My system of 3 ph MP2 and Cerbo GX can be operated via Modbus External setpoint from our Loxone system (reg 37, 40, 41) or as true Dynamic ESS system, depending on the season and energy prices. A few questions or suggestions from my experience:
1: I suggest to modify the modbus documentation with the maximum setpoint interval of 10 sec to keep the system running in external mode. It has puzzled me quite some time before I found a post somewhere. The system kept starting and stopping all the time That is now solved.
2: It seem that if the system is in ESS mode and the modbus commands are still sent every 10 sec with setpoint 0, that the system is still listening to the modbus command.
The modbus commands should be ignored if the system runs in ess-mode so it is not in external mode. Now the system keeps starting and stopping all the time until the modbus commands with setpoint 0 from Loxone are stopped.
Any suggestions?