Hi everyone, I recently purchased the ABB Terra AC charger with an electricity meter and RFID. The model I have is W22-T-RD-M-0, which supports Modbus TCP/IP, unlike my previous ABB charger without the meter. I’ve been trying to set up Modbus communication using the TerraConfig Android app, and while I managed to configure it, I’m encountering some issues with the ChargerSync app. After about a minute, I get a ‘Modbus Communication Lost’ error, which stops the car charging. Disconnecting and reconnecting the Modbus Master seems to temporarily fix the issue, but it’s not a sustainable solution.
I’ve reached out to ABB’s technical support in Finland, but they weren’t very helpful. I’m wondering if anyone else has experienced similar problems with the ABB Terra charger. From what I understand, Modbus slave units are typically passive, but it seems like the Terra charger is behaving differently. Maybe it requires an active connection from the Modbus Master, which isn’t how I initially set it up.
I’ve also tried using Modbus Master software to read the registers, and that works fine. The problem only arises when using the ChargerSync app. I’m considering reaching out to ABB again with more detailed information about the issue. If anyone has any insights or solutions, I’d really appreciate hearing from you!
In the meantime, I’m exploring alternative ways to monitor and control the charger. Perhaps there’s a workaround or a different app that can handle the Modbus communication more reliably. I’m also looking into whether the firmware needs an update or if there’s a specific configuration I’m missing.
This experience has made me realize how important it is to have robust communication protocols in smart devices. I’m curious to know how others have handled similar challenges with their smart home setups. Any tips, tricks, or recommendations would be invaluable!
Thanks in advance for your help and insights!