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how to interrupt while running SFC.

10/3/2009 3:28 AM	Rate (0)
Delphoe Posts: 120 Rating: (1)	Hi, Pro I'm working with Batch in PCS7. I'm using SFC in order to control the process. However, I still do not figure out how to interrupt the SFC sequence when there are certain incidents. For example: if in the first sequence I execute a process with 5 motors, start them sequentially, but, if I want to stop all the step of the 1th sequence ( while it does not run through all the step) in order to start a 2th sequence with a signal I can create by myself( for ex: rising edge of a bit). I try but it's only run the 2th sequence when the first one finishes. Please, help mes. Thanks a lots. Kind Regards.
Delphoe Posts: 120 Rating: (1)
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10/5/2009 9:20 AM	Rate (0)
zerepegro Posts: 183 Rating: (8)	In one SFC you can have more than one sequencer but only one can be activated at once. So if i understood well you could configure an event that start the second sequencer. This will stop the first one if the second have more priority.
zerepegro Posts: 183 Rating: (8)
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10/5/2009 11:47 AM	Rate (0)
Delphoe Posts: 120 Rating: (1)	Hi, zerepegro Can you tell me more about the priority of SFC sequence. Thanks a lots Nice days.
Delphoe Posts: 120 Rating: (1)
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10/5/2009 1:19 PM	Rate (0)
zerepegro Posts: 183 Rating: (8)	Hi Delphoe; Inside a SFC you can design several sequencer. By default you have only one called RUN but you can insert with right click=>Insert sequencer at end /before current sequencer. Only one sequencer can be activated at once, so if the start condition of two or more sequencers are ON then the sequencer with the highest value of priority start. If one sequencer is running and the start condition of one sequencer match (inside the same SFC+with higher priority) then the first sequencer with lower priority is aborted and the second one with higher priority starts. You can get more info in doc: SFC for Simatic S7=>Creating, configuring and managing SFC=>Configuring an SFC Chart in SFC Help
zerepegro Posts: 183 Rating: (8)
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10/6/2009 3:17 AM	Rate (0)
Delphoe Posts: 120 Rating: (1)	Hi, zerepegro Thanks a lot for your support. That's helpful. Regards.
Delphoe Posts: 120 Rating: (1)
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