write to plc

[aakash]

hi i am new to mitsubishi plc q series. I have to download previously saved program to plc there already exists program in my plc but have to be changed .I have to delete the previous program to download the new program to plc and how to download the program .Help me out heere

[Crossbow]

You don't have to delete anything.  Switch the software online and select to write the program to the PLC.