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Logo Program Help

12/8/2009 9:13 PM	Rate (0)
jonnyv Posts: 3 Rating: (0)	Hi All, I was wondering if anyone could help me out? We have two logo units in work using one input I1 and one output Q1. The output relay is no longer working so i wanted to change the program to output Q2. The problem is that someone put a password on the program. I now know that the program will be lost. The program parameters are: B01: T T= 00.50s This is used as an off delay timer. It drives a belt for the set time when input I1 is made. B02: Par LIM 000001 This is used to drive the belt every time that I1 is made and if adjusted to LIM 000002 it drives every other ime I1 is made. I can create the off delay timer put cannot find a function to create the second parameter any advise welcome.
jonnyv Posts: 3 Rating: (0)
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12/9/2009 10:14 AM	Rate (0)
Fux Posts: 661 Rating: (123)	Hi, the second parameter should come from a up/down counter. LIM = limit (threshold, to enable its output) This tells me, this LOGO! you are talking about is a 0BA3 generation or older. In later generations, the counter has two thresholds (ON, OFF). So if in an old LOGO! "LIM" was "1", you could enter "1" in "ON" and "OFF" in newer LOGO!´s. Perhaps this gets clearer if you look at the screentshots. Download the manual for your devices here. http://www.automation.siemens.com/simatic/portal/html_76/techdok_simatic/microsyst_techdoku.htm Attachment counter.zip (458 Downloads)
Fux Posts: 661 Rating: (123)
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12/9/2009 5:12 PM	Rate (0)
jonnyv Posts: 3 Rating: (0)	Thanks Fux I actually had tried the counter but hadnt put a value in for off parameter didnt realise how to get to the second line. Just used the arrows to get there . Great I can now get this working again. Thanks again for your help Fux.
jonnyv Posts: 3 Rating: (0)
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