If the bit is 0, the input terminal is positive; 
If the bit is 1, the input terminal is negative. 
0: Invalid   
1: In operation   
2: Forward rotation operation   
3: Reverse rotation operation   
4: Jogging operation   
5: The inverter fault   
6: Frequency degree test FDT1 
7: Frequency degree test FDT2 
8: Frequency arrival 
9: Zero speed running 
10: Upper limit frequency arrival   
11: Lower limit frequency arrival   
12: Ready for operation   
13: Pre-magnetizing   
14: Overload pre-warning   
15: Underload pre-warning 
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   
21: Reserved 
22: Running time arrival