0: Invalid
1: Fire mode 1
2: Fire mode 2
P21.00=0, the fire mode is invalid. The inverter
runs in normal mode and stops at fault. When
P21.00 is non-zero and the fire signal is enabled,
the fire mode will be valid. The inverter will run in
the frequency P21.01.
Fire mode 1, the inverter will keep running unless it
is damaged;
Fire mode 2, the inverter will keep running except
OUT1, OUT2, OUT3, OC1, OC2, OC3, OV1, OV2,
OV3 and SPO faults
0~1
After the inverter runs in fire mode for 5 minutes,
set the flag bit without warranty handling.