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mqtt question, help pls [message #1842091]

Wed, 09 June 2021 03:11

overmas zhang

Messages: 12
Registered: June 2021

Junior Member

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

Wed, 09 June 2021 03:40

overmas zhang

Messages: 12
Registered: June 2021

Junior Member

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

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

Wed, 09 June 2021 09:49

Alois Zoitl

Messages: 1585
Registered: January 2014

Senior Member

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.

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