Download Program Ladder Diagram from PC to PLCMitsubishi

 Pls follow Step bellow
For Download Program Ladder Diagram from PC to PLCMitsubishi, Step by Step :
Step 1
Software PLC Mitsubishi, Open Software GX Developer 

Step 2 
Click Project --> Click Open Project... ( Ctrl + O) 
And Show Open Dialog 

OR 
Step 2 
Click Icon Open Project 
And Show Open Dialog 

Step 3 
If Show Open Dialog Then Select Project Name --> 
After the Porject Name has been Selected --> 
Click Open Button

Step 4
If Lader Diagram is Open Then : 
Click Online --> Click Write to PLC ... 

Step 5
Menu Write to PLC 
Click Param+Prog --> Click Execute Button 
Show Dialog Box "Execute write to PLC" --> Click Yes Button 

Step 6
Menu Write to PLC 
Waiting Write to PLC --> 
Writing... Parameter --> Writing... Program MAIN

Step 7
Menu Write to PLC 
Show Dialog Box "Completed." --> Click OK Button --> 
Click Close on Menu Write PLC
Process Write to PLC has been Finish
(source : http://program-plc.blogspot.com)