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J1939 communication between MC43s : value change with no reason

C. Drouaud 2 months ago in IQANdesign updated by Gustav Widén (System support) 2 months ago 1

Hello, 

I have a system with 2 MC43s, communicating with a J1939 communication. One of the digital parameters sent from one MC43 to the other change its value between what is sent and what is received. 

The MC43-1 is sending a false value (0) and the MC43-2 get a true value. 

How can that be possible ? How can I resolve it ?

Thanks in advance, 

It sounds as if there could be a mistake in how the application was designed, so I took the liberty of re-categorizing this as question. But it will be hard to troubleshoot without seeing the full project file. Perhaps you could reach out to your local support contact if you need a second pair of eyes on the file. 


If I would take a guess, it sounds as if you might have mapped the J1939 messages differently in the two applications.