8/16/2016 6:01 PM | |
Posts: 22 Rating: (0) |
Status Word: http://www.plcdev.com/siemens_s7_status_word The link for the Status Word described that:
However, the attached picture showed that the code written in OB1 seems conflict with above statement: 1, The Instruction A I 0.0 is thefirst instruction being processedbut the /FC bit is not 1; the /FC bit for the “O” instruction is 0, but it is not thefirst instruction being processed. 2.The /FC bit forthe instruction A I 0.3 is 1, but the instruction will not use the logic from the previous instruction. 3. The “O” Instruction will not set the /FC bit to 1. Can any expert explain it? |
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