2/5/2021 9:54 AM | |
Joined: 12/20/2016 Last visit: 8/27/2024 Posts: 42 Rating: (0) |
Please any help, Thanks, |
2/6/2021 11:56 AM | |
Joined: 9/27/2006 Last visit: 9/26/2024 Posts: 12283 Rating: (2685) |
Hello Nguyen; SFC 12 is protected, yes, as all System Functions programmed and provided by Siemens. This is voluntary, so that no modifications are introduced in the function by users and to ensure that the function always works as designed. When using any System Function or System Function Block, the user must examine how to use the function parameters to integrate it in their own program. There are many sources available for this, starting with the System and Standard functions manual (S7-300 and S7-400 CPUs) , the Step 7 online help, and various articles in the Siemens Support pages (you can reach them if you use the search box at the right of this page, with an appropriate search term). For example, this FAQ shows how to activate and deactivate a Profibus slave using SFC 12, in the user program: How do you switch off (decouple) a slave without causing an error entry to appear in OB 86/122? https://support.industry.siemens.com/cs/ww/en/view/5608020 Hope this helps, Daniel Chartier |
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