0: Invalid
1: In operation
2: Forward rotation operation
3: Reverse rotation operation
4: Jogging operation
5: The VFD fault
6: Frequency level test FDT1
7: Frequency level test FDT2
8: Frequency reached
9: Zero speed running
10: Upper limit frequency reached
11: Lower limit frequency reached
12: Ready for operation
13: Pre-magnetizing
14: Overload pre-alarm
15: Underload pre-alarm
16: Completion of simple PLC stage
17: Completion of simple PLC cycle
18: Setting count value arrival
19: Defined count value arrival
20: External fault valid