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I use PLC Siemens S5 CPU 942 for controlling all the freezers in my plant. Often I have a problem where OB1 ( organization Block No 1 ) is lost in the PLC , So I transfer OB1 with my Backup to PLC by PG 740 Siemens and then the PLC can Run.
What noise can make the program lost. I hope you can understand and I will be waiting your reply.
What noise can make the program lost. I hope you can understand and I will be waiting your reply.