MD021 Plastic Wire Drawing Machine User Manual 
 
Decrease the value or function 
code. 
Select the displayed 
parameters in turn when the 
inverter is in running or stop 
state, and select the digit of a 
parameter value to be 
modified. 
Press this key to run the 
inverter in the operation panel 
control mode. 
Press this key to stop the 
inverter in the running state 
and reset the inverter in the 
fault status. 
 
4.2 How to Query and Modify Function Codes 
The MD021’s operation panel adopts three-level menu, convenient for 
quick querying and modification of parameters. 
The three-level menu consists of function code group number (Level 
I),  function  code  (Level  II),  and  function  code  value  (Level  III), 
shown in Figure 4-2: 
Figure 4-2 Three-level menu operation flowchart