0: No function
1: Drive ready
2: Drive running signal 1
3: Drive running signal 2
4: Frequency arriving signal
5: Frequency detection threshold 1
6: Frequency detection threshold 2
7: High limit frequency arriving
8: Low limit frequency arriving
9: Overload signal
10: Over voltage stall
11: Over current stall
12: External stopping command
13: Preset counting value arriving
14: Specified counting value arriving
15: Low voltage lockup signal
16: Overload pre-alarm
17: Drive failure signal
18: Zero speed running
19:End signal of stage of program operation
20:End signal of cycle of program operation