3/13/2022 6:13 PM | |
Joined: 1/17/2022 Last visit: 9/4/2023 Posts: 27 Rating: (0) |
good greeting I hope you are in good health I have a problem creating an FB when I choose state from the table, define the variable, choose the data type, struct, and give the storage command, the log appears (A STRUCT without components is illegal) What letter is similar to U in English? Thank you very much for helping me ------------------------------------------------------------------------------------------ |
Last edited by: @NIAL at: 03/13/2022 18:26:25Last edited by: Jen_Moderator at: 03/14/2022 07:20:11New subject after splitting |
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3/13/2022 6:35 PM | |
Joined: 9/27/2006 Last visit: 10/17/2024 Posts: 12289 Rating: (2687)
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hello anial; This thread was originally for S7-300 CPUs, is it still the case for your problem? The error message states that you have not created internal variables inside yout STRUCT variable declaration. The examples attached below show how a STRUCT variable is expecting sub-variables to define the working structure of the variable. The first example uses STL, but the principle applies in whatever programming language you are using. The screenshots were taken for the Programming with Step 7 v5.5 manual. https://support.industry.siemens.com/cs/ww/en/view/45531107 Hope this helps, Daniel Chartier |
Last edited by: dchartier at: 03/13/2022 18:36:50 |
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3/14/2022 7:56 PM | |
Joined: 3/30/2020 Last visit: 10/19/2024 Posts: 4884 Rating: (996) |
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