P120 of G120 cannot be set to 20

P1300 parameter can be modified in C(1), T state, ie P10=1, or T: Ready to run pulse is not enabled and state "C(1)" is inactive. .
After setting P1300=20, P1900 is automatically set to 2. After quick commissioning, the inverter will display alarm A07991, prompting to activate motor data identification and wait for start command.

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