Eclipse Community Forums: 4DIAC - Framework for Distributed Industrial Automation and Control

Home » Eclipse Projects » 4DIAC - Framework for Distributed Industrial Automation and Control » mqtt question, help pls(mqtt question)

mqtt question, help pls [message #1842091]

Tue, 08 June 2021 23:11

Eclipse User

when i use mqtt in 4diac, if just use one subscribe or one publish, that's ok. but if i use both subscribe and publish at the same time, one of them will return INVALID_ID.

is there anything wrong for paho mqtt config?

thx a lot!
index.php/fa/40595/0/

Attachment: error.jpg
(Size: 279.45KB, Downloaded 192 times)

Re: mqtt question, help pls [message #1842094 is a reply to message #1842091]

Tue, 08 June 2021 23:40

Eclipse User

oh, how silly am I. Watch the code and understand that all FBs need use the same clientID....

Re: mqtt question, help pls [message #1842100 is a reply to message #1842094]

Wed, 09 June 2021 05:49

Eclipse User

Just wanted to write that. Unfortunately you have to give in all places the same clientedID and also the same broker address. We haven't found a better solution yet.

Re: mqtt question, help pls [message #1842102 is a reply to message #1842094]

Wed, 09 June 2021 06:22

Eclipse User

Correct, at least for all blocks which will run on the same device

Previous Topic:	how to send msg by tcp? help pls
Next Topic:	question about opc_ua -- how can i get client_0_1 and client_1_0 FBs

Goto Forum:

-=] Back to Top [=-

Current Time: Tue Jul 15 22:03:02 EDT 2025

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter