Compteur ET112 not communicating

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1

J’ai deux compteurs ET112, un pour le réseau, l’autre pour le solaire. Sans cause apparente l’ET112 solaire ne communique plus avec le cerbo GX et il n’est plus reconnu. J’ai tout vérifié, l’interface RS485/USB, le câble de liaison, le connecteur USB du Cerbo GX. J’ai aussi vérifié l’ET112 avec le logiciel de Carlo Gavazzi et il fonctionne normalement. Donc je ne vois plus qu’un problème d’interface entre le compteur et le Cerbo GX. J’ai noté que les deux compteurs avaient la même adresse Modbus (1) mais je ne sais pas si c’est un problème. Je changé l’adresse du ET112 solaire pour voir mais sans succès. Je suis donc complètement perdu et je ne sais plus quoi vérifier. Avez-vous des idées à me soumettre. Merci de votre aide.

I have two ET112 meters, one for the grid, the other for solar. For no apparent reason, the solar ET112 no longer communicates with the Cerbo GX and is no longer recognized. I checked everything, the RS485/USB interface, the link cable, the USB connector of the Cerbo GX. I also checked the ET112 with Carlo Gavazzi’s software and it works normally. So I only see an interface problem between the ET112 and the Cerbo GX. I noticed that both meters had the same Modbus address (1) but I don’t know if this is a problem. I changed the Modbus address of the ET112 solar to 4 but without success. So I’m completely lost and I don’t know what to further check. Do you have any ideas to submit to me. Thank you for your help.

2

When both ET112 meters have the same address, then this can’t work.
So you are right, they have to have different addresses, but I have something in mind, that the addresses shall have no gaps. Means, If the first ET112 has the address 1, the next should have the address 2. There should be no gaps. Not shure if this was correct for the Carlo Gavazzi HW, but it is worth a try.

One more try could be to change the Meters.

3

I found the cause of the problem. There were two ET112 instances created in the device list, the good one and a dummy. After i cancelled the dummy instance the communication restarted.

4

Very good. Thanks for the feedback! :wink: