How many work modes in x3-hybrid-G4 parallel system?

There are three work modes in this parallel system:

Free mode: Only if no one inverter is set as a “Master”, all inverters are in free mode in the system.

Master mode: When one inverter is set as a “Master”, this inverter enters master mode. Master mode can be changed to free mode.

Slave mode: Once one inverter is set as a “Master”, all other inverters will enter slave mode automatically. slave mode can not be changed from other modes by LCD setting.