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S7-PLCSIM - getting very very strange and unexpected behaviour

3/5/2009 5:37 PM	Rate (0)
grisley Posts: 3 Rating: (0)	Hi all, I'm quite a novice in S7 so I don't know if this is going to be too simple or too complicated. My program consists basically in an OB1 module and several FCs called from the OB1. ALL data used in the FCs are inner parameters passed from the OB1, some IN, some OUT, some TEMP. I havebooleans, ints, reals... When Isimulate it I get very very strange and unexpected behaviour, such as an SR not holding its value (even though it's not been reseted), parameters not propagated to the output... The funny thing is I have found that this behaviour in FC1 depends on some parameters passed to FC2, in particular two real numbers. For some values behaviour is different to that from other values. Given this I can only think that memory areas between FCs are not that isolated as, I thought, they should be. It's like if some bits of these real numbers where shared with the other FC. Am I doing sth wrong? Isthis a know bug? Maybe it is because I have attached the <Operand> boolof the SR to a TEMP variable (when using Mx.x the problem is solved) but I thought one could do this. Thanks a lot in advance for any comment.
grisley Posts: 3 Rating: (0)	Last edited by: CS Moderator at: 3/5/2009 11:12 PM new subject after splitting
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3/5/2009 11:14 PM	Rate (0)
CS Moderator Moderator Joined: 9/1/2005 Last visit: 8/22/2025 Posts: 4114 Rating: (195)	closed cause question posted twice. The second thread with the subject Data overlapped between FCs in PLCSIM?? is published within the same conference. Best regards CS Moderator
	My Forum is the place to personalize your profile, track your topics, and maintain content that interests you. Best regards CS Moderator
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