OPC UA Server without a master. I will send the link in the following. But I will try to implement your advice. Because when I don<code>t use a master I</code>m not able to give a Unit-ID to the slave device and also not an IP Adress. </p> <p><a href="https://www.youtube.com/watch?v=cOr08a8JuMY&amp;t=18s" rel="nofollow">https://www.youtube.com/watch?v=cOr08a8JuMY&amp;t=18s</a> </p></div>

2021-03-22T10:01:36.569000Z2021-03-22T10:01:36.569000Zi-campbellhttps://forge.codesys.com/u/i-campbell/https://forge.codesys.com58ac05e7902441447efa7b5974554aed8637b0ee

<div class="markdown_content"><p>Here is the list of all the status icons. <a href="https://help.codesys.com/webapp/_cds_device_tree_device_editor;product=codesys;version=3.5.16.0" rel="nofollow">https://help.codesys.com/webapp/_cds_device_tree_device_editor;product=codesys;version=3.5.16.0</a><br/> In your case I see it is an orange triangle and not a red triangle.<br/> This happens when your modbus slave (CODESYS PLC) is configured correctly, but no Modbus Master has opened a connection to your slave.<br/> To get him to the two-green-arrows-arranged-in-a-circle status, you will need to connect your master.</p> <p>TIP: The modbus spec says you should use Unit-ID 0xFF for a Modbus TCP slave. 0x00 (broadcast address) also works.</p></div>

2021-03-22T09:37:44.338000Z2021-03-22T09:37:44.338000Zuemithttps://forge.codesys.com/u/uemit/https://forge.codesys.comf69eb76e7d87ffa6c021ddf128eaafb408d3cd89

<div class="markdown_content"><p>Hello together, </p> <p>I<code>m currently working on a Project in Codesys using the integrated Soft PLC. I want to connect the Soft PLC to the TOP OPC UA- Server. The variables that I used in the Codesys program are already visible in the "Adress Space" in the UA Expert- Client that I use. And when I change the value of a variable in the UA Expert- Client then this change is also visible in the Codesys programm and vice-versa. When I click on "Log in" and then "Run" in Codesys, the "Modbus_TCP Slave Device" on the left side in Codesys is marked with a red tri- angle and not a green circle. What does this red tri- angle mean? I believe, it has to do something with the configurations of the "Modbus_TCP Slave Device". I tried to do diffenrent configurations with the Slave- Device, but the result is always the same. The red tri- angle doesn</code>t go away. In the following you will see some screen- shots. </p> <p>Greetings and thank you for your time</p> <p>Uemit</p></div>