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An error in executing S7-PLCSIM?

Created by: pinpon at: 9/13/2008 4:50 AM (15 Replies)

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9/13/2008 4:50 AM	Rate (0)
pinpon Posts: 17 Rating: (3)	This little program is simulated with PLCSIM V5.4 + SP1. I found a mistake in the execution of programmes in PLCSIM, when it comes to treating ACU2. Please, review the image and comment. Attachment error in PLCSIM.JPG (928 Downloads)
pinpon Posts: 17 Rating: (3)
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9/13/2008 10:25 AM	Rate (0)
Ssc_Mikro Posts: 196 Rating: (12)	Hello Pinpon I have the same fault when I test the program on my PLC sim V5.4 sp2. I have tried the same program on a CPU and it is working as it should. It sems that the TAK instruction causing the problem (just a guess). But if anybody can’t come up with a good explanation we should send it to hotline, on Monday. Nice work...
Ssc_Mikro Posts: 196 Rating: (12)
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9/14/2008 2:24 AM	Rate (0)
pinpon Posts: 17 Rating: (3)	Hello Ssc Mikro The problem is dragged from previous versions of PLCSIM. The problem is not in the instruction TAK, but in ACU2 that takes zero instead retain the old value. Thanks for your interest
pinpon Posts: 17 Rating: (3)
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9/14/2008 8:27 PM	Rate (0)
Ssc_Mikro Posts: 196 Rating: (12)	Hi Pinpon Have you reported it to hotline ?
Ssc_Mikro Posts: 196 Rating: (12)
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9/15/2008 4:50 PM	Rate (0)
JMJ Posts: 487 Rating: (45)	Yes, I think it is important to forward this to hotline so that they will fix this problem. But I am also worried about WinAC. Can anyone who has WinAC RTX, check if this problem exist in WinAC too? I heared that WinAC and PLCSim has same engine for executing the PLC code except that WinACengine supportsmore communication functions.
JMJ Posts: 487 Rating: (45)
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9/16/2008 7:41 AM	Rate (0)
Ssc_Mikro Posts: 196 Rating: (12)	Hi Pinpon and JMJ I have reported it to the Danish Hotline, so we have to see what answer they will came up with.
Ssc_Mikro Posts: 196 Rating: (12)
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9/16/2008 2:09 PM	Rate (0)
JMJ Posts: 487 Rating: (45)	Please keep us posted about it when hear back from them
JMJ Posts: 487 Rating: (45)
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9/16/2008 10:01 PM	Rate (0)
Ssc_Mikro Posts: 196 Rating: (12)	Hi I have mailed with the Danish line, the wont accept is as fault in plcsim, the say it is wrong use of the TAK instruction, I have tried to explain to them that the ACU2 contain the vaule “0” after the +I instruction. And after we have mail to each other the whole day I may be in bad standing at the Danish hotline.
Ssc_Mikro Posts: 196 Rating: (12)
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9/16/2008 10:32 PM	Rate (0)
JMJ Posts: 487 Rating: (45)	Can anyone from Germany help here by contacting Siemens AG hotline? Or may be SS_Makro can contact Siemens AG hotline as you are still in Europe tech support area.
JMJ Posts: 487 Rating: (45)	Last edited by: JMJ at: 9/16/2008 10:35 PM
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9/17/2008 10:32 PM	Rate (1)
Ssc_Mikro Posts: 196 Rating: (12)	Hi I have been in contact with a very good friend that came up with an explanation what going on in PLC sim. Hi told me the reason is because the PLC sim works with 4 accumulators instead 2 as the 3xx series except 319 I think. It just like a HP 48s calculator so after the +I instruction the 100 should bee in AUC 3 that why we have seen this situation. I should possibly the get the value again with PUSH/ POP instruction. I know that the Plc have 4 accumulators but had never used them But think I have to get hold of a S4xx to test the program on and see if we get the same result as plc Sim. I will post more details tomorrow
Ssc_Mikro Posts: 196 Rating: (12)
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