I am using an ESS system in „mode 3“-configuration. The installation and control via Modbus TCP is principially working, but there is an open question regarding the usage of parallel configurations / several inverters on one phase.
From my point of view there are only 3 registers / values - one per phase - in the register-list to control the operating-point of the MP-II inverters. Is there a possibility to set the values independently for multiple devices on one phase or is the sum always splitted automatically?
The efficiency of the MP-II varies widely on the usage and especially in low-load situations it would be very useful to only use one inverter. In ESS (mode 1) the system does it automatically, but in ESS (mode 3) there seems to be a lack of control-registers to achieve this goal.
Has anyone an idea how to realize this functionality? Is it possible to configure the second set of inverters as a seperate ESS (with therefore own modbus-registers)? Can separate ESS exist in parallel and be controlled by the same cerbo, shunt, etc. and use the same battery system? Does it help to configure the MP-IIs to a separate 3-phase input group?