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Old March 1st, 2018, 05:33 PM   #1
Louisiana159
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Siemens 555 Issue

After uploading the program from a Siemens 555 processor and comparing it to the file that was saved from the last time someone was online a few weeks ago from this processor, there is 90,000+ rungs with NOP instructions at the end of the program. I know it sounds insane that the processor is creating its own rungs so I am asking if anyone has remotely ran into an issue like this.
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Old March 1st, 2018, 05:37 PM   #2
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Old March 3rd, 2018, 10:13 AM   #3
sigmadelta
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It sounds normal to me. I remember seeing NOPs after the end of the ladder logic when looking online... And TISOFT or Workshop uploads the complete ladder memory from beginning to end.
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Old March 3rd, 2018, 10:14 AM   #4
sigmadelta
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PS: I know in TISOFT, it was possible to choose the start and end of the ladder memory to upload.
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