05.08.2021, 14:46
Good day,
we have three ABB (B21) and a Clivet Sphera evo heat pump and elfo fresh devices all integrated with modbus RTU.
We keep getting a timeout error from one of the three B21 and some rare errors from the others so we phisically unplugged it, as expected the wiser says that there is a timeout error with the device that is not plugged but everything else seems to work fine until we remove the profile of the missing B21, suddenly another one went red and we had to recreate the profile previously deleted and delete and recreate the profile of the other one that started to make errors.
Any ideas? Everything seems wired well, we tried also by inserting terminator resistors and RC termination but nothing helped.
Could it be a problem with the ABB devices?
Thank you for your help!
we have three ABB (B21) and a Clivet Sphera evo heat pump and elfo fresh devices all integrated with modbus RTU.
We keep getting a timeout error from one of the three B21 and some rare errors from the others so we phisically unplugged it, as expected the wiser says that there is a timeout error with the device that is not plugged but everything else seems to work fine until we remove the profile of the missing B21, suddenly another one went red and we had to recreate the profile previously deleted and delete and recreate the profile of the other one that started to make errors.
Any ideas? Everything seems wired well, we tried also by inserting terminator resistors and RC termination but nothing helped.
Could it be a problem with the ABB devices?
Thank you for your help!