We have a s7-200 cpu224 plc. It has a hardware problem. so we want to backup program to restore to other plc. but it gives “The PLC has been protected to prevent program upload.” error. i looked so many pages, but i couldn’t find a working solution.
This is board photo. if there is a solution about eeprom, also i can do that.
If someone help me about this, i will be glad.