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Hello Everyone, Newbie on Siemens I get an issue with S7-314 connected to 2x( IM15-1 slaves). In the program when --> I write (PIW) as input of FC105 the CPU switches on STOP, and BF LED turnes to red, RUN led & SF starts blinking --> when I write ((IW) as input of FC105 the CPU switches on RUN, but the faults LED still red diagnostic buffer of the Master is avaliable in the attached file. i inserted a OB82, OB86 in the program and I have checked the physic link to the slaves ((it was working before)) Please if someone has the same issue, or know how can i resolve it Best regards Diagnose.txt