Recent posts to Application-based license Modbus Channelshttps://forge.codesys.com/forge/talk/Runtime/thread/99305761f1/2025-09-04T13:45:13.031000ZRecent posts to Application-based license Modbus ChannelsApplication-based license Modbus Channels2025-09-04T13:45:13.031000Z2025-09-04T13:45:13.031000Zsandro66https://forge.codesys.com/u/sandro66/https://forge.codesys.comd1c90bc37da82da0266113c0d0106755fc3419f0<div class="markdown_content"><p>Hi Gatto,<br/>
Using version 3.5.21.xx, it is no longer possible to use Modbus function blocks (I make extensive use of these FBs.)as shown in the example.<br/>
<a href="https://content.helpme-codesys.com/en/CODESYS%20Examples/_ex_modbus_example.html" rel="nofollow">https://content.helpme-codesys.com/en/CODESYS%20Examples/_ex_modbus_example.html</a></p>
<p>The compiler detects one Modbus instance for each instance of the communication FB block. The example program above, although simple, reports 8 Modbus instances when compiled with the latest version.</p>
<p>Codesys Support says that you must use fieldbus I/O mapping, but this will result in the loss of the ability to programmatically modify communication parameters.</p>
<p>Sandro</p></div>Application-based license Modbus Channels2025-09-01T14:18:35.526000Z2025-09-01T14:18:35.526000Zgattohttps://forge.codesys.com/u/gatto/https://forge.codesys.com641f7bbd39b59390f30a068264a9c4bd6172cf9a<div class="markdown_content"><p>Hi Sandro, did you find any solution?<br/>
I'm in version 3.5.20.40 and i have only one modbus channel.<br/>
I don't want the problem to happen to me if I do an update one day.</p></div>Application-based license Modbus Channels2025-08-27T15:04:24.617000Z2025-08-27T15:04:24.617000Zsandro66https://forge.codesys.com/u/sandro66/https://forge.codesys.comd54ce3908e100516e6fcbdfc4d9a90f702d1ca66<div class="markdown_content"><p>Hi,<br/>
I imported an old project created with version 3.51.20.50 into the new version 3.51.21.20. I'm using ModbusFB.ClientTCP v4.5.0.0. Strangely, I can no longer download the project due to a licensing issue I didn't have before. The number of Modbus channels has gone from 1 to 54!, and there's no license that would work.<br/>
Can anyone tell me where I'm going wrong?</p>
<p>Thanks<br/>
Sandro</p></div>