11/24/2014 9:35 PM | |
Posts: 5225 Rating: (1189) |
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11/25/2014 2:23 AM | |
Joined: 10/7/2005 Last visit: 7/18/2024 Posts: 3009 Rating: (1053)
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Hello CSI_BC telling you that "S5 timers" behaved like that since S5 daysprobably doesn't help,but you can find the requested "official" info as followed (it is arguably hidden deep insidethe Step 7 online help). - Use <F1> onan S_ODT or S_PEXT Timerto bring up its context sensitive help(it applies for all S5 Timers but thehelp is consistently inconsistent) - Click on the "Location of a Timer in Memory and Components of a Timer" hyperlink and you'll get to the attached page. Have a look too at the "SIMATIC Timers" versus "IEC Timers" discussion which may interest you. Bottom line though (and as already advised by William B.): S5 Timers are updated by the operating system asynchronously to the program scan. To overcome this, assignthe Timer output to amemory (or DB) bitand use its status elsewhere in yourprogram. I hope this helps |
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11/10/2015 1:01 PM | |
Joined: 9/3/2014 Last visit: 3/13/2019 Posts: 4770 Rating: (123) |
New question published by bogro is split to a separate thread with the subject When S5T# type timers are updated in the cycle of CPU?. Best regards |
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