FX3S-30MR-DS problem

[saruans 1]

Currently I have problem with FX3S series Mitshubishi inverter. It have relay outputs and now relay output "tired", because thier sometime does not work well. I want to change to new PLC, but PLC program has pasword and I can not read it and upload to new PLC. The company which wrote PLC program does not available.
Maybe somebody give suggest how I could download and upload program to new PLC.

[krishna k 3]

Hi

 Without password we can't able to read program from PLC

  Password is required to take PLC backup.

Orelse we need to develop new program.